Sal's Communities Activities

Inclined floor - Floor load

Sal — Mon, 17 Aug 2020 16:31:57 GMT

Hello,

I am struggling to define floor load to the top of the roof in the structure attached. I keep getting Y range issues. Can someone please help me with that.

I even tried assigning a group to the roof and then applying floor load at the roof but then I keep getting load generation error.

Thanks

/cfs-file/__key/communityserver-discussions-components-files/5932/1738.Liberty-State-Park-_2D00_-Canopy-Rafters.std

Beam Offsets STAAD Pro

Sal — Thu, 13 Aug 2020 22:50:04 GMT

Hello,

I tried using beam offsets in one of my models pasted below. Although the model ran without any errors, I can see excessive deflections at offset locations. Can someone please explain to me what's wrong in this model.

Thanks

/cfs-file/__key/communityserver-discussions-components-files/5932/LSP-_2D00_-Canopy-Rafters.std

Moment Transfer Rigid Links

Sal — Fri, 14 Aug 2020 14:23:48 GMT

Hello,

I have created a STAAD Model in which I created some offsets to simulate how the real moments would look like. Please see the model. In the model, the rafters are on top of the edge beams. In reality, there should be no moment transfer between them as they are pinned connections but in STAAD right now, the moment is transferring. I don't know how to release moments at those locations as I have offset there. For Example - Beam 112 and 139 is one continuous beam that is on top of Beam 31 and 155. How do I release the moment at that location?

Any help would be appreciated.

Thanks

/cfs-file/__key/communityserver-discussions-components-files/5932/Liberty-State-Park-_2D00_-Canopy-Rafters.std

Torsion on Channel below Stringer Post

Sal — Tue, 30 Jul 2019 14:19:37 GMT

Hello,

I have a basic structural engineering question and would be really great if someone can help me understand this. So I have a rooftop platform with stairs. I have 2 posts below 2 stair stringers and the posts are sitting on 2 channels. My understanding was that I would have to brace the 2 channels on which the 2 posts are sitting so as to provide torsional stability. But in STAAD, the 2 channels (C4x4) are not getting any torsion even for a wind load case which looks fishy. Can someone please look at this code and let me know if I am doing anything wrong.

Thanks

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 19-Apr-19
END JOB INFORMATION
INPUT WIDTH 79
UNIT FEET KIP
JOINT COORDINATES
1 0 0 -0.000399272; 2 0 0 12.6667; 3 0 0.5 0; 4 0 0.5 12.6667;
8 0 1.5 -0.000399272; 9 0 1.5 7.1667; 10 0 1.5 12.6667;
15 1.5 1.5 -0.000399272; 16 1.5 1.5 12.6667; 24 13.775 1.5 3.3335;
30 26.05 1.5 -0.000399272; 31 26.05 1.5 12.6667; 32 27.55 0 -0.000399272;
33 27.55 0 12.6667; 34 27.55 0.5 0; 35 27.55 0.5 12.6667;
39 27.55 1.5 -0.000399272; 49 27.55 1.5 11.1667; 50 0 1.5 11.1667;
51 27.55 1.5 1.4996; 52 0 1.5 1.4996; 62 0 1.5 6.6667; 64 1.5 1.5 6.6667;
66 26.05 1.5 6.6667; 67 37.0497 -0.5 9.167; 69 37.0497 -0.5 12.667;
75 6.8 1.5 12.6667; 77 27.55 1.5 6.6667; 79 27.55 1.5 12.6667;
82 6.8 7 12.6667; 92 18.8003 1.5 12.6667; 96 18.8002 7 12.6667;
100 27.55 1.5 7.1667; 102 18.8 1.5 7.1667; 103 6.8 1.5 7.1667;
104 6.8 7 7.1667; 105 27.55 7 7.1667; 106 18.8 7 7.1667; 110 40.5493 0 9.167;
111 40.5493 0 12.667; 119 12.8003 7 12.6667; 120 18.8 7 6.6667;
121 6.8 7 6.6667; 122 27.55 7 6.6667; 123 12.8 7 6.6667; 124 6.8 6.5 7.1667;
125 27.55 6.5 7.1667; 126 18.8 6.5 7.1667; 127 23.1753 7 12.6667;
128 23.175 7 6.6667; 130 16.05 0 -0.000399272; 131 16.05 1.5 -0.000399272;
134 16.05 0 12.6666; 135 16.05 1.5 12.6667; 136 27.55 7 12.6667;
137 27.55 7 9.1667; 138 16.05 1.5 6.6667; 139 16.05 1.5 7.1667;
146 37.0497 1.88487 9.167; 147 37.0497 1.88487 12.667;
148 32.3018 4.44186 12.6668; 149 32.3018 4.44186 9.16685;
150 41.0497 -0.5 9.167; 151 41.0497 -0.5 12.667; 152 36.0497 -0.5 9.167;
153 36.0497 -0.5 12.667;
MEMBER INCIDENCES
1 3 1; 2 4 2; 3 8 3; 4 10 4; 5 9 62; 10 9 50; 17 15 3; 18 16 4; 19 8 15;
20 10 16; 35 15 131; 36 100 102; 37 31 92; 47 30 34; 48 31 35; 49 30 39;
50 31 79; 51 34 32; 52 35 33; 53 39 34; 54 79 35; 55 100 77; 61 49 100;
91 49 79; 92 35 49; 93 50 10; 94 4 50; 95 51 39; 96 34 51; 97 52 8; 98 3 52;
104 77 66; 105 77 51; 107 62 52; 108 15 64; 109 64 62; 111 30 66; 112 66 138;
113 67 146; 114 69 147; 118 103 124; 119 75 82; 120 100 125; 121 79 136;
122 137 149; 123 136 148; 125 121 123; 132 137 136; 134 102 126; 135 92 96;
148 75 16; 150 92 135; 152 102 139; 153 103 9; 154 104 82; 156 106 96;
158 120 128; 161 123 120; 165 119 123; 166 82 119; 167 96 127; 168 119 96;
169 105 122; 170 106 120; 172 104 121; 173 124 104; 174 125 105; 175 126 106;
176 124 121; 177 126 120; 179 125 122; 180 127 136; 181 128 122; 182 127 128;
183 130 131; 184 131 30; 187 135 75; 188 134 135; 189 137 105; 190 135 139;
191 138 64; 192 139 103; 193 138 131; 194 139 138; 205 147 146; 206 148 147;
207 149 146; 210 148 149; 215 146 110; 216 147 111; 217 149 147; 218 153 69;
219 69 151; 220 152 67; 221 67 150;
DEFINE MATERIAL START
ISOTROPIC STEEL
E 4.176e+006
POISSON 0.3
DENSITY 0.489024
ALPHA 6e-006
DAMP 0.03
TYPE STEEL
STRENGTH FY 5184 FU 8352 RY 1.5 RT 1.2
ISOTROPIC CONCRETE
E 453600
POISSON 0.17
DENSITY 0.150336
ALPHA 5e-006
DAMP 0.05
TYPE CONCRETE
STRENGTH FCU 576
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
108 111 132 154 156 165 169 170 172 182 189 TABLE ST C4X7
1 TO 4 51 TO 54 183 188 TABLE ST HSST6X6X0.5
MEMBER PROPERTY AMERICAN
17 18 47 48 92 94 96 98 176 177 179 TABLE ST L30308
5 10 19 20 35 TO 37 49 50 55 61 91 93 95 97 104 105 107 109 112 148 150 152 -
153 184 187 190 TO 194 TABLE ST W12X45
125 158 161 166 TO 168 180 181 TABLE ST MC4X13
113 114 118 TO 121 134 135 173 TO 175 TABLE ST HSST3X3X0.375
122 123 206 207 215 216 TABLE ST C12X25
MEMBER PROPERTY AMERICAN
205 210 217 TABLE ST L30204
218 TO 221 TABLE ST C4X4
CONSTANTS
BETA 45 MEMB 17 18 47 48 92 94 96 98 176 177 179 205 210 217
BETA 180 MEMB 122 207 215
MATERIAL STEEL ALL
SUPPORTS
1 2 32 33 130 134 150 TO 153 PINNED
120 TO 122 FIXED BUT FX FY MX MY MZ
MEMBER RELEASE
19 20 36 104 108 111 123 165 182 184 187 191 192 205 210 217 START MY MZ
35 49 50 108 109 111 112 132 150 152 TO 154 156 165 169 170 172 182 205 210 -
217 END MY MZ
122 START FX MY MZ
MEMBER TRUSS
17 18 47 48 92 94 96 98 176 177 179
SLAVE ZX MASTER 24 JOINT 15 30 64 66
LOAD 1 LOADTYPE Dead TITLE DL
SELFWEIGHT Y -1
MEMBER LOAD
*Unit Weight on Dunnage
19 35 49 104 109 112 184 191 UNI GY -0.22
*Grating Weight on Elevated Platform
156 165 170 182 UNI GY -0.048
132 154 169 172 189 UNI GY -0.024
*Grating Weight on Stairs
122 123 206 207 215 216 UNI GY -0.014
LOAD 2 LOADTYPE Roof Live TITLE LR
MEMBER LOAD
*Load on Elevated Platform Channels for 60psf live load
156 165 170 182 UNI GY -0.36
132 154 169 172 189 UNI GY -0.18
*Load on Stair for 60psf live load
122 123 206 207 215 216 UNI GY -0.175
LOAD 3 LOADTYPE Roof Live TITLE LRCONC
MEMBER LOAD
*Load on Elevated Platform Channels for 60psf live load
156 165 170 182 UNI GY -0.36
132 154 169 172 189 UNI GY -0.18
*Load on Stair for 1000lbf concentrated live load
122 CON GY -1 0.5
LOAD 4 LOADTYPE Snow TITLE SL
MEMBER LOAD
*Equipment snow load on Dunnage
19 35 49 104 109 112 184 191 UNI GY -0.07
*21 psf Balanced Snow Load on elevated platform channels
156 165 170 182 UNI GY -0.13
132 154 169 172 189 UNI GY -0.065
*21 psf Balanced Snow Load on stringer
122 123 206 207 215 216 UNI GY -0.04
LOAD 5 LOADTYPE Snow TITLE SL DRIFT
MEMBER LOAD
*Drift load on middle channels in elevated platform
170 TRAP GY -0.1665 -0.18
156 TRAP GY -0.1665 -0.02
165 182 TRAP GY -0.02 -0.18
*Drift load on corner channels in elevated platform
169 172 TRAP GY -0.08425 -0.09
154 TRAP GY -0.08425 -0.01
189 TRAP GY -0.066964 -0.08425
132 TRAP GY -0.066964 -0.01
LOAD 6 LOADTYPE Ice TITLE IL
MEMBER LOAD
*Grating load on elevated platform channels
156 165 170 182 UNI GY -0.12
132 154 169 172 189 UNI GY -0.06
*Grating load on stairs
122 123 206 207 215 216 UNI GY -0.035
*Equipment load on dunnage
19 35 49 104 109 112 184 191 UNI GY -0.05
*Misc. steel member ice loads
5 10 19 20 35 TO 37 49 50 55 61 91 93 95 97 104 105 107 109 112 148 150 152 -
153 184 187 190 TO 194 UNI GY -0.037
17 18 47 48 92 94 96 98 176 177 179 205 210 217 UNI GY -0.011
108 111 125 132 154 156 158 161 165 TO 170 172 180 TO 182 189 UNI GY -0.013
122 123 206 207 215 216 UNI GY -0.026
113 114 118 TO 121 134 135 173 TO 175 UNI GY -0.013
1 TO 4 51 TO 54 183 188 UNI GY -0.02
LOAD 7 LOADTYPE Wind TITLE WIND +X
MEMBER LOAD
19 35 49 104 109 112 184 191 UMOM GZ -0.5
19 35 49 104 109 112 184 191 UNI GX 0.1
122 123 206 207 215 216 UNI GX 0.021
1 TO 4 51 TO 54 183 188 UNI GX 0.04
113 114 118 TO 121 134 135 173 174 UNI GX 0.02
154 172 UNI GX 0.027
94 98 176 205 210 217 UNI GX 0.02
5 10 93 97 107 UNI GX 0.08
LOAD 8 LOADTYPE Wind TITLE WIND -X
MEMBER LOAD
19 35 49 104 109 112 184 191 UMOM GZ 0.5
19 35 49 104 109 112 184 191 UNI GX -0.1
122 123 206 207 215 216 UNI GX -0.021
1 TO 4 51 TO 54 183 188 UNI GX -0.04
113 114 118 TO 121 134 135 173 174 UNI GX -0.02
132 169 189 UNI GX -0.03
92 96 179 205 210 217 UNI GX -0.02
55 61 91 95 105 UNI GX -0.08
LOAD 9 LOADTYPE Wind TITLE WIND +Z
MEMBER LOAD
19 35 49 104 109 112 184 191 UNI GZ 0.4
19 35 49 184 UNI GY 0.55
104 109 112 191 UNI GY -0.55
122 207 215 UNI GZ 0.085
1 3 51 53 183 UNI GZ 0.043
113 UNI GZ 0.022
17 47 UNI GZ 0.022
19 35 49 184 UNI GZ 0.085
LOAD 10 LOADTYPE Wind TITLE WIND -Z
MEMBER LOAD
19 35 49 104 109 112 184 191 UNI GZ -0.4
104 109 112 191 UNI GY 0.55
19 35 49 184 UNI GY -0.55
123 206 216 UNI GZ -0.085
2 4 52 54 188 UNI GZ -0.043
114 119 121 135 UNI GZ -0.022
18 48 UNI GZ -0.022
20 37 50 148 150 187 UNI GZ -0.085
166 TO 168 180 UNI GZ -0.029
LOAD 11 LOADTYPE Wind on Ice TITLE WIL+X
MEMBER LOAD
122 123 206 207 215 216 UNI GX 0.009
1 TO 4 UNI GX 0.013
154 172 UNI GX 0.01
94 98 176 205 210 217 UNI GX 0.005
5 10 93 97 107 UNI GX 0.017
113 114 118 119 173 UNI GX 0.0083
LOAD 12 LOADTYPE Wind on Ice TITLE WIL-X
MEMBER LOAD
122 123 206 207 215 216 UNI GX -0.009
51 TO 54 UNI GX -0.013
113 114 120 121 174 UNI GX -0.0083
132 169 189 UNI GX -0.01
92 96 179 205 210 217 UNI GX -0.005
55 61 91 95 105 UNI GX -0.017
LOAD 13 LOADTYPE Wind on Ice TITLE WIL+Z
MEMBER LOAD
122 207 215 UNI GZ 0.022
1 TO 4 51 TO 54 183 188 UNI GZ 0.013
113 UNI GZ 0.009
17 47 UNI GZ 0.005
19 35 49 184 UNI GZ 0.018
LOAD 14 LOADTYPE Wind on Ice TITLE WIL-Z
MEMBER LOAD
123 206 216 UNI GZ -0.022
1 TO 4 51 TO 54 183 188 UNI GZ -0.013
114 119 121 135 UNI GZ -0.009
18 48 UNI GZ -0.005
20 37 50 148 150 187 UNI GZ -0.018
166 TO 168 180 UNI GZ -0.011
LOAD 15 LOADTYPE Seismic TITLE EL+X
NOTIONAL LOAD
1 X 0.28
MEMBER LOAD
19 35 49 104 109 112 184 191 UMOM GZ -0.3
LOAD 16 LOADTYPE Seismic TITLE EL-X
NOTIONAL LOAD
1 X -0.28
MEMBER LOAD
19 35 49 104 109 112 184 191 UMOM GZ 0.3
LOAD 17 LOADTYPE Seismic TITLE EL+Z
NOTIONAL LOAD
1 Z 0.28
MEMBER LOAD
19 35 49 184 UNI GY 0.1
104 109 112 191 UNI GY -0.1
LOAD 18 LOADTYPE Seismic TITLE EL-Z
NOTIONAL LOAD
1 Z -0.28
MEMBER LOAD
104 109 112 191 UNI GY 0.1
19 35 49 184 UNI GY -0.1
LOAD 19 LOADTYPE Seismic TITLE EL VERTICAL
NOTIONAL LOAD
1 Y -0.06
LOAD COMB 101 D
1 1.0
LOAD COMB 102 D+LR
1 1.0 2 1.0
LOAD COMB 103 D+LR2
1 1.0 3 1.0
LOAD COMB 104 D+S
1 1.0 4 1.0 5 1.0
LOAD COMB 105 D+0.75LR
1 1.0 2 0.75
LOAD COMB 106 D+0.75LR2
1 1.0 3 0.75
LOAD COMB 107 D+0.75S
1 1.0 4 0.75 5 0.75
LOAD COMB 108 D+WX+
1 1.0 7 1.0
LOAD COMB 109 D+WX-
1 1.0 8 1.0
LOAD COMB 110 D+WZ+
1 1.0 9 1.0
LOAD COMB 111 D+WZ-
1 1.0 10 1.0
LOAD COMB 112 D+0.7EX++EVERT
1 1.0 15 0.7 19 1.0
LOAD COMB 113 D+0.7EX-+EVERT
1 1.0 16 0.7 19 1.0
LOAD COMB 114 D+0.7EZ++EVERT
1 1.0 17 0.7 19 1.0
LOAD COMB 115 D+0.7EZ-+EVERT
1 1.0 18 0.7 19 1.0
LOAD COMB 116 D+0.75WX++0.75LR
1 1.0 7 0.75 2 0.75
LOAD COMB 117 D+0.75WX-+0.75LR
1 1.0 8 0.75 2 0.75
LOAD COMB 118 D+0.75WZ++0.75LR
1 1.0 9 0.75 2 0.75
LOAD COMB 119 D+0.75WZ-+0.75LR
1 1.0 10 0.75 2 0.75
LOAD COMB 120 D+0.75WX++0.75LR2
1 1.0 7 0.75 3 0.75
LOAD COMB 121 D+0.75WX-+0.75LR2
1 1.0 8 0.75 3 0.75
LOAD COMB 122 D+0.75WZ++0.75LR2
1 1.0 9 0.75 3 0.75
LOAD COMB 123 D+0.75WZ-+0.75LR2
1 1.0 10 0.75 3 0.75
LOAD COMB 124 D+0.525EX++0.75LR+EVERT
1 1.0 15 0.525 2 0.75 19 1.0
LOAD COMB 125 D+0.525EX-+0.75LR+EVERT
1 1.0 16 0.525 2 0.75 19 1.0
LOAD COMB 126 D+0.525EZ++0.75LR+EVERT
1 1.0 17 0.525 2 0.75 19 1.0
LOAD COMB 127 D+0.525EZ-+0.75LR+EVERT
1 1.0 18 0.525 2 0.75 19 1.0
LOAD COMB 128 D+0.525EX++0.75LR2+EVERT
1 1.0 15 0.525 3 0.75 19 1.0
LOAD COMB 129 D+0.525EX-+0.75LR2+EVERT
1 1.0 16 0.525 3 0.75 19 1.0
LOAD COMB 130 D+0.525EZ++0.75LR2+EVERT
1 1.0 17 0.525 3 0.75 19 1.0
LOAD COMB 131 D+0.525EZ-+0.75LR2+EVERT
1 1.0 18 0.525 3 0.75 19 1.0
LOAD COMB 132 D+0.75WX++0.75S
1 1.0 7 0.75 4 0.75 5 0.75
LOAD COMB 133 D+0.75WX-+0.75S
1 1.0 8 0.75 4 0.75 5 0.75
LOAD COMB 134 D+0.75WZ++0.75S
1 1.0 9 0.75 4 0.75 5 0.75
LOAD COMB 135 D+0.75WZ-+0.75S
1 1.0 10 0.75 4 0.75 5 0.75
LOAD COMB 136 D+0.525EX++0.75S+EVERT
1 1.0 15 0.525 4 0.75 5 0.75 19 1.0
LOAD COMB 137 D+0.525EX-+0.75S+EVERT
1 1.0 16 0.525 4 0.75 5 0.75 19 1.0
LOAD COMB 138 D+0.525EZ++0.75S+EVERT
1 1.0 17 0.525 4 0.75 5 0.75 19 1.0
LOAD COMB 139 D+0.525EZ-+0.75S+EVERT
1 1.0 18 0.525 4 0.75 5 0.75 19 1.0
LOAD COMB 140 0.6D+WX+
1 0.6 7 1.0
LOAD COMB 141 0.6D+WX-
1 0.6 8 1.0
LOAD COMB 142 0.6D+WZ+
1 0.6 9 1.0
LOAD COMB 143 0.6D+WZ-
1 0.6 10 1.0
LOAD COMB 144 0.6D+0.7EX+-EVERT
1 0.6 15 0.7 19 -1.0
LOAD COMB 145 0.6D+0.7EX--EVERT
1 0.6 16 0.7 19 -1.0
LOAD COMB 146 0.6D+0.7EZ+-EVERT
1 0.6 17 0.7 19 -1.0
LOAD COMB 147 0.6D+0.7EZ--EVERT
1 0.6 18 0.7 19 -1.0
LOAD COMB 201 D+0.7IL
1 1.0 6 0.7
LOAD COMB 202 D+0.7IL+0.7WILX++S
1 1.0 6 0.7 11 0.7 4 1.0 5 1.0
LOAD COMB 203 D+0.7IL+0.7WILX-+S
1 1.0 6 0.7 12 0.7 4 1.0 5 1.0
LOAD COMB 204 D+0.7IL+0.7WILZ++S
1 1.0 6 0.7 13 0.7 4 1.0 5 1.0
LOAD COMB 205 D+0.7IL+0.7WILZ-+S
1 1.0 6 0.7 14 0.7 4 1.0 5 1.0
LOAD COMB 206 D+0.7IL+0.7WILX+
1 1.0 6 0.7 11 0.7
LOAD COMB 207 D+0.7IL+0.7WILX-
1 1.0 6 0.7 12 0.7
LOAD COMB 208 D+0.7IL+0.7WILZ+
1 1.0 6 0.7 13 0.7
LOAD COMB 209 D+0.7IL+0.7WILZ-
1 1.0 6 0.7 14 0.7
LOAD COMB 301 1.4D
1 1.4
LOAD COMB 302 1.2D+0.5LR
1 1.2 2 0.5
LOAD COMB 303 1.2D+0.5LR2
1 1.2 3 0.5
LOAD COMB 304 1.2D+0.5S
1 1.2 4 0.5 5 0.5
LOAD COMB 305 1.2D+1.6LR+0.8WX+
1 1.2 2 1.6 7 0.8
LOAD COMB 306 1.2D+1.6LR+0.8WX-
1 1.2 2 1.6 8 0.8
LOAD COMB 307 1.2D+1.6LR+0.8WZ+
1 1.2 2 1.6 9 0.8
LOAD COMB 308 1.2D+1.6LR+0.8WZ-
1 1.2 2 1.6 10 0.8
LOAD COMB 309 1.2D+1.6LR2+0.8WX+
1 1.2 3 1.6 7 0.8
LOAD COMB 310 1.2D+1.6LR2+0.8WX-
1 1.2 3 1.6 8 0.8
LOAD COMB 311 1.2D+1.6LR2+0.8WZ+
1 1.2 3 1.6 9 0.8
LOAD COMB 312 1.2D+1.6LR2+0.8WZ-
1 1.2 3 1.6 10 0.8
LOAD COMB 313 1.2D+1.6S+0.8WX+
1 1.2 4 1.6 5 1.6 7 0.8
LOAD COMB 314 1.2D+1.6S+0.8WX-
1 1.2 4 1.6 5 1.6 8 0.8
LOAD COMB 315 1.2D+1.6S+0.8WZ+
1 1.2 4 1.6 5 1.6 9 0.8
LOAD COMB 316 1.2D+1.6S+0.8WZ-
1 1.2 4 1.6 5 1.6 10 0.8
LOAD COMB 317 1.2D+0.5LR+1.6WX+
1 1.2 2 0.5 7 1.6
LOAD COMB 318 1.2D+0.5LR+1.6WX-
1 1.2 2 0.5 8 1.6
LOAD COMB 319 1.2D+0.5LR+1.6WZ+
1 1.2 2 0.5 9 1.6
LOAD COMB 320 1.2D+0.5LR+1.6WZ-
1 1.2 2 0.5 10 1.6
LOAD COMB 321 1.2D+0.5LR2+1.6WX+
1 1.2 3 0.5 7 1.6
LOAD COMB 322 1.2D+0.5LR2+1.6WX-
1 1.2 3 0.5 8 1.6
LOAD COMB 323 1.2D+0.5LR2+1.6WZ+
1 1.2 3 0.5 9 1.6
LOAD COMB 324 1.2D+0.5LR2+1.6WZ-
1 1.2 3 0.5 10 1.6
LOAD COMB 325 1.2D+0.5S+1.6WX+
1 1.2 4 0.5 5 0.5 7 1.6
LOAD COMB 326 1.2D+0.5S+1.6WX-
1 1.2 4 0.5 5 0.5 8 1.6
LOAD COMB 327 1.2D+0.5S+1.6WZ+
1 1.2 4 0.5 5 0.5 9 1.6
LOAD COMB 328 1.2D+0.5S+1.6WZ-
1 1.2 4 0.5 5 0.5 10 1.6
LOAD COMB 329 1.2D+EX++0.2S+EVERT
1 1.2 15 1.0 4 0.2 5 0.2 19 1.0
LOAD COMB 330 1.2D+EX-+0.2S+EVERT
1 1.2 16 1.0 4 0.2 5 0.2 19 1.0
LOAD COMB 331 1.2D+EZ++0.2S+EVERT
1 1.2 17 1.0 4 0.2 5 0.2 19 1.0
LOAD COMB 332 1.2D+EZ-+0.2S+EVERT
1 1.0 18 1.0 4 1.0 5 1.0 19 1.0
LOAD COMB 333 0.9D+1.6WX+
1 0.9 7 1.6
LOAD COMB 334 0.9D+1.6WX-
1 0.9 8 1.6
LOAD COMB 335 0.9D+1.6WZ+
1 0.9 9 1.6
LOAD COMB 336 0.9D+1.6WZ-
1 0.9 10 1.6
LOAD COMB 337 0.9D+EX+-EVERT
1 0.9 15 1.6 19 -1.0
LOAD COMB 338 0.9D+EX--EVERT
1 0.9 16 1.6 19 -1.0
LOAD COMB 339 0.9D+EZ+-EVERT
1 0.9 17 1.6 19 -1.0
LOAD COMB 340 0.9D+EZ--EVERT
1 0.9 18 1.6 19 -1.0
LOAD COMB 401 1.2D+0.2I+0.5S
1 1.2 6 0.2 4 0.5 5 0.5
LOAD COMB 402 1.2D+I+WIX++0.5S
1 1.2 6 1.0 11 1.0 4 0.5 5 0.5
LOAD COMB 403 1.2D+I+WIX-+0.5S
1 1.2 6 1.0 12 1.0 4 0.5 5 0.5
LOAD COMB 404 1.2D+I+WIZ++0.5S
1 1.2 6 1.0 13 1.0 4 0.5 5 0.5
LOAD COMB 405 1.2D+I+WIZ-+0.5S
1 1.2 6 1.0 14 1.0 4 0.5 5 0.5
LOAD COMB 406 0.9D+I+WIX+
1 0.9 6 1.0 11 1.0
LOAD COMB 407 0.9D+I+WIX-
1 0.9 6 1.0 12 1.0
LOAD COMB 408 0.9D+I+WIZ+
1 0.9 6 1.0 13 1.0
LOAD COMB 409 0.9D+I+WIZ-
1 0.9 6 1.0 14 1.0
PERFORM ANALYSIS
DEFINE ENVELOPE
101 TO 147 201 TO 209 ENVELOPE 1 TYPE SERVICEABILITY
301 TO 340 401 TO 409 ENVELOPE 2 TYPE STRENGTH
END DEFINE ENVELOPE
LOAD LIST ENV 1 2
PARAMETER 1
CODE AISC UNIFIED 2010
TORSION 1 MEMB 218 TO 221
METHOD LRFD
FU 9360 MEMB 5 10 19 20 35 TO 37 49 50 55 61 91 93 95 97 104 105 107 109 112 -
148 150 152 153 184 187 190 TO 194 218 TO 221
FU 8352 MEMB 1 TO 4 17 18 47 48 51 TO 54 92 94 96 98 108 111 113 114 -
118 TO 123 125 132 134 135 154 156 158 161 165 TO 170 172 TO 177 179 TO 183 -
188 189 205 TO 207 210 215 TO 217
FYLD 7200 MEMB 5 10 19 20 35 TO 37 49 50 55 61 91 93 95 97 104 105 107 109 -
112 148 150 152 153 184 187 190 TO 194 218 TO 221
FYLD 6624 MEMB 1 TO 4 51 TO 54 113 114 118 TO 121 134 135 173 TO 175 183 188
FYLD 5184 MEMB 17 18 47 48 92 94 96 98 108 111 122 123 125 132 154 156 158 -
161 165 TO 170 172 176 177 179 TO 182 189 205 TO 207 210 215 TO 217
DJ2 39 MEMB 51 53
DJ1 32 MEMB 51 53
DJ2 1 MEMB 1 3
DJ1 8 MEMB 1 3
DJ2 39 MEMB 55 61 91 95 105
DJ1 79 MEMB 55 61 91 95 105
DJ2 8 MEMB 5 10 93 97 107
DJ1 10 MEMB 5 10 93 97 107
DJ2 33 MEMB 52 54
DJ1 79 MEMB 52 54
DJ2 2 MEMB 2 4
DJ1 10 MEMB 2 4
DJ2 111 MEMB 123 206 216
DJ1 136 MEMB 123 206 216
DJ2 110 MEMB 122 207 215
DJ1 137 MEMB 122 207 215
DJ2 104 MEMB 118 173
DJ1 103 MEMB 118 173
DJ2 106 MEMB 134 175
DJ1 102 MEMB 134 175
DJ2 105 MEMB 120 174
DJ1 100 MEMB 120 174
DJ2 135 MEMB 190 193 194
DJ1 131 MEMB 190 193 194
DJ1 39 MEMB 49 184
DJ2 131 MEMB 49 184
DJ2 131 MEMB 19 35
DJ1 8 MEMB 19 35
DJ1 79 MEMB 37 50 150
DJ2 135 MEMB 37 50 150
DJ2 135 MEMB 20 148 187
DJ1 10 MEMB 20 148 187
DJ1 100 MEMB 36 152
DJ2 139 MEMB 36 152
DJ2 139 MEMB 153 192
DJ1 9 MEMB 153 192
DJ1 77 MEMB 104 112
DJ2 138 MEMB 104 112
DJ2 138 MEMB 109 191
DJ1 62 MEMB 109 191
DJ2 82 MEMB 166 TO 168 180
DJ1 136 MEMB 166 TO 168 180
DJ2 122 MEMB 125 158 161 181
DJ1 121 MEMB 125 158 161 181
DFF 360 ALL
LZ 6.67 MEMB 5 10 55 61 91 93 95 97 105 107 190 193 194
LZ 5 MEMB 122 123 206 207 215 216
LZ 15 MEMB 19 20 35 TO 37 49 50 104 109 112 148 150 152 153 184 187 191 192
LY 16 MEMB 19 20 35 37 49 50 148 150 184 187
LY 27.5 MEMB 36 104 109 112 152 153 191 192
LY 12.5 MEMB 5 10 55 61 91 93 95 97 105 107
LY 12 MEMB 125 158 161 166 TO 168 180 181
LY 12 MEMB 122 123 206 207 215 216
LY 5.5 MEMB 132 154 156 169 170 172 189
KZ 2 MEMB 1 TO 4 51 TO 54 113 114 118 TO 121 134 135 173 TO 175 183 188
KY 2 MEMB 1 TO 4 51 TO 54 113 114 118 TO 121 134 135 173 TO 175 183 188
CHECK CODE ALL
FINISH

STAAD Instability weak spring

Sal — Thu, 27 Jun 2019 04:04:05 GMT

Hello,

I am getting a weak spring message in this code. I am not able to understand why this is happening. My assumption is that it's because of pinned end supports there is some moment in the frame which is not able to get resolved. If my assumption is right then can someone please help me resolve this. (I can't make any support fixed).

Thanks a lot.

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 19-Apr-19
END JOB INFORMATION
INPUT WIDTH 79
UNIT FEET KIP
JOINT COORDINATES
1 0 0 -0.000399272; 2 0 0 12.6667; 3 0 1 0; 4 0 1 12.6667; 8 0 2 -0.000399272;
9 0 2 7.1667; 10 0 2 12.6667; 15 1.5 2 -0.000399272; 16 1.5 2 12.6667;
24 13.775 2 3.3335; 30 26.05 2 -0.000399272; 31 26.05 2 12.6667;
32 27.55 0 -0.000399272; 33 27.55 0 12.6667; 34 27.55 1 0; 35 27.55 1 12.6667;
39 27.55 2 -0.000399272; 49 27.55 2 11.1667; 50 0 2 11.1667; 51 27.55 2 1.4996;
52 0 2 1.4996; 62 0 2 6.6667; 64 1.5 2 6.6667; 66 26.05 2 6.6667;
67 34.0497 0 7.167; 69 34.0497 0 10.667; 70 34.0497 3.5 10.667;
75 6.8 2 12.6667; 77 27.55 2 6.6667; 79 27.55 2 12.6667; 81 27.55 7 10.6667;
82 6.8 7 12.6667; 90 27.55 7 12.6667; 92 18.8003 2 12.6667;
96 18.8002 7 12.6667; 100 27.55 2 7.1667; 101 34.0497 3.5 7.167;
102 18.8 2 7.1667; 103 6.8 2 7.1667; 104 6.8 7 7.1667; 105 27.55 7 7.1667;
106 18.8 7 7.1667; 110 40.5493 0 7.167; 111 40.5493 0 10.667;
119 12.8003 7 12.6667; 120 18.8 7 6.6667; 121 6.8 7 6.6667; 122 27.55 7 6.6667;
123 12.8 7 6.6667; 124 6.8 6.5 7.1667; 125 27.55 6.5 7.1667;
126 18.8 6.5 7.1667; 127 23.1753 7 12.6667; 128 23.175 7 6.6667;
MEMBER INCIDENCES
1 3 1; 2 4 2; 3 8 3; 4 10 4; 5 9 62; 10 9 50; 17 15 3; 18 16 4; 19 8 15;
20 10 16; 35 15 30; 36 100 102; 37 31 92; 47 30 34; 48 31 35; 49 30 39;
50 31 79; 51 34 32; 52 35 33; 53 39 34; 54 79 35; 55 100 77; 61 49 100;
91 49 79; 92 35 49; 93 50 10; 94 4 50; 95 51 39; 96 34 51; 97 52 8; 98 3 52;
104 77 66; 105 77 51; 107 62 52; 108 15 64; 109 64 62; 111 30 66; 112 66 64;
113 67 101; 114 69 70; 118 103 124; 119 75 82; 120 100 125; 121 79 90;
122 105 101; 123 81 70; 125 121 123; 132 81 105; 134 102 126; 135 92 96;
139 90 81; 148 75 16; 150 92 75; 152 102 103; 153 103 9; 154 104 82;
156 106 96; 158 120 128; 161 123 120; 163 101 110; 164 70 111; 165 119 123;
166 82 119; 167 96 127; 168 119 96; 169 105 122; 170 106 120; 172 104 121;
173 124 104; 174 125 105; 175 126 106; 176 124 121; 177 126 120; 179 125 122;
180 127 90; 181 128 122; 182 127 128;
DEFINE MATERIAL START
ISOTROPIC STEEL
E 4.176e+006
POISSON 0.3
DENSITY 0.489024
ALPHA 6e-006
DAMP 0.03
TYPE STEEL
STRENGTH FY 5184 FU 8352 RY 1.5 RT 1.2
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
132 139 154 156 165 169 170 172 182 TABLE ST C4X5
1 TO 4 51 TO 54 TABLE ST HSST6X6X0.5
MEMBER PROPERTY AMERICAN
17 18 47 48 92 94 96 98 176 177 179 TABLE ST L30308
5 10 19 20 35 TO 37 49 50 55 61 91 93 95 97 104 105 107 TO 109 111 112 148 -
150 152 153 TABLE ST W12X45
125 158 161 166 TO 168 180 181 TABLE ST MC4X13
113 114 118 TO 121 134 135 173 TO 175 TABLE ST HSST3X3X0.375
122 123 163 164 TABLE ST MC10X22
CONSTANTS
BETA 45 MEMB 17 18 47 48 92 94 96 98 176 177 179
MATERIAL STEEL ALL
SUPPORTS
110 111 FIXED BUT FX MX MY MZ
1 2 32 33 67 69 PINNED
120 TO 122 FIXED BUT FX FY MX MY MZ
MEMBER RELEASE
19 20 36 104 108 111 139 165 182 START MY MZ
49 50 108 109 111 153 154 156 165 169 170 172 182 END MY MZ
122 123 START FX MY MZ
MEMBER TRUSS
17 18 47 48 92 94 96 98 176 177 179
SLAVE ZX MASTER 24 JOINT 15 30 64 66
LOAD 1 LOADTYPE Dead TITLE DL
SELFWEIGHT Y -1 LIST ALL
MEMBER LOAD
19 35 49 104 109 112 UNI GY -0.17
156 165 170 182 UNI GY -0.048
132 139 154 169 172 UNI GY -0.024
122 123 163 164 UNI GY -0.014
LOAD 2 LOADTYPE Roof Live TITLE LR
MEMBER LOAD
156 165 170 182 UNI GY -0.36
132 139 154 169 172 UNI GY -0.18
122 123 163 164 UNI GY -0.18
LOAD 3 LOADTYPE Roof Live TITLE LRCONC
MEMBER LOAD
156 165 170 182 UNI GY -0.36
132 139 154 169 172 UNI GY -0.18
122 CON GY -1 0.5
LOAD 4 LOADTYPE Snow TITLE SL
MEMBER LOAD
19 35 49 104 109 112 UNI GY -0.08
156 165 170 182 UNI GY -0.13
132 139 154 169 172 UNI GY -0.065
122 123 163 164 UNI GY 0.04
LOAD 5 LOADTYPE Snow TITLE SL DRIFT
MEMBER LOAD
170 TRAP GY -0.1665 -0.18
156 TRAP GY -0.1665 -0.02
165 182 TRAP GY -0.02 -0.18
169 172 TRAP GY -0.08425 -0.09
154 TRAP GY -0.08425 -0.01
132 TRAP GY -0.054 -0.08425
139 TRAP GY -0.01 -0.054
LOAD 6 LOADTYPE Ice TITLE IL
MEMBER LOAD
156 165 170 182 UNI GY -0.14
132 139 154 169 172 UNI GY -0.07
122 123 163 164 UNI GY -0.035
19 35 49 104 109 112 UNI GY -0.05
19 35 49 104 109 112 UNI GY -0.042
1 TO 4 51 TO 54 UNI GY -0.022
17 18 47 48 92 94 96 98 176 177 179 UNI GY -0.012
125 132 139 154 156 158 161 165 TO 170 172 180 TO 182 UNI GY -0.013
5 10 19 20 35 TO 37 49 50 55 61 91 93 95 97 104 105 107 TO 109 111 112 148 -
150 152 153 UNI GY -0.04
122 123 163 164 UNI GY -0.025
113 114 118 TO 121 134 135 173 TO 175 UNI GY -0.015
LOAD 7 LOADTYPE Wind TITLE WIND +X
MEMBER LOAD
19 35 49 104 109 112 UMOM GZ -0.55
19 35 49 104 109 112 UNI GX 0.12
122 123 163 164 UNI GX 0.009
1 TO 4 UNI GX 0.04
113 114 118 119 173 UNI GX 0.02
154 172 UNI GX 0.03
94 98 176 UNI GX 0.02
5 10 93 97 107 UNI GX 0.08
LOAD 8 LOADTYPE Wind TITLE WIND -X
MEMBER LOAD
19 35 49 104 109 112 UMOM GZ 0.55
19 35 49 104 109 112 UNI GX -0.12
122 123 163 164 UNI GX -0.009
51 TO 54 UNI GX -0.04
113 114 120 121 174 UNI GX -0.02
132 139 169 UNI GX -0.03
92 96 179 UNI GX -0.02
55 61 91 95 105 UNI GX -0.08
LOAD 9 LOADTYPE Wind TITLE WIND +Z
MEMBER LOAD
19 35 49 104 109 112 UNI GZ 0.42
19 35 49 UNI GY 0.33
104 109 112 UNI GY -0.33
122 163 UNI GZ 0.07
1 3 51 53 UNI GZ 0.022
113 UNI GZ 0.011
17 47 UNI GZ 0.023
19 35 49 UNI GZ 0.09
LOAD 10 LOADTYPE Wind TITLE WIND -Z
MEMBER LOAD
19 35 49 104 109 112 UNI GZ -0.42
104 109 112 UNI GY 0.33
19 35 49 UNI GY -0.33
123 164 UNI GZ -0.07
2 4 52 54 UNI GZ -0.022
114 119 121 135 UNI GZ -0.011
18 48 UNI GZ -0.023
20 37 50 148 150 UNI GZ -0.09
166 TO 168 180 UNI GZ -0.03
LOAD 11 LOADTYPE Wind on Ice TITLE WIL+X
MEMBER LOAD
122 123 163 164 UNI GX 0.006
1 TO 4 UNI GX 0.009
154 172 UNI GX 0.01
94 98 176 UNI GX 0.005
5 10 93 97 107 UNI GX 0.017
113 114 118 119 173 UNI GX 0.005
LOAD 12 LOADTYPE Wind on Ice TITLE WIL-X
MEMBER LOAD
122 123 163 164 UNI GX -0.006
51 TO 54 UNI GX -0.009
113 114 120 121 174 UNI GX -0.005
132 139 169 UNI GX -0.01
92 96 179 UNI GX -0.005
55 61 91 95 105 UNI GX -0.017
LOAD 13 LOADTYPE Wind on Ice TITLE WIL+Z
MEMBER LOAD
122 163 UNI GZ 0.02
1 3 51 53 UNI GZ 0.009
113 UNI GZ 0.005
17 47 UNI GZ 0.005
19 35 49 UNI GZ 0.018
LOAD 14 LOADTYPE Wind on Ice TITLE WIL-Z
MEMBER LOAD
123 164 UNI GZ -0.02
2 4 52 54 UNI GZ -0.009
114 119 121 135 UNI GZ -0.005
18 48 UNI GZ -0.011
20 37 50 148 150 UNI GZ -0.005
166 TO 168 180 UNI GZ -0.018
LOAD 15 LOADTYPE Seismic TITLE EL+X
NOTIONAL LOAD
1 X 0.02
LOAD 16 LOADTYPE Seismic TITLE EL-X
NOTIONAL LOAD
1 X -0.02
LOAD 17 LOADTYPE Seismic TITLE EL+Z
NOTIONAL LOAD
1 Z 0.002
LOAD 18 LOADTYPE Seismic TITLE EL-Z
NOTIONAL LOAD
1 Z -0.02
LOAD 19 LOADTYPE Temperature TITLE TEMP+
LOAD 20 LOADTYPE Temperature TITLE TEMP-
LOAD COMB 101 D
1 1.0
LOAD COMB 102 D+LR
1 1.0 2 1.0
LOAD COMB 103 D+LR2
1 1.0 3 1.0
LOAD COMB 104 D+S
1 1.0 4 1.0 5 1.0
LOAD COMB 105 D+0.75LR
1 1.0 2 0.75
LOAD COMB 106 D+0.75LR2
1 1.0 3 0.75
LOAD COMB 107 D+0.75S
1 1.0 4 0.75 5 0.75
LOAD COMB 108 D+WX+
1 1.0 7 1.0
LOAD COMB 109 D+WX-
1 1.0 8 1.0
LOAD COMB 110 D+WZ+
1 1.0 9 1.0
LOAD COMB 111 D+WZ-
1 1.0 10 1.0
LOAD COMB 112 D+0.7EX+
1 1.0 15 0.7
LOAD COMB 113 D+0.7EX-
1 1.0 16 0.7
LOAD COMB 114 D+0.7EZ+
1 1.0 17 0.7
LOAD COMB 115 D+0.7EZ-
1 1.0 18 0.7
LOAD COMB 116 D+0.75WX++0.75LR
1 1.0 7 0.75 2 0.75
LOAD COMB 117 D+0.75WX-+0.75LR
1 1.0 8 0.75 2 0.75
LOAD COMB 118 D+0.75WZ++0.75LR
1 1.0 9 0.75 2 0.75
LOAD COMB 119 D+0.75WZ-+0.75LR
1 1.0 10 0.75 2 0.75
LOAD COMB 120 D+0.75WX++0.75LR2
1 1.0 7 0.75 3 0.75
LOAD COMB 121 D+0.75WX-+0.75LR2
1 1.0 8 0.75 3 0.75
LOAD COMB 122 D+0.75WZ++0.75LR2
1 1.0 9 0.75 3 0.75
LOAD COMB 123 D+0.75WZ-+0.75LR2
1 1.0 10 0.75 3 0.75
LOAD COMB 124 D+0.75EX++0.75LR
1 1.0 15 0.75 2 0.75
LOAD COMB 125 D+0.75EX-+0.75LR
1 1.0 16 0.75 2 0.75
LOAD COMB 126 D+0.75EZ++0.75LR
1 1.0 17 0.75 2 0.75
LOAD COMB 127 D+0.75EZ-+0.75LR
1 1.0 18 0.75 2 0.75
LOAD COMB 128 D+0.75EX++0.75LR2
1 1.0 15 0.75 3 0.75
LOAD COMB 129 D+0.75EX-+0.75LR2
1 1.0 16 0.75 3 0.75
LOAD COMB 130 D+0.75EZ++0.75LR2
1 1.0 17 0.75 3 0.75
LOAD COMB 131 D+0.75EZ-+0.75LR2
1 1.0 18 0.75 3 0.75
LOAD COMB 132 D+0.75WX++0.75S
1 1.0 7 0.75 4 0.75 5 0.75
LOAD COMB 133 D+0.75WX-+0.75S
1 1.0 8 0.75 4 0.75 5 0.75
LOAD COMB 134 D+0.75WZ++0.75S
1 1.0 9 0.75 4 0.75 5 0.75
LOAD COMB 135 D+0.75WZ-+0.75S
1 1.0 10 0.75 4 0.75 5 0.75
LOAD COMB 136 D+0.525EX++0.75S
1 1.0 15 0.525 4 0.75 5 0.75
LOAD COMB 137 D+0.525EX-+0.75S
1 1.0 16 0.525 4 0.75 5 0.75
LOAD COMB 138 D+0.525EZ++0.75S
1 1.0 17 0.525 4 0.75 5 0.75
LOAD COMB 139 D+0.525EZ-+0.75S
1 1.0 18 0.525 4 0.75 5 0.75
LOAD COMB 140 0.6D+WX+
1 0.6 7 1.0
LOAD COMB 141 0.6D+WX-
1 0.6 8 1.0
LOAD COMB 142 0.6D+WZ+
1 0.6 9 1.0
LOAD COMB 143 0.6D+WZ-
1 0.6 10 1.0
LOAD COMB 144 0.6D+0.7EX+
1 0.6 15 0.7
LOAD COMB 145 0.6D+0.7EX-
1 0.6 16 0.7
LOAD COMB 146 0.6D+0.7EZ+
1 0.6 17 0.7
LOAD COMB 147 0.6D+0.7EZ-
1 0.6 18 0.7
LOAD COMB 201 D+0.7IL
1 1.0 6 0.7
LOAD COMB 202 D+0.7IL+0.7WILX++S
1 1.0 6 0.7 11 0.7 4 1.0 5 1.0
LOAD COMB 203 D+0.7IL+0.7WILX-+S
1 1.0 6 0.7 12 0.7 4 1.0 5 1.0
LOAD COMB 204 D+0.7IL+0.7WILZ++S
1 1.0 6 0.7 13 0.7 4 1.0 5 1.0
LOAD COMB 205 D+0.7IL+0.7WILZ-+S
1 1.0 6 0.7 14 0.7 4 1.0 5 1.0
LOAD COMB 206 D+0.7IL+0.7WILX+
1 1.0 6 0.7 11 0.7
LOAD COMB 207 D+0.7IL+0.7WILX-
1 1.0 6 0.7 12 0.7
LOAD COMB 208 D+0.7IL+0.7WILZ+
1 1.0 6 0.7 13 0.7
LOAD COMB 209 D+0.7IL+0.7WILZ-
1 1.0 6 0.7 14 0.7
LOAD COMB 301 1.4D
1 1.4
LOAD COMB 302 1.2D+0.5LR
1 1.2 2 0.5
LOAD COMB 303 1.2D+0.5LR2
1 1.2 3 0.5
LOAD COMB 304 1.2D+0.5S
1 1.2 4 0.5 5 0.5
LOAD COMB 305 1.2D+1.6LR+0.8WX+
1 1.2 2 1.6 7 0.8
LOAD COMB 306 1.2D+1.6LR+0.8WX-
1 1.2 2 1.6 8 0.8
LOAD COMB 307 1.2D+1.6LR+0.8WZ+
1 1.2 2 1.6 9 0.8
LOAD COMB 308 1.2D+1.6LR+0.8WZ-
1 1.2 2 1.6 10 0.8
LOAD COMB 309 1.2D+1.6LR2+0.8WX+
1 1.2 3 1.6 7 0.8
LOAD COMB 310 1.2D+1.6LR2+0.8WX-
1 1.2 3 1.6 8 0.8
LOAD COMB 311 1.2D+1.6LR2+0.8WZ+
1 1.2 3 1.6 9 0.8
LOAD COMB 312 1.2D+1.6LR2+0.8WZ-
1 1.2 3 1.6 10 0.8
LOAD COMB 313 1.2D+1.6S+0.8WX+
1 1.2 4 1.6 5 1.6 7 0.8
LOAD COMB 314 1.2D+1.6S+0.8WX-
1 1.2 4 1.6 5 1.6 8 0.8
LOAD COMB 315 1.2D+1.6S+0.8WZ+
1 1.2 4 1.6 5 1.6 9 0.8
LOAD COMB 316 1.2D+1.6S+0.8WZ-
1 1.2 4 1.6 5 1.6 10 0.8
LOAD COMB 317 1.2D+0.5LR+1.6WX+
1 1.2 2 0.5 7 1.6
LOAD COMB 318 1.2D+0.5LR+1.6WX-
1 1.2 2 0.5 8 1.6
LOAD COMB 319 1.2D+0.5LR+1.6WZ+
1 1.2 2 0.5 9 1.6
LOAD COMB 320 1.2D+0.5LR+1.6WZ-
1 1.2 2 0.5 10 1.6
LOAD COMB 321 1.2D+0.5LR2+1.6WX+
1 1.2 3 0.5 7 1.6
LOAD COMB 322 1.2D+0.5LR2+1.6WX-
1 1.2 3 0.5 8 1.6
LOAD COMB 323 1.2D+0.5LR2+1.6WZ+
1 1.2 3 0.5 9 1.6
LOAD COMB 324 1.2D+0.5LR2+1.6WZ-
1 1.2 3 0.5 10 1.6
LOAD COMB 325 1.2D+0.5S+1.6WX+
1 1.2 4 0.5 5 0.5 7 1.6
LOAD COMB 326 1.2D+0.5S+1.6WX-
1 1.2 4 0.5 5 0.5 8 1.6
LOAD COMB 327 1.2D+0.5S+1.6WZ+
1 1.2 4 0.5 5 0.5 9 1.6
LOAD COMB 328 1.2D+0.5S+1.6WZ-
1 1.2 4 0.5 5 0.5 10 1.6
LOAD COMB 329 1.2D+EX++0.2S
1 1.2 15 1.0 4 0.2 5 0.2
LOAD COMB 330 1.2D+EX-+0.2S
1 1.2 16 1.0 4 0.2 5 0.2
LOAD COMB 331 1.2D+EZ++0.2S
1 1.2 17 1.0 4 0.2 5 0.2
LOAD COMB 332 1.2D+EZ-+0.2S
1 1.0 18 1.0 4 1.0 5 1.0
LOAD COMB 333 0.9D+1.6WX+
1 0.9 7 1.6
LOAD COMB 334 0.9D+1.6WX-
1 0.9 8 1.6
LOAD COMB 335 0.9D+1.6WZ+
1 0.9 9 1.6
LOAD COMB 336 0.9D+1.6WZ-
1 0.9 10 1.6
LOAD COMB 337 0.9D+EX+
1 0.9 15 1.6
LOAD COMB 338 0.9D+EX-
1 0.9 16 1.6
LOAD COMB 339 0.9D+EZ+
1 0.9 17 1.6
LOAD COMB 340 0.9D+EZ-
1 0.9 18 1.6
LOAD COMB 401 1.2D+0.2I+0.5S
1 1.2 6 0.2 4 0.5 5 0.5
LOAD COMB 402 1.2D+I+WIX++0.5S
1 1.2 6 1.0 11 1.0 4 0.5 5 0.5
LOAD COMB 403 1.2D+I+WIX-+0.5S
1 1.2 6 1.0 12 1.0 4 0.5 5 0.5
LOAD COMB 404 1.2D+I+WIZ++0.5S
1 1.2 6 1.0 13 1.0 4 0.5 5 0.5
LOAD COMB 405 1.2D+I+WIZ-+0.5S
1 1.2 6 1.0 14 1.0 4 0.5 5 0.5
LOAD COMB 406 0.9D+I+WIX+
1 0.9 6 1.0 11 1.0
LOAD COMB 407 0.9D+I+WIX-
1 0.9 6 1.0 12 1.0
LOAD COMB 408 0.9D+I+WIZ+
1 0.9 6 1.0 13 1.0
LOAD COMB 409 0.9D+I+WIZ-
1 0.9 6 1.0 14 1.0
PERFORM ANALYSIS
DEFINE ENVELOPE
101 TO 147 201 TO 209 ENVELOPE 1 TYPE SERVICEABILITY
301 TO 340 401 TO 409 ENVELOPE 2 TYPE STRENGTH
END DEFINE ENVELOPE
LOAD LIST ENV 1 2
PARAMETER 1
CODE AISC UNIFIED 2010
METHOD LRFD
FU 9360 MEMB 5 10 19 20 35 TO 37 49 50 55 61 91 93 95 97 104 105 107 TO 109 -
111 112 148 150 152 153
FU 8352 MEMB 1 TO 4 17 18 47 48 51 TO 54 92 94 96 98 113 114 118 TO 123 125 -
132 134 135 139 154 156 158 161 163 TO 168 173 TO 175 180 TO 182
FYLD 7200 MEMB 5 10 19 20 35 TO 37 49 50 55 61 91 93 95 97 104 105 -
107 TO 109 111 112 148 150 152 153
FYLD 6624 MEMB 1 TO 4 51 TO 54 113 114 118 TO 121 134 135 173 TO 175
FYLD 5184 MEMB 17 18 47 48 92 94 96 98 122 123 125 132 139 154 156 158 161 -
163 TO 168 180 TO 182
DJ2 8 MEMB 19 35 49
DJ1 39 MEMB 19 35 49
DJ2 39 MEMB 51 53
DJ1 32 MEMB 51 53
DJ2 1 MEMB 1 3
DJ1 8 MEMB 1 3
DJ2 39 MEMB 55 61 91 95 105
DJ1 79 MEMB 55 61 91 95 105
DJ2 8 MEMB 5 10 93 97 107
DJ1 10 MEMB 5 10 93 97 107
DJ2 9 MEMB 36 152 153
DJ1 100 MEMB 36 152 153
DJ2 62 MEMB 104 109 112
DJ1 77 MEMB 104 109 112
DJ2 33 MEMB 52 54
DJ1 79 MEMB 52 54
DJ2 2 MEMB 2 4
DJ1 10 MEMB 2 4
DJ2 10 MEMB 20 37 50 148 150
DJ1 79 MEMB 20 37 50 148 150
DJ2 111 MEMB 123 164
DJ1 81 MEMB 123 164
DJ2 110 MEMB 122 163
DJ1 105 MEMB 122 163
DJ2 104 MEMB 118 173
DJ1 103 MEMB 118 173
DJ2 106 MEMB 134 175
DJ1 102 MEMB 134 175
DJ2 105 MEMB 120 174
DJ1 100 MEMB 120 174
DFF 360 ALL
LZ 7 MEMB 5 10 55 61 91 93 95 97 105 107
LZ 15 MEMB 122 123 163 164
LZ 25 MEMB 19 35 49 104 109 112
LZ 28 MEMB 20 36 37 50 148 150 152 153
LY 28 MEMB 19 20 35 TO 37 49 50 104 109 112 148 150 152 153
LY 13 MEMB 5 10 55 61 91 93 95 97 105 107
LY 12 MEMB 125 158 161 166 TO 168 180 181
LY 7.5 MEMB 122 123 163 164
LY 5.5 MEMB 132 139 154 156 169 170 172
KZ 2 MEMB 1 TO 4 51 TO 54 113 114 118 TO 121 134 135 173 TO 175
KY 2 MEMB 1 TO 4 51 TO 54 113 114 118 TO 121 134 135 173 TO 175
CHECK CODE ALL
FINISH

Ly and Lz for single beam divided by intermediate members.

Sal — Thu, 20 Jun 2019 20:52:25 GMT

Hello,

I have a model in which there is a beam divided in 3 parts because of intermediary steel members (32, 73, 78). As this beam is only restricted laterally and not vertically I gave length (Ly) in vertical direction as combined length of the beam.

Is this the right procedure to model in STAAD or should I not give Ly as 18ft in this model.

Any help will be appreciated.

Thanks

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 1-JUNE-19
JOB NAME Harmon
JOB REF RTU-02 Platform
END JOB INFORMATION
INPUT WIDTH 79
UNIT INCHES POUND
JOINT COORDINATES
1 -132 -12 -36; 2 -132 -12 12; 7 84 -12 -36; 8 84 -12 12; 9 137.996 -12 -36;
10 137.996 -12 0; 11 192 -12 -36; 12 192 -12 0; 13 192 6 -36; 14 192 6 0;
15 192 24 -36; 16 192 24 0; 17 137.996 41.996 -36; 18 137.996 41.996 0;
19 137.996 59.996 -36; 20 137.996 59.996 0; 21 137.996 77.996 -36;
22 137.996 77.996 0; 23 -132 96 -36; 24 -132 96 24; 27 12 96 -36;
28 12.0036 96 24; 29 84 96 -36; 30 84 96 0; 31 84 96 24; 32 84 114 -36;
33 84 114 0; 34 -132 117 -36; 35 -132 117 24; 36 -60 117 -36; 37 12 117 -36;
38 84 117 -36; 39 84 132 -36; 40 84 132 0; 41 -132 138 -36; 42 -132 138 24;
43 -60 138 -36; 44 12 138 -36; 45 84 138 -36; 46 84 138 0; 47 84 117 24;
48 84 138 24; 49 84 117 0; 50 -60 -12 -36; 51 -59.9964 -12 12; 52 -60 96 -36;
53 -59.9964 96 24; 54 -132 96 12; 55 -59.9971 96 12; 56 84 96 12;
MEMBER INCIDENCES
1 11 13; 2 12 14; 3 9 17; 4 10 18; 5 17 11; 6 18 12; 7 13 15; 8 14 16; 9 13 19;
10 20 14; 11 17 18; 12 1 23; 13 2 54; 18 7 29; 19 8 56; 20 17 19; 21 18 20;
22 15 21; 23 16 22; 24 19 21; 25 20 22; 26 29 17; 27 30 18; 28 32 19; 29 33 20;
30 23 54; 31 23 52; 32 24 53; 33 52 55; 34 52 27; 36 27 28; 37 27 29; 38 28 31;
39 30 29; 40 31 56; 41 21 39; 42 22 40; 43 29 32; 44 30 33; 45 23 34; 46 24 35;
47 52 36; 48 27 37; 49 32 38; 50 34 35; 51 36 34; 52 37 36; 53 38 37; 54 33 49;
55 38 39; 56 34 41; 57 35 42; 58 36 43; 59 37 44; 60 39 45; 61 40 46; 62 41 42;
63 43 41; 64 44 43; 65 45 44; 66 31 47; 67 47 48; 68 48 46; 69 49 40; 70 47 49;
71 50 52; 72 51 55; 73 53 28; 74 54 24; 75 55 53; 76 56 30;
MEMBER RELEASE
11 30 33 36 40 START MY MZ
11 36 39 74 75 END MY MZ
26 27 START FX MY MZ
DEFINE MATERIAL START
ISOTROPIC STEEL
E 2.9e+007
POISSON 0.3
DENSITY 0.283
ALPHA 6e-006
DAMP 0.03
TYPE STEEL
STRENGTH FY 36000 FU 58000 RY 1.5 RT 1.2
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
1 2 7 TO 10 20 TO 25 28 29 41 TO 70 TABLE ST HSSP1.900X0.12
3 4 12 13 18 19 71 72 TABLE ST HSST3X3X0.25
5 6 26 27 TABLE ST MC10X22
11 30 33 36 39 40 74 TO 76 TABLE ST C3X6
31 32 34 37 38 73 TABLE ST MC4X13
CONSTANTS
BETA 180 MEMB 6 27 30 32 38 TO 40 73 74 76
MATERIAL STEEL ALL
SUPPORTS
24 31 53 FIXED BUT FX FY MX MY MZ
1 2 7 TO 10 50 51 FIXED
11 12 PINNED
LOAD 1 LOADTYPE Dead TITLE DEAD
SELFWEIGHT Y -1
UNIT FEET POUND
MEMBER LOAD
33 36 75 UNI GY -48
30 39 40 74 76 UNI GY -24
5 6 26 27 UNI GY -12
LOAD 2 LOADTYPE Roof Live TITLE LIVE ROOF
MEMBER LOAD
33 36 75 UNI GY -360
30 39 40 74 76 UNI GY -180
5 6 26 27 UNI GY -150
LOAD 3 LOADTYPE Roof Live REDUCIBLE TITLE LIVE STAIR CONC 1000 LBS
MEMBER LOAD
11 CON GY -1000 0.05
33 36 75 UNI GY -360
30 39 40 74 76 UNI GY -180
LOAD 4 LOADTYPE Snow TITLE SNOW BALANCED
MEMBER LOAD
33 36 75 UNI GY -126
30 39 40 74 76 UNI GY -63
5 6 26 27 UNI GY -31.5
LOAD 5 LOADTYPE Snow TITLE SNOW DRIFT
MEMBER LOAD
74 TRAP GY -76.256 -89.68
30 TRAP GY -22.56 -76.256
36 TRAP GY -45.11 -179.36
75 TRAP GY -152.51 -179.36
33 TRAP GY -45.11 -152.51
39 TRAP GY -62.83 -22.56
76 TRAP GY -76.255 -62.83
40 TRAP GY -89.68 -76.255
LOAD 6 LOADTYPE Ice TITLE ICE
MEMBER LOAD
33 36 75 UNI GY -119.3
30 39 40 74 76 UNI GY -59.65
5 6 26 27 UNI GY -29.83
3 4 12 13 18 19 71 72 UNI GY -13.85
11 30 TO 34 36 TO 40 73 TO 76 UNI GY -13.05
5 6 26 27 UNI GY -23.21
1 2 7 TO 10 20 TO 25 27 TO 29 41 TO 48 50 TO 53 55 TO 59 62 TO 70 UNI GY -6.96
LOAD 7 LOADTYPE Wind TITLE WIND X
MEMBER LOAD
6 27 UNI GX 7.71
12 13 UNI GX 19.76
11 30 74 UNI GX 26.34
LOAD 8 LOADTYPE Wind TITLE WIND -X
MEMBER LOAD
5 6 26 27 UNI GX -7.71
3 4 18 19 UNI GX -19.76
11 39 40 76 UNI GX -26.34
LOAD 9 LOADTYPE Wind TITLE WIND Z
MEMBER LOAD
5 26 UNI GZ 69.59
3 12 18 71 UNI GZ 20.88
31 34 37 UNI GZ 27.84
LOAD 10 LOADTYPE Wind TITLE WIND -Z
MEMBER LOAD
6 27 UNI GZ -69.59
4 19 UNI GZ -20.88
LOAD 11 LOADTYPE Wind on Ice TITLE WIND ON ICE X
MEMBER LOAD
6 27 UNI GX 5.71
12 13 UNI GX 8.2
11 30 74 UNI GX 9.56
LOAD 12 LOADTYPE Wind on Ice TITLE WIND ON ICE -X
MEMBER LOAD
5 6 26 27 UNI GX -5.71
3 4 18 19 UNI GX -8.2
11 39 40 76 UNI GX -9.56
LOAD 13 LOADTYPE Wind on Ice TITLE WIND ON ICE Z
MEMBER LOAD
5 26 UNI GZ 18.73
3 12 18 71 UNI GZ 8.67
31 34 37 UNI GZ 10.1
LOAD 14 LOADTYPE Wind on Ice TITLE WIND ON ICE -Z
MEMBER LOAD
6 27 UNI GZ -18.75
4 19 UNI GZ -8.67
LOAD 15 LOADTYPE Seismic TITLE EL NOTIONAL X+
NOTIONAL LOAD
1 X 0.02
LOAD 16 LOADTYPE Seismic TITLE EL NOTIONAL X-
NOTIONAL LOAD
1 X -0.02
LOAD 17 LOADTYPE Seismic TITLE EL NOTIONAL Z+
NOTIONAL LOAD
1 Z 0.02
LOAD 18 LOADTYPE Seismic TITLE EL NOTIONAL Z-
NOTIONAL LOAD
1 Z -0.02
LOAD 19 LOADTYPE Temperature TITLE TEMPERATURE+
LOAD 20 LOADTYPE Temperature TITLE TEMPERATURE-
LOAD COMB 101 D
1 1.0
LOAD COMB 102 D+LR
1 1.0 2 1.0
LOAD COMB 103 D+LR2
1 1.0 3 1.0
LOAD COMB 104 D+S
1 1.0 4 1.0 5 1.0
LOAD COMB 105 D+0.75LR
1 1.0 2 0.75
LOAD COMB 106 D+0.75LR2
1 1.0 3 0.75
LOAD COMB 107 D+0.75S
1 1.0 4 0.75 5 0.75
LOAD COMB 108 D+WX+
1 1.0 7 1.0
LOAD COMB 109 D+WX-
1 1.0 8 1.0
LOAD COMB 110 D+WZ+
1 1.0 9 1.0
LOAD COMB 111 D+WZ-
1 1.0 10 1.0
LOAD COMB 112 D+0.7EX+
1 1.0 15 0.7
LOAD COMB 113 D+0.7EX-
1 1.0 16 0.7
LOAD COMB 114 D+0.7EZ+
1 1.0 17 0.7
LOAD COMB 115 D+0.7EZ-
1 1.0 18 0.7
LOAD COMB 116 D+0.75WX++0.75LR
1 1.0 7 0.75 2 0.75
LOAD COMB 117 D+0.75WX-+0.75LR
1 1.0 8 0.75 2 0.75
LOAD COMB 118 D+0.75WZ++0.75LR
1 1.0 9 0.75 2 0.75
LOAD COMB 119 D+0.75WZ-+0.75LR
1 1.0 10 0.75 2 0.75
LOAD COMB 120 D+0.75WX++0.75LR2
1 1.0 7 0.75 3 0.75
LOAD COMB 121 D+0.75WX-+0.75LR2
1 1.0 8 0.75 3 0.75
LOAD COMB 122 D+0.75WZ++0.75LR2
1 1.0 9 0.75 3 0.75
LOAD COMB 123 D+0.75WZ-+0.75LR2
1 1.0 10 0.75 3 0.75
LOAD COMB 124 D+0.75EX++0.75LR
1 1.0 15 0.75 2 0.75
LOAD COMB 125 D+0.75EX-+0.75LR
1 1.0 16 0.75 2 0.75
LOAD COMB 126 D+0.75EZ++0.75LR
1 1.0 17 0.75 2 0.75
LOAD COMB 127 D+0.75EZ-+0.75LR
1 1.0 18 0.75 2 0.75
LOAD COMB 128 D+0.75EX++0.75LR2
1 1.0 15 0.75 3 0.75
LOAD COMB 129 D+0.75EX-+0.75LR2
1 1.0 16 0.75 3 0.75
LOAD COMB 130 D+0.75EZ++0.75LR2
1 1.0 17 0.75 3 0.75
LOAD COMB 131 D+0.75EZ-+0.75LR2
1 1.0 18 0.75 3 0.75
LOAD COMB 132 D+0.75WX++0.75S
1 1.0 7 0.75 4 0.75 5 0.75
LOAD COMB 133 D+0.75WX-+0.75S
1 1.0 8 0.75 4 0.75 5 0.75
LOAD COMB 134 D+0.75WZ++0.75S
1 1.0 9 0.75 4 0.75 5 0.75
LOAD COMB 135 D+0.75WZ-+0.75S
1 1.0 10 0.75 4 0.75 5 0.75
LOAD COMB 136 D+0.525EX++0.75S
1 1.0 15 0.525 4 0.75 5 0.75
LOAD COMB 137 D+0.525EX-+0.75S
1 1.0 16 0.525 4 0.75 5 0.75
LOAD COMB 138 D+0.525EZ++0.75S
1 1.0 17 0.525 4 0.75 5 0.75
LOAD COMB 139 D+0.525EZ-+0.75S
1 1.0 18 0.525 4 0.75 5 0.75
LOAD COMB 140 0.6D+WX+
1 0.6 7 1.0
LOAD COMB 141 0.6D+WX-
1 0.6 8 1.0
LOAD COMB 142 0.6D+WZ+
1 0.6 9 1.0
LOAD COMB 143 0.6D+WZ-
1 0.6 10 1.0
LOAD COMB 144 0.6D+0.7EX+
1 0.6 15 0.7
LOAD COMB 145 0.6D+0.7EX-
1 0.6 16 0.7
LOAD COMB 146 0.6D+0.7EZ+
1 0.6 17 0.7
LOAD COMB 147 0.6D+0.7EZ-
1 0.6 18 0.7
LOAD COMB 201 D+0.7IL
1 1.0 6 0.7
LOAD COMB 202 D+0.7IL+0.7WILX++S
1 1.0 6 0.7 11 0.7 4 1.0 5 1.0
LOAD COMB 203 D+0.7IL+0.7WILX-+S
1 1.0 6 0.7 12 0.7 4 1.0 5 1.0
LOAD COMB 204 D+0.7IL+0.7WILZ++S
1 1.0 6 0.7 13 0.7 4 1.0 5 1.0
LOAD COMB 205 D+0.7IL+0.7WILZ-+S
1 1.0 6 0.7 14 0.7 4 1.0 5 1.0
LOAD COMB 206 D+0.7IL+0.7WILX+
1 1.0 6 0.7 11 0.7
LOAD COMB 207 D+0.7IL+0.7WILX-
1 1.0 6 0.7 12 0.7
LOAD COMB 208 D+0.7IL+0.7WILZ+
1 1.0 6 0.7 13 0.7
LOAD COMB 209 D+0.7IL+0.7WILZ-
1 1.0 6 0.7 14 0.7
LOAD COMB 301 1.4D
1 1.4
LOAD COMB 302 1.2D+0.5LR
1 1.2 2 0.5
LOAD COMB 303 1.2D+0.5LR2
1 1.2 3 0.5
LOAD COMB 304 1.2D+0.5S
1 1.2 4 0.5 5 0.5
LOAD COMB 305 1.2D+1.6LR+0.8WX+
1 1.2 2 1.6 7 0.8
LOAD COMB 306 1.2D+1.6LR+0.8WX-
1 1.2 2 1.6 8 0.8
LOAD COMB 307 1.2D+1.6LR+0.8WZ+
1 1.2 2 1.6 9 0.8
LOAD COMB 308 1.2D+1.6LR+0.8WZ-
1 1.2 2 1.6 10 0.8
LOAD COMB 309 1.2D+1.6LR2+0.8WX+
1 1.2 3 1.6 7 0.8
LOAD COMB 310 1.2D+1.6LR2+0.8WX-
1 1.2 3 1.6 8 0.8
LOAD COMB 311 1.2D+1.6LR2+0.8WZ+
1 1.2 3 1.6 9 0.8
LOAD COMB 312 1.2D+1.6LR2+0.8WZ-
1 1.2 3 1.6 10 0.8
LOAD COMB 313 1.2D+1.6S+0.8WX+
1 1.2 4 1.6 5 1.6 7 0.8
LOAD COMB 314 1.2D+1.6S+0.8WX-
1 1.2 4 1.6 5 1.6 8 0.8
LOAD COMB 315 1.2D+1.6S+0.8WZ+
1 1.2 4 1.6 5 1.6 9 0.8
LOAD COMB 316 1.2D+1.6S+0.8WZ-
1 1.2 4 1.6 5 1.6 10 0.8
LOAD COMB 317 1.2D+0.5LR+1.6WX+
1 1.2 2 0.5 7 1.6
LOAD COMB 318 1.2D+0.5LR+1.6WX-
1 1.2 2 0.5 8 1.6
LOAD COMB 319 1.2D+0.5LR+1.6WZ+
1 1.2 2 0.5 9 1.6
LOAD COMB 320 1.2D+0.5LR+1.6WZ-
1 1.2 2 0.5 10 1.6
LOAD COMB 321 1.2D+0.5LR2+1.6WX+
1 1.2 3 0.5 7 1.6
LOAD COMB 322 1.2D+0.5LR2+1.6WX-
1 1.2 3 0.5 8 1.6
LOAD COMB 323 1.2D+0.5LR2+1.6WZ+
1 1.2 3 0.5 9 1.6
LOAD COMB 324 1.2D+0.5LR2+1.6WZ-
1 1.2 3 0.5 10 1.6
LOAD COMB 325 1.2D+0.5S+1.6WX+
1 1.2 4 0.5 5 0.5 7 1.6
LOAD COMB 326 1.2D+0.5S+1.6WX-
1 1.2 4 0.5 5 0.5 8 1.6
LOAD COMB 327 1.2D+0.5S+1.6WZ+
1 1.2 4 0.5 5 0.5 9 1.6
LOAD COMB 328 1.2D+0.5S+1.6WZ-
1 1.2 4 0.5 5 0.5 10 1.6
LOAD COMB 329 1.2D+EX++0.2S
1 1.2 15 1.0 4 0.2 5 0.2
LOAD COMB 330 1.2D+EX-+0.2S
1 1.2 16 1.0 4 0.2 5 0.2
LOAD COMB 331 1.2D+EZ++0.2S
1 1.2 17 1.0 4 0.2 5 0.2
LOAD COMB 332 1.2D+EZ-+0.2S
1 1.0 18 1.0 4 1.0 5 1.0
LOAD COMB 333 0.9D+1.6WX+
1 0.9 7 1.6
LOAD COMB 334 0.9D+1.6WX-
1 0.9 8 1.6
LOAD COMB 335 0.9D+1.6WZ+
1 0.9 9 1.6
LOAD COMB 336 0.9D+1.6WZ-
1 0.9 10 1.6
LOAD COMB 337 0.9D+EX+
1 0.9 15 1.6
LOAD COMB 338 0.9D+EX-
1 0.9 16 1.6
LOAD COMB 339 0.9D+EZ+
1 0.9 17 1.6
LOAD COMB 340 0.9D+EZ-
1 0.9 18 1.6
LOAD COMB 401 1.2D+0.2I+0.5S
1 1.2 6 0.2 4 0.5 5 0.5
LOAD COMB 402 1.2D+I+WIX++0.5S
1 1.2 6 1.0 11 1.0 4 0.5 5 0.5
LOAD COMB 403 1.2D+I+WIX-+0.5S
1 1.2 6 1.0 12 1.0 4 0.5 5 0.5
LOAD COMB 404 1.2D+I+WIZ++0.5S
1 1.2 6 1.0 13 1.0 4 0.5 5 0.5
LOAD COMB 405 1.2D+I+WIZ-+0.5S
1 1.2 6 1.0 14 1.0 4 0.5 5 0.5
LOAD COMB 406 0.9D+I+WIX+
1 0.9 6 1.0 11 1.0
LOAD COMB 407 0.9D+I+WIX-
1 0.9 6 1.0 12 1.0
LOAD COMB 408 0.9D+I+WIZ+
1 0.9 6 1.0 13 1.0
LOAD COMB 409 0.9D+I+WIZ-
1 0.9 6 1.0 14 1.0
PERFORM ANALYSIS
DEFINE ENVELOPE
101 TO 147 201 TO 209 ENVELOPE 1 TYPE SERVICEABILITY
301 TO 340 401 TO 409 ENVELOPE 2 TYPE STRENGTH
END DEFINE ENVELOPE
LOAD LIST ENV 1 2
PARAMETER 1
CODE AISC UNIFIED 2010
METHOD LRFD
FYLD 6.624e+006 MEMB 3 4 12 13 18 19 71 72
TORSION 1 MEMB 5 6 26 27 30 TO 34 36 TO 40 73 TO 76
FYLD 5.184e+006 MEMB 1 2 5 TO 11 20 TO 34 36 TO 70 73 TO 76
FU 8.352e+006 ALL
DJ2 12 MEMB 6 27
DJ1 30 MEMB 6 27
DJ2 11 MEMB 5 26
DJ1 29 MEMB 5 26
DJ2 24 MEMB 32 38 73
DJ1 31 MEMB 32 38 73
DJ2 29 MEMB 31 34 37
DJ1 23 MEMB 31 34 37
DJ2 29 MEMB 39 40 76
DJ1 31 MEMB 39 40 76
DFF 360 ALL
LY 12 MEMB 31 34 37
LY 18 MEMB 32 38 73
CHECK CODE ALL
FINISH

Master Slave Joint Question

Sal — Wed, 19 Jun 2019 21:58:08 GMT

Hello,

I have a frame in which a unit is sitting on 2 beams (Beam 35 and Span of Beam 36) and a walking platform is besides that unit. So the beams will act like a rigid frame. In my model I have defined only 4 joints on one beam as master slaves and almost 5 joints on other beam as master slaves. The unity ratio for both beams came out different. I was expecting staad to consider those nodes to take full beam as rigid but that's not how it's behaving.

If I define more nodes in beam 35 and assign those new nodes as slave nodes while maintaining Lz, Ly, UNB factors same as those when there were less nodes, Beam 35 is showing much lesser unity ratio. There is something wrong in my methodology. Can someone please see the code and let me know if the application of slave nodes in Beam 35 is right or wrong. Should I increase more nodes on that beam to make it act like rigid?

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 19-Apr-19
END JOB INFORMATION
INPUT WIDTH 79
UNIT FEET KIP
JOINT COORDINATES
1 0 0 -13.1664; 2 0 0 0; 3 0 2.5 -13.1664; 4 0 2.5 0; 5 0 3 -13.1664; 6 0 3 -5;
7 0 3 0; 8 0 4 -13.1664; 9 0 4 -5; 10 0 4 0; 11 0 5.75 -5; 12 0 5.75 0;
13 0 7.5 -5; 14 0 7.5 0; 15 0.75 4 -13.1664; 16 0.75 4 0; 17 6.99983 4 -5;
18 6.99983 4 0; 19 6.99992 5.75 0; 20 7 7.5 0; 21 13.9997 4 -5; 22 13.9997 4 0;
23 13.9998 5.75 0; 24 14 4 -9.083; 25 14 7.5 0; 26 20.9993 4 -5;
27 20.9993 4 0; 28 20.9997 5.75 0; 29 21 7.5 0; 30 27.25 4 -13.1664;
31 27.25 4 0; 32 28 0 -13.1664; 33 28 0 0; 34 28 2.5 -13.1664; 35 28 2.5 0;
36 28 3 -13.1664; 37 28 3 -5; 38 28 3 0; 39 28 4 -13.1664; 40 28 4 -5;
41 28 4 -2; 42 28 4 0; 43 28 5.75 -2; 44 28 5.75 0; 45 28 7.5 -2; 46 28 7.5 0;
47 31.75 0 -5; 48 31.75 0 -2; 49 31.75 3 -2; 50 31.75 3 -5; 51 28 7 -2;
52 28 7 -5; 54 28 7.5 -5; 55 31.75 1.5 -2; 56 28 5.5 -2; 57 31.75 1.5 -5;
58 28 5.5 -5;
MEMBER INCIDENCES
1 3 1; 2 4 2; 3 5 3; 4 7 4; 5 6 5; 6 7 6; 7 8 5; 8 9 6; 9 10 7; 10 9 10;
11 9 11; 12 10 12; 13 12 11; 14 11 13; 15 12 14; 16 14 13; 17 15 3; 18 16 4;
19 8 15; 20 10 16; 21 9 17; 22 19 12; 23 20 14; 24 16 18; 25 18 17; 26 18 19;
27 19 20; 28 17 21; 29 18 22; 30 23 19; 31 25 20; 32 22 21; 33 22 23; 34 23 25;
35 15 30; 36 21 26; 37 22 27; 38 28 23; 39 29 25; 40 27 26; 41 27 28; 42 28 29;
43 27 31; 44 26 40; 45 44 28; 46 46 29; 47 30 34; 48 31 35; 49 30 39; 50 31 42;
51 34 32; 52 35 33; 53 36 34; 54 38 35; 55 37 36; 56 38 37; 57 39 36; 58 40 37;
59 42 38; 60 40 41; 61 41 42; 62 41 56; 63 42 44; 64 43 44; 65 43 51; 66 44 46;
67 45 46; 68 40 47; 69 41 48; 70 49 55; 71 50 57; 72 49 51; 73 51 45; 74 50 52;
75 40 58; 76 52 58; 77 55 48; 78 56 43; 79 55 56; 80 57 47; 82 57 58; 83 52 54;
DEFINE MATERIAL START
ISOTROPIC STEEL
E 4.176e+006
POISSON 0.3
DENSITY 0.489024
ALPHA 6e-006
DAMP 0.03
TYPE STEEL
STRENGTH FY 5184 FU 8352 RY 1.5 RT 1.2
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
5 6 20 21 24 28 29 36 37 43 44 50 55 56 TABLE ST W12X26
10 25 32 40 60 61 TABLE ST C4X4
1 TO 4 51 TO 54 TABLE ST HSST6X6X0.375
MEMBER PROPERTY AMERICAN
7 TO 9 57 TO 59 PRIS YD 0.75 ZD 0.75
MEMBER PROPERTY AMERICAN
17 18 47 48 TABLE ST L40408
19 35 49 TABLE ST W18X35
68 69 TABLE ST MC10X8
11 TO 16 22 23 26 27 30 31 33 34 38 39 41 42 45 46 62 TO 67 70 TO 80 82 -
83 TABLE ST HSSP1.900X0.145
CONSTANTS
BETA 45 MEMB 17 18 47 48
BETA 180 MEMB 10 69
MATERIAL STEEL ALL
SUPPORTS
1 2 32 33 FIXED
47 48 PINNED
MEMBER RELEASE
6 10 19 TO 21 25 32 40 56 60 START MY MZ
5 7 9 10 25 32 40 49 50 55 57 59 61 END MY MZ
MEMBER TRUSS
17 18 47 48
SLAVE ZX MASTER 24 JOINT 8 9 15 17 21 26 30 39 40
LOAD 1 LOADTYPE Dead TITLE DL
SELFWEIGHT Y -1 LIST 1 TO 6 10 TO 56 60 TO 80 82 83
MEMBER LOAD
25 32 40 UNI GY -0.056
10 60 61 UNI GY -0.028
35 UNI GY -0.178
LOAD 2 LOADTYPE Roof Live TITLE LR
MEMBER LOAD
25 32 40 UNI GY -0.42
10 60 61 UNI GY -0.21
68 69 UNI GY -0.15
LOAD 3 LOADTYPE Roof Live TITLE LRCONC
MEMBER LOAD
25 32 40 UNI GY -0.42
10 60 61 UNI GY -0.21
68 CON GY -1 0.05
LOAD 4 LOADTYPE Snow TITLE SL
MEMBER LOAD
10 60 61 UNI GY -0.074
25 32 40 UNI GY -0.147
21 28 35 36 44 UNI GY -0.086
68 69 UNI GY -0.032
LOAD 5 LOADTYPE Snow TITLE SL DRIFT
MEMBER LOAD
25 32 40 LIN Y -0.053 -0.21
10 TRAP GY -0.105 -0.027
60 TRAP GY -0.105 -0.058
61 TRAP GY -0.058 -0.027
LOAD 6 LOADTYPE Ice TITLE IL
MEMBER LOAD
25 32 40 UNI GY -0.138
10 60 61 UNI GY -0.069
68 69 UNI GY -0.03
19 21 28 35 36 44 49 UNI GY -0.059
1 TO 4 51 TO 54 UNI GY -0.014
17 18 47 48 UNI GY -0.012
10 25 32 40 60 61 UNI GY -0.02
19 TO 21 24 28 29 35 TO 37 43 44 49 50 UNI GY -0.036
11 TO 16 22 23 26 27 30 31 33 34 38 39 41 42 45 46 62 TO 67 70 TO 80 82 -
83 UNI GY -0.0071
76 UNI GY -0.0071 1.25 1.5
76 UNI GY -0.0071 0 1.25
LOAD 7 LOADTYPE Wind TITLE WIND +X
MEMBER LOAD
19 21 28 35 36 44 49 UMOM GZ -0.65
19 21 28 35 36 44 49 UNI GX 0.1737
5 6 19 TO 21 24 28 29 35 TO 37 43 44 49 50 UNI GX 0.0584
1 TO 4 UNI GX 0.0195
10 UNI GX 0.0195
68 69 UNI GX 0.0057
LOAD 8 LOADTYPE Wind TITLE WIND -X
MEMBER LOAD
19 21 28 35 36 44 49 UMOM GZ 0.65
19 21 28 35 36 44 49 UNI GX -0.1737
19 TO 21 24 28 29 35 TO 37 43 44 49 50 55 56 UNI GX -0.0584
51 TO 54 UNI GX -0.0195
60 61 UNI GX -0.0195
68 69 UNI GX -0.0057
LOAD 9 LOADTYPE Wind TITLE WIND +Z
MEMBER LOAD
19 21 28 35 36 44 49 UNI GZ 0.32
5 6 19 35 49 55 56 UNI GZ 0.0682
1 3 51 53 UNI GZ 0.0227
17 47 UNI GZ 0.0227
68 UNI GZ 0.0568
19 35 49 UNI GY 0.04
21 28 36 44 UNI GY -0.04
LOAD 10 LOADTYPE Wind TITLE WIND -Z
MEMBER LOAD
19 21 28 35 36 44 49 UNI GZ -0.32
5 6 20 24 29 37 43 50 55 56 UNI GZ -0.0682
2 4 52 54 UNI GZ -0.0227
18 48 UNI GZ -0.0227
69 UNI GZ -0.0568
21 28 36 44 UNI GY 0.04
19 35 49 UNI GY -0.04
LOAD 11 LOADTYPE Wind on Ice TITLE WIL+X
MEMBER LOAD
5 6 19 TO 21 24 28 29 35 TO 37 43 44 49 50 UNI GX 0.0152
1 TO 4 UNI GX 0.0071
10 UNI GX 0.0091
68 69 UNI GX 0.0042
LOAD 12 LOADTYPE Wind on Ice TITLE WIL-X
MEMBER LOAD
19 TO 21 24 28 29 35 TO 37 43 44 49 50 55 56 UNI GX -0.0152
51 TO 54 UNI GX -0.0071
60 61 UNI GX -0.0091
68 69 UNI GX -0.0042
LOAD 13 LOADTYPE Wind on Ice TITLE WIL+Z
MEMBER LOAD
5 6 19 35 49 55 56 UNI GZ 0.0177
1 3 51 53 UNI GZ 0.0083
17 47 UNI GZ 0.0083
68 UNI GZ 0.0153
LOAD 14 LOADTYPE Wind on Ice TITLE WIL-Z
MEMBER LOAD
5 6 20 24 29 37 43 50 55 56 UNI GZ -0.0177
2 4 52 54 UNI GZ -0.0083
18 48 UNI GZ -0.0083
69 UNI GZ -0.0153
LOAD 15 LOADTYPE Seismic TITLE EL+X
NOTIONAL LOAD
1 X 0.02
LOAD 16 LOADTYPE Seismic TITLE EL-X
NOTIONAL LOAD
1 X -0.02
LOAD 17 LOADTYPE Seismic TITLE EL+Z
NOTIONAL LOAD
1 Z 0.002
LOAD 18 LOADTYPE Seismic TITLE EL-Z
NOTIONAL LOAD
1 Z -0.02
LOAD 19 LOADTYPE Temperature TITLE TEMP+
LOAD 20 LOADTYPE Temperature TITLE TEMP-
LOAD COMB 101 D
1 1.0
LOAD COMB 102 D+LR
1 1.0 2 1.0
LOAD COMB 103 D+LR2
1 1.0 3 1.0
LOAD COMB 104 D+S
1 1.0 4 1.0 5 1.0
LOAD COMB 105 D+0.75LR
1 1.0 2 0.75
LOAD COMB 106 D+0.75LR2
1 1.0 3 0.75
LOAD COMB 107 D+0.75S
1 1.0 4 0.75 5 0.75
LOAD COMB 108 D+WX+
1 1.0 7 1.0
LOAD COMB 109 D+WX-
1 1.0 8 1.0
LOAD COMB 110 D+WZ+
1 1.0 9 1.0
LOAD COMB 111 D+WZ-
1 1.0 10 1.0
LOAD COMB 112 D+0.7EX+
1 1.0 15 0.7
LOAD COMB 113 D+0.7EX-
1 1.0 16 0.7
LOAD COMB 114 D+0.7EZ+
1 1.0 17 0.7
LOAD COMB 115 D+0.7EZ-
1 1.0 18 0.7
LOAD COMB 116 D+0.75WX++0.75LR
1 1.0 7 0.75 2 0.75
LOAD COMB 117 D+0.75WX-+0.75LR
1 1.0 8 0.75 2 0.75
LOAD COMB 118 D+0.75WZ++0.75LR
1 1.0 9 0.75 2 0.75
LOAD COMB 119 D+0.75WZ-+0.75LR
1 1.0 10 0.75 2 0.75
LOAD COMB 120 D+0.75WX++0.75LR2
1 1.0 7 0.75 3 0.75
LOAD COMB 121 D+0.75WX-+0.75LR2
1 1.0 8 0.75 3 0.75
LOAD COMB 122 D+0.75WZ++0.75LR2
1 1.0 9 0.75 3 0.75
LOAD COMB 123 D+0.75WZ-+0.75LR2
1 1.0 10 0.75 3 0.75
LOAD COMB 124 D+0.75EX++0.75LR
1 1.0 15 0.75 2 0.75
LOAD COMB 125 D+0.75EX-+0.75LR
1 1.0 16 0.75 2 0.75
LOAD COMB 126 D+0.75EZ++0.75LR
1 1.0 17 0.75 2 0.75
LOAD COMB 127 D+0.75EZ-+0.75LR
1 1.0 18 0.75 2 0.75
LOAD COMB 128 D+0.75EX++0.75LR2
1 1.0 15 0.75 3 0.75
LOAD COMB 129 D+0.75EX-+0.75LR2
1 1.0 16 0.75 3 0.75
LOAD COMB 130 D+0.75EZ++0.75LR2
1 1.0 17 0.75 3 0.75
LOAD COMB 131 D+0.75EZ-+0.75LR2
1 1.0 18 0.75 3 0.75
LOAD COMB 132 D+0.75WX++0.75S
1 1.0 7 0.75 4 0.75 5 0.75
LOAD COMB 133 D+0.75WX-+0.75S
1 1.0 8 0.75 4 0.75 5 0.75
LOAD COMB 134 D+0.75WZ++0.75S
1 1.0 9 0.75 4 0.75 5 0.75
LOAD COMB 135 D+0.75WZ-+0.75S
1 1.0 10 0.75 4 0.75 5 0.75
LOAD COMB 136 D+0.525EX++0.75S
1 1.0 15 0.525 4 0.75 5 0.75
LOAD COMB 137 D+0.525EX-+0.75S
1 1.0 16 0.525 4 0.75 5 0.75
LOAD COMB 138 D+0.525EZ++0.75S
1 1.0 17 0.525 4 0.75 5 0.75
LOAD COMB 139 D+0.525EZ-+0.75S
1 1.0 18 0.525 4 0.75 5 0.75
LOAD COMB 140 0.6D+WX+
1 0.6 7 1.0
LOAD COMB 141 0.6D+WX-
1 0.6 8 1.0
LOAD COMB 142 0.6D+WZ+
1 0.6 9 1.0
LOAD COMB 143 0.6D+WZ-
1 0.6 10 1.0
LOAD COMB 144 0.6D+0.7EX+
1 0.6 15 0.7
LOAD COMB 145 0.6D+0.7EX-
1 0.6 16 0.7
LOAD COMB 146 0.6D+0.7EZ+
1 0.6 17 0.7
LOAD COMB 147 0.6D+0.7EZ-
1 0.6 18 0.7
LOAD COMB 201 D+0.7IL
1 1.0 6 0.7
LOAD COMB 202 D+0.7IL+0.7WILX++S
1 1.0 6 0.7 11 0.7 4 1.0 5 1.0
LOAD COMB 203 D+0.7IL+0.7WILX-+S
1 1.0 6 0.7 12 0.7 4 1.0 5 1.0
LOAD COMB 204 D+0.7IL+0.7WILZ++S
1 1.0 6 0.7 13 0.7 4 1.0 5 1.0
LOAD COMB 205 D+0.7IL+0.7WILZ-+S
1 1.0 6 0.7 14 0.7 4 1.0 5 1.0
LOAD COMB 206 D+0.7IL+0.7WILX+
1 1.0 6 0.7 11 0.7
LOAD COMB 207 D+0.7IL+0.7WILX-
1 1.0 6 0.7 12 0.7
LOAD COMB 208 D+0.7IL+0.7WILZ+
1 1.0 6 0.7 13 0.7
LOAD COMB 209 D+0.7IL+0.7WILZ-
1 1.0 6 0.7 14 0.7
LOAD COMB 301 1.4D
1 1.4
LOAD COMB 302 1.2D+0.5LR
1 1.2 2 0.5
LOAD COMB 303 1.2D+0.5LR2
1 1.2 3 0.5
LOAD COMB 304 1.2D+0.5S
1 1.2 4 0.5 5 0.5
LOAD COMB 305 1.2D+1.6LR+0.8WX+
1 1.2 2 1.6 7 0.8
LOAD COMB 306 1.2D+1.6LR+0.8WX-
1 1.2 2 1.6 8 0.8
LOAD COMB 307 1.2D+1.6LR+0.8WZ+
1 1.2 2 1.6 9 0.8
LOAD COMB 308 1.2D+1.6LR+0.8WZ-
1 1.2 2 1.6 10 0.8
LOAD COMB 309 1.2D+1.6LR2+0.8WX+
1 1.2 3 1.6 7 0.8
LOAD COMB 310 1.2D+1.6LR2+0.8WX-
1 1.2 3 1.6 8 0.8
LOAD COMB 311 1.2D+1.6LR2+0.8WZ+
1 1.2 3 1.6 9 0.8
LOAD COMB 312 1.2D+1.6LR2+0.8WZ-
1 1.2 3 1.6 10 0.8
LOAD COMB 313 1.2D+1.6S+0.8WX+
1 1.2 4 1.6 5 1.6 7 0.8
LOAD COMB 314 1.2D+1.6S+0.8WX-
1 1.2 4 1.6 5 1.6 8 0.8
LOAD COMB 315 1.2D+1.6S+0.8WZ+
1 1.2 4 1.6 5 1.6 9 0.8
LOAD COMB 316 1.2D+1.6S+0.8WZ-
1 1.2 4 1.6 5 1.6 10 0.8
LOAD COMB 317 1.2D+0.5LR+1.6WX+
1 1.2 2 0.5 7 1.6
LOAD COMB 318 1.2D+0.5LR+1.6WX-
1 1.2 2 0.5 8 1.6
LOAD COMB 319 1.2D+0.5LR+1.6WZ+
1 1.2 2 0.5 9 1.6
LOAD COMB 320 1.2D+0.5LR+1.6WZ-
1 1.2 2 0.5 10 1.6
LOAD COMB 321 1.2D+0.5LR2+1.6WX+
1 1.2 3 0.5 7 1.6
LOAD COMB 322 1.2D+0.5LR2+1.6WX-
1 1.2 3 0.5 8 1.6
LOAD COMB 323 1.2D+0.5LR2+1.6WZ+
1 1.2 3 0.5 9 1.6
LOAD COMB 324 1.2D+0.5LR2+1.6WZ-
1 1.2 3 0.5 10 1.6
LOAD COMB 325 1.2D+0.5S+1.6WX+
1 1.2 4 0.5 5 0.5 7 1.6
LOAD COMB 326 1.2D+0.5S+1.6WX-
1 1.2 4 0.5 5 0.5 8 1.6
LOAD COMB 327 1.2D+0.5S+1.6WZ+
1 1.2 4 0.5 5 0.5 9 1.6
LOAD COMB 328 1.2D+0.5S+1.6WZ-
1 1.2 4 0.5 5 0.5 10 1.6
LOAD COMB 329 1.2D+EX++0.2S
1 1.2 15 1.0 4 0.2 5 0.2
LOAD COMB 330 1.2D+EX-+0.2S
1 1.2 16 1.0 4 0.2 5 0.2
LOAD COMB 331 1.2D+EZ++0.2S
1 1.2 17 1.0 4 0.2 5 0.2
LOAD COMB 332 1.2D+EZ-+0.2S
1 1.0 18 1.0 4 1.0 5 1.0
LOAD COMB 333 0.9D+1.6WX+
1 0.9 7 1.6
LOAD COMB 334 0.9D+1.6WX-
1 0.9 8 1.6
LOAD COMB 335 0.9D+1.6WZ+
1 0.9 9 1.6
LOAD COMB 336 0.9D+1.6WZ-
1 0.9 10 1.6
LOAD COMB 337 0.9D+EX+
1 0.9 15 1.6
LOAD COMB 338 0.9D+EX-
1 0.9 16 1.6
LOAD COMB 339 0.9D+EZ+
1 0.9 17 1.6
LOAD COMB 340 0.9D+EZ-
1 0.9 18 1.6
LOAD COMB 401 1.2D+0.2I+0.5S
1 1.2 6 0.2 4 0.5 5 0.5
LOAD COMB 402 1.2D+I+WIX++0.5S
1 1.2 6 1.0 11 1.0 4 0.5 5 0.5
LOAD COMB 403 1.2D+I+WIX-+0.5S
1 1.2 6 1.0 12 1.0 4 0.5 5 0.5
LOAD COMB 404 1.2D+I+WIZ++0.5S
1 1.2 6 1.0 13 1.0 4 0.5 5 0.5
LOAD COMB 405 1.2D+I+WIZ-+0.5S
1 1.2 6 1.0 14 1.0 4 0.5 5 0.5
LOAD COMB 406 0.9D+I+WIX+
1 0.9 6 1.0 11 1.0
LOAD COMB 407 0.9D+I+WIX-
1 0.9 6 1.0 12 1.0
LOAD COMB 408 0.9D+I+WIZ+
1 0.9 6 1.0 13 1.0
LOAD COMB 409 0.9D+I+WIZ-
1 0.9 6 1.0 14 1.0
PERFORM ANALYSIS
DEFINE ENVELOPE
101 TO 147 201 TO 209 ENVELOPE 1 TYPE SERVICEABILITY
301 TO 340 401 TO 409 ENVELOPE 2 TYPE STRENGTH
END DEFINE ENVELOPE
LOAD LIST ENV 1 2
PARAMETER 1
CODE AISC UNIFIED 2010
METHOD LRFD
FU 9360 MEMB 5 6 19 TO 21 24 28 29 35 TO 37 43 44 49 50 55 56
FU 8352 MEMB 1 TO 4 10 TO 18 22 23 25 TO 27 30 TO 32 38 TO 42 45 TO 48 51 -
52 TO 54 60 61 63 TO 77 79 80 82 83
FYLD 7200 MEMB 5 6 19 TO 21 24 28 29 35 TO 37 43 44 49 50 55 56
FYLD 6624 MEMB 1 TO 4 51 TO 54
FYLD 5184 MEMB 1 TO 4 10 TO 18 22 23 25 TO 27 30 TO 32 38 TO 42 45 TO 48 51 -
52 TO 54 60 61 63 TO 77 79 80 82 83
DJ2 8 MEMB 19 35 49
DJ1 39 MEMB 19 35 49
DJ2 36 MEMB 51 53
DJ1 32 MEMB 51 53
DJ2 1 MEMB 1 3
DJ1 5 MEMB 1 3
DJ2 36 MEMB 55 56
DJ1 38 MEMB 55 56
DJ2 5 MEMB 5 6
DJ1 7 MEMB 5 6
DJ2 40 MEMB 60 61
DJ1 42 MEMB 60 61
DJ2 9 MEMB 21 28 36 44
DJ1 40 MEMB 21 28 36 44
DJ2 33 MEMB 52 54
DJ1 38 MEMB 52 54
DJ2 2 MEMB 2 4
DJ1 7 MEMB 2 4
DJ2 10 MEMB 20 24 29 37 43 50
DJ1 42 MEMB 20 24 29 37 43 50
DFF 360 MEMB 1 TO 6 10 TO 56 60 TO 80 82 83
UNT 0 MEMB 19 21 28 35 36 44 49
TRACK 2 MEMB 35 68
LZ 7 MEMB 20 21 24 28 29 36 37 43 44 50
CHECK CODE MEMB 1 TO 6 10 TO 56 60 TO 80 82 83
FINISH

Torsion for Dead Load?

Sal — Wed, 19 Jun 2019 15:20:31 GMT

Hello,

I have a very simple model in STAAD right now. I don't understand why STAAD is showing Torsion in some members even for Load Case 1 which is a Dead Load case. Can someone please explain this.

Thanks

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 18-Jun-19
END JOB INFORMATION
INPUT WIDTH 79
UNIT FEET KIP
JOINT COORDINATES
1 0 0 0; 2 6.5 0 0; 3 6.5 0 6.5; 4 0 0 6.5; 5 0 12.5 0; 6 0 12.5 6.5;
7 6.5 9.5 0; 8 6.5 9.5 6.5; 9 0 8 0; 10 0 8 6.5; 11 6.5 8 0; 12 6.5 8 6.5;
13 -0.25 0 6.5; 14 -0.25 0 0; 15 6.75 0 0; 16 6.75 0 6.5; 17 0 3 0; 18 0 3 6.5;
19 6.5 3 6.5; 20 6.5 3 0;
MEMBER INCIDENCES
1 1 2; 3 4 3; 5 5 9; 6 6 10; 7 2 20; 8 3 19; 9 5 7; 10 6 8; 11 7 8; 12 5 6;
13 10 18; 14 11 7; 15 12 8; 16 9 10; 17 10 12; 18 11 12; 19 9 11; 20 9 17;
21 14 1; 22 13 4; 23 2 15; 24 3 16; 25 17 1; 26 18 4; 27 17 18; 28 19 12;
29 18 19; 30 20 11; 31 20 19; 32 17 20;
DEFINE MATERIAL START
ISOTROPIC STEEL
E 4.176e+006
POISSON 0.3
DENSITY 0.489024
ALPHA 6e-006
DAMP 0.03
TYPE STEEL
STRENGTH FY 5184 FU 8352 RY 1.5 RT 1.2
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
1 3 21 TO 24 TABLE ST W10X22
5 TO 8 13 TO 20 25 TO 32 TABLE ST HSST3X3X0.375
9 TO 12 TABLE ST HSSP1.660X0.14
CONSTANTS
MATERIAL STEEL ALL
SUPPORTS
13 TO 16 PINNED
LOAD 1 LOADTYPE Dead TITLE DEAD
SELFWEIGHT Y -1 LIST 1 3 5 TO 8 13 TO 32
MEMBER LOAD
16 TO 19 27 29 31 32 UNI GY -0.01625
LOAD 2 LOADTYPE Snow TITLE SNOW SLOPE
JOINT LOAD
5 TO 8 FY -0.2
LOAD 3 LOADTYPE Ice TITLE ICE
JOINT LOAD
5 TO 8 FY -0.152
LOAD 4 LOADTYPE Wind TITLE WINDX+
MEMBER LOAD
5 6 13 16 20 25 TO 27 UNI GX 0.01
1 3 UNI GX 0.21
1 3 UMOM GZ -1.12
LOAD 5 LOADTYPE Wind TITLE WINDX-
MEMBER LOAD
7 8 14 15 18 28 30 31 UNI GX -0.01
1 3 UNI GX -0.21
1 3 UMOM GZ 1.12
LOAD 6 LOADTYPE Wind TITLE WINDZ+
MEMBER LOAD
5 7 14 19 20 25 30 32 UNI GZ 0.01
1 3 UNI GZ 0.22
1 3 UMOM GX 1.21
LOAD 7 LOADTYPE Wind TITLE WINDZ-
MEMBER LOAD
6 8 13 15 17 26 28 29 UNI GZ -0.01
1 3 UNI GZ -0.22
1 3 UMOM GX -1.21
LOAD COMB 11 1.4D
1 1.4
LOAD COMB 12 1.2D+0.5S
1 1.2 3 0.5
LOAD COMB 13 1.2D+1.6S+0.8WX+
1 1.2 2 1.6 4 0.8
LOAD COMB 14 1.2D+1.6S+0.8WX-
1 1.2 2 1.6 5 0.8
LOAD COMB 15 1.2D+1.6S+0.8WZ+
1 1.2 2 1.6 6 0.8
LOAD COMB 16 1.2D+1.6S+0.8WZ-
1 1.2 2 1.6 7 0.8
LOAD COMB 17 1.2D+1.6WX++0.5S
1 1.2 4 1.6 2 0.5
LOAD COMB 18 1.2D+1.6WX-+0.5S
1 1.2 5 1.6 2 0.5
LOAD COMB 19 1.2D+1.6WZ++0.5S
1 1.2 6 1.6 2 0.5
LOAD COMB 20 1.2D+1.6WZ-+0.5S
1 1.2 7 1.6 2 0.5
LOAD COMB 21 1.2D+0.2S
1 1.2 3 0.2
LOAD COMB 22 0.9D+1.6WX+
1 0.9 4 1.6
LOAD COMB 23 0.9D+1.6WX-
1 0.9 5 1.6
LOAD COMB 24 0.9D+1.6WZ+
1 0.9 6 1.6
LOAD COMB 25 0.9D+1.6WZ-
1 0.9 7 1.6
LOAD COMB 26 0.9D
1 0.9
LOAD COMB 31 1.2D+0.2I+0.5S
1 1.2 3 0.2 2 0.5
LOAD COMB 32 1.2D+I+0.5S
1 1.2 3 1.6 2 0.5
LOAD COMB 33 0.9D+I
1 0.9 3 1.0
LOAD COMB 41 D
1 1.0
LOAD COMB 42 D+S
1 1.0 2 1.0
LOAD COMB 43 D+0.75S
1 1.0 2 0.75
LOAD COMB 44 D+WX+
1 1.0 4 1.0
LOAD COMB 45 D+WX-
1 1.0 5 1.0
LOAD COMB 46 D+WZ+
1 1.0 6 1.0
LOAD COMB 47 D+WZ-
1 1.0 7 1.0
LOAD COMB 48 D+0.75WX++0.75S
1 1.0 4 0.75 2 0.75
LOAD COMB 49 D+0.75WX-+0.75S
1 1.0 5 0.75 2 0.75
LOAD COMB 50 D+0.75WZ++0.75S
1 1.0 6 0.75 2 0.75
LOAD COMB 51 D+0.75WZ-+0.75S
1 1.0 7 0.75 2 0.75
LOAD COMB 52 0.6D+WX+
1 0.6 4 1.0
LOAD COMB 53 0.6D+WX-
1 0.6 5 1.0
LOAD COMB 54 0.6D+WZ+
1 0.6 6 1.0
LOAD COMB 55 0.6D+WZ-
1 0.6 7 1.0
LOAD COMB 56 0.6D
1 0.6
LOAD COMB 61 D+0.7I
1 1.0 3 0.7
LOAD COMB 62 D+0.7I+S
1 1.0 3 0.7 2 1.0
LOAD COMB 63 0.6D+0.7I
1 0.6 3 0.7
PERFORM ANALYSIS
DEFINE ENVELOPE
41 TO 56 61 TO 63 ENVELOPE 1 TYPE SERVICEABILITY
11 TO 26 31 TO 33 ENVELOPE 2 TYPE STRENGTH
END DEFINE ENVELOPE
LOAD LIST ENV 1 2
PARAMETER 1
CODE AISC UNIFIED 2010
METHOD LRFD
FYLD 6624 MEMB 5 TO 8 13 15 TO 20 25 TO 32
FYLD 7200 MEMB 1 3 21 TO 24
FU 8352 MEMB 5 TO 8 13 15 TO 20 25 TO 32
FU 9360 MEMB 1 3 21 TO 24
RATIO 0.8 MEMB 1 3 5 TO 8 13 TO 32
DJ2 1 MEMB 5 20 25
DJ1 5 MEMB 5 20 25
DJ2 4 MEMB 6 13 26
DJ1 6 MEMB 6 13 26
DJ2 3 MEMB 8 15 28
DJ1 8 MEMB 8 15 28
DJ2 2 MEMB 7 14 30
DJ1 7 MEMB 7 14 30
DJ2 16 MEMB 3 22 24
DJ1 13 MEMB 3 22 24
DJ2 15 MEMB 1 21 23
DJ1 14 MEMB 1 21 23
DFF 360 MEMB 1 3 5 TO 8 13 TO 32
LZ 5 MEMB 5 TO 8 13 TO 15 20 25 26 28 30
LY 5 MEMB 5 TO 8 13 TO 15 20 25 26 28 30
UNT 0 MEMB 9 TO 12
CHECK CODE MEMB 1 3 5 TO 8 13 TO 32
FINISH

STAAD MODEL ENVELOPE CRITERIA

Sal — Mon, 17 Jun 2019 20:39:32 GMT

Hello,

I have defined 2 envelopes in my model. One for Deflection check and one for Strength. For some reason, STAAD is reporting unity ratio worst for deflection check instead of strength. Can you please let me know how to command STAAD to only check deflection for service envelope.

Thanks

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 1-JUNE-19
JOB NAME Harmon
JOB REF RTU-02 Platform
END JOB INFORMATION
INPUT WIDTH 79
UNIT INCHES POUND
JOINT COORDINATES
1 -132 -12 -36; 2 -132 -12 24; 3 -60 -12 -36; 4 -59.9964 -12 24; 5 12 -12 -36;
6 12.0036 -12 24; 7 84 -12 -36; 8 84 -12 24; 9 137.996 -12 -36;
10 137.996 -12 0; 11 192 -12 -36; 12 192 -12 0; 13 192 6 -36; 14 192 6 0;
15 192 24 -36; 16 192 24 0; 17 137.996 41.996 -36; 18 137.996 41.996 0;
19 137.996 59.996 -36; 20 137.996 59.996 0; 21 137.996 77.996 -36;
22 137.996 77.996 0; 23 -132 96 -36; 24 -132 96 24; 25 -60 96 -36;
26 -60 96 24; 27 12 96 -36; 28 12.0036 96 24; 29 84 96 -36; 30 84 96 0;
31 84 96 24; 32 84 114 -36; 33 84 114 0; 34 -132 117 -36; 35 -132 117 24;
36 -60 117 -36; 37 12 117 -36; 38 84 117 -36; 39 84 132 -36; 40 84 132 0;
41 -132 138 -36; 42 -132 138 24; 43 -60 138 -36; 44 12 138 -36; 45 84 138 -36;
46 84 138 0; 47 84 117 24; 48 84 138 24; 49 84 117 0;
MEMBER INCIDENCES
1 11 13; 2 12 14; 3 9 17; 4 10 18; 5 17 11; 6 18 12; 7 13 15; 8 14 16; 9 13 19;
10 20 14; 11 17 18; 12 1 23; 13 2 24; 14 3 25; 15 4 26; 16 5 27; 17 6 28;
18 7 29; 19 8 31; 20 17 19; 21 18 20; 22 15 21; 23 16 22; 24 19 21; 25 20 22;
26 29 17; 27 30 18; 28 32 19; 29 33 20; 30 23 24; 31 23 25; 32 24 26; 33 25 26;
34 25 27; 35 26 28; 36 27 28; 37 27 29; 38 28 31; 39 30 29; 40 31 30; 41 21 39;
42 22 40; 43 29 32; 44 30 33; 45 23 34; 46 24 35; 47 25 36; 48 27 37; 49 32 38;
50 34 35; 51 36 34; 52 37 36; 53 38 37; 54 33 49; 55 38 39; 56 34 41; 57 35 42;
58 36 43; 59 37 44; 60 39 45; 61 40 46; 62 41 42; 63 43 41; 64 44 43; 65 45 44;
66 31 47; 67 47 48; 68 48 46; 69 49 40; 70 47 49;
MEMBER RELEASE
11 30 33 36 40 START MY MZ
11 30 33 36 39 END MY MZ
DEFINE MATERIAL START
ISOTROPIC STEEL
E 2.9e+007
POISSON 0.3
DENSITY 0.283
ALPHA 6e-006
DAMP 0.03
TYPE STEEL
STRENGTH FY 36000 FU 58000 RY 1.5 RT 1.2
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
1 2 7 TO 10 20 TO 25 28 29 41 TO 70 TABLE ST HSSP1.900X0.12
3 4 12 TO 19 TABLE ST HSST2X2X0.125
5 6 26 27 TABLE ST MC10X8
11 30 TO 40 TABLE ST C3X5
CONSTANTS
BETA 180 MEMB 6 27 30 32 35 38 TO 40
MATERIAL STEEL ALL
SUPPORTS
24 26 28 31 FIXED BUT FX FY MX MY MZ
1 TO 12 FIXED
LOAD 1 LOADTYPE Dead TITLE DEAD
SELFWEIGHT Y -1
UNIT FEET POUND
MEMBER LOAD
33 36 UNI GY -48
30 39 UNI GY -24
5 6 26 27 UNI GY -12
LOAD 2 LOADTYPE Roof Live TITLE LIVE ROOF
MEMBER LOAD
33 36 UNI GY -360
30 39 40 UNI GY -180
5 6 26 27 UNI GY -150
LOAD 3 LOADTYPE Roof Live REDUCIBLE TITLE LIVE STAIR CONC 1000 LBS
MEMBER LOAD
11 CON GY -1000 0.05
33 36 UNI GY -360
30 39 40 UNI GY -180
LOAD 4 LOADTYPE Snow TITLE SNOW BALANCED
MEMBER LOAD
33 36 UNI GY -126
30 39 40 UNI GY -63
5 6 26 27 UNI GY -31.5
LOAD 5 LOADTYPE Snow TITLE SNOW DRIFT
MEMBER LOAD
30 TRAP GY -22.56 -89.68
33 36 TRAP GY -45.11 -179.36
39 TRAP GY -62.83 -22.56
40 TRAP GY -89.68 -62.83
LOAD 6 LOADTYPE Ice TITLE ICE
MEMBER LOAD
33 36 UNI GY -119.3
30 39 40 UNI GY -59.65
5 6 26 27 UNI GY -29.83
3 4 12 TO 19 UNI GY -13.85
11 30 TO 40 UNI GY -13.05
5 6 26 27 UNI GY -23.21
1 2 7 TO 10 20 TO 25 27 TO 29 41 TO 48 50 TO 53 55 TO 59 62 TO 70 UNI GY -6.96
LOAD 7 LOADTYPE Wind TITLE WIND X
MEMBER LOAD
6 27 UNI GX 7.71
12 13 UNI GX 19.76
11 30 UNI GX 26.34
LOAD 8 LOADTYPE Wind TITLE WIND -X
MEMBER LOAD
5 6 26 27 UNI GX -7.71
3 4 18 19 UNI GX -19.76
11 39 40 UNI GX -26.34
LOAD 9 LOADTYPE Wind TITLE WIND Z
MEMBER LOAD
5 26 UNI GZ 69.59
3 12 14 16 18 UNI GZ 20.88
31 34 37 UNI GZ 27.84
LOAD 10 LOADTYPE Wind TITLE WIND -Z
MEMBER LOAD
6 27 UNI GZ -69.59
4 19 UNI GZ -20.88
LOAD 11 LOADTYPE Wind on Ice TITLE WIND ON ICE X
MEMBER LOAD
6 27 UNI GX 5.71
12 13 UNI GX 8.2
11 30 UNI GX 9.56
LOAD 12 LOADTYPE Wind on Ice TITLE WIND ON ICE -X
MEMBER LOAD
5 6 26 27 UNI GX -5.71
3 4 18 19 UNI GX -8.2
11 39 40 UNI GX -9.56
LOAD 13 LOADTYPE Wind on Ice TITLE WIND ON ICE Z
MEMBER LOAD
5 26 UNI GZ 18.73
3 12 14 16 18 UNI GZ 8.67
31 34 37 UNI GZ 10.1
LOAD 14 LOADTYPE Wind on Ice TITLE WIND ON ICE -Z
MEMBER LOAD
6 27 UNI GZ -18.75
4 19 UNI GZ -8.67
LOAD 15 LOADTYPE Seismic TITLE EL NOTIONAL X+
NOTIONAL LOAD
1 X 0.02
LOAD 16 LOADTYPE Seismic TITLE EL NOTIONAL X-
NOTIONAL LOAD
1 X -0.02
LOAD 17 LOADTYPE Seismic TITLE EL NOTIONAL Z+
NOTIONAL LOAD
1 Z 0.02
LOAD 18 LOADTYPE Seismic TITLE EL NOTIONAL Z-
NOTIONAL LOAD
1 Z -0.02
LOAD 19 LOADTYPE Temperature TITLE TEMPERATURE+
LOAD 20 LOADTYPE Temperature TITLE TEMPERATURE-
LOAD COMB 101 D
1 1.0
LOAD COMB 102 D+LR
1 1.0 2 1.0
LOAD COMB 103 D+LR2
1 1.0 3 1.0
LOAD COMB 104 D+S
1 1.0 4 1.0 5 1.0
LOAD COMB 105 D+0.75LR
1 1.0 2 0.75
LOAD COMB 106 D+0.75LR2
1 1.0 3 0.75
LOAD COMB 107 D+0.75S
1 1.0 4 0.75 5 0.75
LOAD COMB 108 D+WX+
1 1.0 7 1.0
LOAD COMB 109 D+WX-
1 1.0 8 1.0
LOAD COMB 110 D+WZ+
1 1.0 9 1.0
LOAD COMB 111 D+WZ-
1 1.0 10 1.0
LOAD COMB 112 D+0.7EX+
1 1.0 15 0.7
LOAD COMB 113 D+0.7EX-
1 1.0 16 0.7
LOAD COMB 114 D+0.7EZ+
1 1.0 17 0.7
LOAD COMB 115 D+0.7EZ-
1 1.0 18 0.7
LOAD COMB 116 D+0.75WX++0.75LR
1 1.0 7 0.75 2 0.75
LOAD COMB 117 D+0.75WX-+0.75LR
1 1.0 8 0.75 2 0.75
LOAD COMB 118 D+0.75WZ++0.75LR
1 1.0 9 0.75 2 0.75
LOAD COMB 119 D+0.75WZ-+0.75LR
1 1.0 10 0.75 2 0.75
LOAD COMB 120 D+0.75WX++0.75LR2
1 1.0 7 0.75 3 0.75
LOAD COMB 121 D+0.75WX-+0.75LR2
1 1.0 8 0.75 3 0.75
LOAD COMB 122 D+0.75WZ++0.75LR2
1 1.0 9 0.75 3 0.75
LOAD COMB 123 D+0.75WZ-+0.75LR2
1 1.0 10 0.75 3 0.75
LOAD COMB 124 D+0.75EX++0.75LR
1 1.0 15 0.75 2 0.75
LOAD COMB 125 D+0.75EX-+0.75LR
1 1.0 16 0.75 2 0.75
LOAD COMB 126 D+0.75EZ++0.75LR
1 1.0 17 0.75 2 0.75
LOAD COMB 127 D+0.75EZ-+0.75LR
1 1.0 18 0.75 2 0.75
LOAD COMB 128 D+0.75EX++0.75LR2
1 1.0 15 0.75 3 0.75
LOAD COMB 129 D+0.75EX-+0.75LR2
1 1.0 16 0.75 3 0.75
LOAD COMB 130 D+0.75EZ++0.75LR2
1 1.0 17 0.75 3 0.75
LOAD COMB 131 D+0.75EZ-+0.75LR2
1 1.0 18 0.75 3 0.75
LOAD COMB 132 D+0.75WX++0.75S
1 1.0 7 0.75 4 0.75 5 0.75
LOAD COMB 133 D+0.75WX-+0.75S
1 1.0 8 0.75 4 0.75 5 0.75
LOAD COMB 134 D+0.75WZ++0.75S
1 1.0 9 0.75 4 0.75 5 0.75
LOAD COMB 135 D+0.75WZ-+0.75S
1 1.0 10 0.75 4 0.75 5 0.75
LOAD COMB 136 D+0.525EX++0.75S
1 1.0 15 0.525 4 0.75 5 0.75
LOAD COMB 137 D+0.525EX-+0.75S
1 1.0 16 0.525 4 0.75 5 0.75
LOAD COMB 138 D+0.525EZ++0.75S
1 1.0 17 0.525 4 0.75 5 0.75
LOAD COMB 139 D+0.525EZ-+0.75S
1 1.0 18 0.525 4 0.75 5 0.75
LOAD COMB 140 0.6D+WX+
1 0.6 7 1.0
LOAD COMB 141 0.6D+WX-
1 0.6 8 1.0
LOAD COMB 142 0.6D+WZ+
1 0.6 9 1.0
LOAD COMB 143 0.6D+WZ-
1 0.6 10 1.0
LOAD COMB 144 0.6D+0.7EX+
1 0.6 15 0.7
LOAD COMB 145 0.6D+0.7EX-
1 0.6 16 0.7
LOAD COMB 146 0.6D+0.7EZ+
1 0.6 17 0.7
LOAD COMB 147 0.6D+0.7EZ-
1 0.6 18 0.7
LOAD COMB 201 D+0.7IL
1 1.0 6 0.7
LOAD COMB 202 D+0.7IL+0.7WILX++S
1 1.0 6 0.7 11 0.7 4 1.0 5 1.0
LOAD COMB 203 D+0.7IL+0.7WILX-+S
1 1.0 6 0.7 12 0.7 4 1.0 5 1.0
LOAD COMB 204 D+0.7IL+0.7WILZ++S
1 1.0 6 0.7 13 0.7 4 1.0 5 1.0
LOAD COMB 205 D+0.7IL+0.7WILZ-+S
1 1.0 6 0.7 14 0.7 4 1.0 5 1.0
LOAD COMB 206 D+0.7IL+0.7WILX+
1 1.0 6 0.7 11 0.7
LOAD COMB 207 D+0.7IL+0.7WILX-
1 1.0 6 0.7 12 0.7
LOAD COMB 208 D+0.7IL+0.7WILZ+
1 1.0 6 0.7 13 0.7
LOAD COMB 209 D+0.7IL+0.7WILZ-
1 1.0 6 0.7 14 0.7
LOAD COMB 301 1.4D
1 1.4
LOAD COMB 302 1.2D+0.5LR
1 1.2 2 0.5
LOAD COMB 303 1.2D+0.5LR2
1 1.2 3 0.5
LOAD COMB 304 1.2D+0.5S
1 1.2 4 0.5 5 0.5
LOAD COMB 305 1.2D+1.6LR+0.8WX+
1 1.2 2 1.6 7 0.8
LOAD COMB 306 1.2D+1.6LR+0.8WX-
1 1.2 2 1.6 8 0.8
LOAD COMB 307 1.2D+1.6LR+0.8WZ+
1 1.2 2 1.6 9 0.8
LOAD COMB 308 1.2D+1.6LR+0.8WZ-
1 1.2 2 1.6 10 0.8
LOAD COMB 309 1.2D+1.6LR2+0.8WX+
1 1.2 3 1.6 7 0.8
LOAD COMB 310 1.2D+1.6LR2+0.8WX-
1 1.2 3 1.6 8 0.8
LOAD COMB 311 1.2D+1.6LR2+0.8WZ+
1 1.2 3 1.6 9 0.8
LOAD COMB 312 1.2D+1.6LR2+0.8WZ-
1 1.2 3 1.6 10 0.8
LOAD COMB 313 1.2D+1.6S+0.8WX+
1 1.2 4 1.6 5 1.6 7 0.8
LOAD COMB 314 1.2D+1.6S+0.8WX-
1 1.2 4 1.6 5 1.6 8 0.8
LOAD COMB 315 1.2D+1.6S+0.8WZ+
1 1.2 4 1.6 5 1.6 9 0.8
LOAD COMB 316 1.2D+1.6S+0.8WZ-
1 1.2 4 1.6 5 1.6 10 0.8
LOAD COMB 317 1.2D+0.5LR+1.6WX+
1 1.2 2 0.5 7 1.6
LOAD COMB 318 1.2D+0.5LR+1.6WX-
1 1.2 2 0.5 8 1.6
LOAD COMB 319 1.2D+0.5LR+1.6WZ+
1 1.2 2 0.5 9 1.6
LOAD COMB 320 1.2D+0.5LR+1.6WZ-
1 1.2 2 0.5 10 1.6
LOAD COMB 321 1.2D+0.5LR2+1.6WX+
1 1.2 3 0.5 7 1.6
LOAD COMB 322 1.2D+0.5LR2+1.6WX-
1 1.2 3 0.5 8 1.6
LOAD COMB 323 1.2D+0.5LR2+1.6WZ+
1 1.2 3 0.5 9 1.6
LOAD COMB 324 1.2D+0.5LR2+1.6WZ-
1 1.2 3 0.5 10 1.6
LOAD COMB 325 1.2D+0.5S+1.6WX+
1 1.2 4 0.5 5 0.5 7 1.6
LOAD COMB 326 1.2D+0.5S+1.6WX-
1 1.2 4 0.5 5 0.5 8 1.6
LOAD COMB 327 1.2D+0.5S+1.6WZ+
1 1.2 4 0.5 5 0.5 9 1.6
LOAD COMB 328 1.2D+0.5S+1.6WZ-
1 1.2 4 0.5 5 0.5 10 1.6
LOAD COMB 329 1.2D+EX++0.2S
1 1.2 15 1.0 4 0.2 5 0.2
LOAD COMB 330 1.2D+EX-+0.2S
1 1.2 16 1.0 4 0.2 5 0.2
LOAD COMB 331 1.2D+EZ++0.2S
1 1.2 17 1.0 4 0.2 5 0.2
LOAD COMB 332 1.2D+EZ-+0.2S
1 1.0 18 1.0 4 1.0 5 1.0
LOAD COMB 333 0.9D+1.6WX+
1 0.9 7 1.6
LOAD COMB 334 0.9D+1.6WX-
1 0.9 8 1.6
LOAD COMB 335 0.9D+1.6WZ+
1 0.9 9 1.6
LOAD COMB 336 0.9D+1.6WZ-
1 0.9 10 1.6
LOAD COMB 337 0.9D+EX+
1 0.9 15 1.6
LOAD COMB 338 0.9D+EX-
1 0.9 16 1.6
LOAD COMB 339 0.9D+EZ+
1 0.9 17 1.6
LOAD COMB 340 0.9D+EZ-
1 0.9 18 1.6
LOAD COMB 401 1.2D+0.2I+0.5S
1 1.2 6 0.2 4 0.5 5 0.5
LOAD COMB 402 1.2D+I+WIX++0.5S
1 1.2 6 1.0 11 1.0 4 0.5 5 0.5
LOAD COMB 403 1.2D+I+WIX-+0.5S
1 1.2 6 1.0 12 1.0 4 0.5 5 0.5
LOAD COMB 404 1.2D+I+WIZ++0.5S
1 1.2 6 1.0 13 1.0 4 0.5 5 0.5
LOAD COMB 405 1.2D+I+WIZ-+0.5S
1 1.2 6 1.0 14 1.0 4 0.5 5 0.5
LOAD COMB 406 0.9D+I+WIX+
1 0.9 6 1.0 11 1.0
LOAD COMB 407 0.9D+I+WIX-
1 0.9 6 1.0 12 1.0
LOAD COMB 408 0.9D+I+WIZ+
1 0.9 6 1.0 13 1.0
LOAD COMB 409 0.9D+I+WIZ-
1 0.9 6 1.0 14 1.0
PERFORM ANALYSIS
DEFINE ENVELOPE
101 TO 147 201 TO 209 ENVELOPE 1 TYPE SERVICEABILITY
301 TO 340 401 TO 409 ENVELOPE 2 TYPE STRENGTH
END DEFINE ENVELOPE
LOAD LIST ENV 1 2
PARAMETER 1
CODE AISC UNIFIED 2010
METHOD LRFD
TORSION 1 MEMB 5 6 11 26 27 30 TO 40
FYLD 6.624e+006 MEMB 3 4 12 TO 19
FYLD 5.184e+006 MEMB 1 2 5 TO 11 20 TO 70
FU 8.352e+006 ALL
RATIO 0.8 ALL
DJ2 2 ALL
DJ1 1 ALL
DFF 360 ALL
CHECK CODE ALL
FINISH

Torsion in Beam

Sal — Tue, 28 May 2019 14:12:14 GMT

Hello,

I am designing a post base support which I modeled in STAAD. It's something like posts sitting on HSS's which are connected to two parallel channels. Please see below. I am getting some torsion as low as 3 kip-in in the HSS but all the beam passes. What does this signify? Do we have to resolve torsion or STAAD takes that into account while checking unity ratio?

Thanks

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 08-Feb-18
END JOB INFORMATION
INPUT WIDTH 79
UNIT FEET KIP
JOINT COORDINATES
1 -6 0 -3; 2 -6 0 -2; 3 -2 0 -3; 4 -2 0 -2; 5 2.5 0 -3; 6 2.5 0 -2; 9 6.5 0 -3;
10 6.5 0 -2;
MEMBER INCIDENCES
2 1 3; 3 2 4; 4 3 4; 5 3 5; 6 4 6; 7 5 6; 8 5 9; 9 6 10;
DEFINE MATERIAL START
ISOTROPIC STEEL
E 4.176e+006
POISSON 0.3
DENSITY 0.489024
ALPHA 6e-006
DAMP 0.03
TYPE STEEL
STRENGTH FY 5184 FU 8352 RY 1.5 RT 1.2
G 1.60615e+006
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
2 3 5 6 8 9 TABLE ST C4X6
4 7 TABLE ST HSST4X2X0.375
CONSTANTS
BETA 180 MEMB 2 5 8
BETA 90 MEMB 4 7
MATERIAL STEEL ALL
SUPPORTS
1 2 9 10 PINNED
MEMBER OFFSET
4 7 START 0 0.0833 0
4 7 END 0 0.0833 0
LOAD 1 LOADTYPE Dead TITLE LOAD CASE 1
SELFWEIGHT Y -1 LIST ALL
MEMBER LOAD
4 7 CON GY -1 0.5
LOAD 2 LOADTYPE Dead TITLE LOAD CASE 2
SELFWEIGHT Y -1 LIST ALL
MEMBER LOAD
4 7 CON GY -0.1 0.5
4 7 CMOM GX 0.125 0.5
LOAD 3 LOADTYPE Dead TITLE LOAD CASE 3
SELFWEIGHT Y -1 LIST ALL
MEMBER LOAD
4 7 CON GY -0.1 0.5
4 7 CMOM GY 0.125 0.5
LOAD COMB 4 COMBINATION LOAD CASE 4
1 1.0
LOAD COMB 5 COMBINATION LOAD CASE 5
2 1.0
LOAD COMB 6 COMBINATION LOAD CASE 6
3 1.0
PERFORM ANALYSIS
DEFINE ENVELOPE
4 TO 6 ENVELOPE 1 TYPE STRENGTH
END DEFINE ENVELOPE
PARAMETER 1
FU 8640 ALL
FYLD 5184 ALL
CODE AISC
CHECK CODE ALL
FINISH

Concrete Design in STAAD Pro

Sal — Mon, 20 May 2019 16:10:11 GMT

Hello,

I have done several steel design in STAAD PRO and this time I moved on to do concrete design using plates. I got shear and moments from the model but how do I say what's the moment at top of concrete and what's at the bottom?

Is there a way to differentiate between them?

Also when I was doing concrete design in STAAD, it shows me only minimum steel required. Is this the right way to design reinforcements in STAAD?

Thanks

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 09-Apr-19
END JOB INFORMATION
INPUT WIDTH 79
UNIT FEET KIP
JOINT COORDINATES
1 0 2 8; 3 16.1 2 8; 4 0 0 0; 5 0 0 1; 6 1 0 0; 7 1 0 1; 8 2 0 0; 9 2 0 1;
10 3 0 0; 11 3 0 1; 12 4 0 0; 13 4 0 1; 14 5 0 0; 15 5 0 1; 16 6 0 0; 17 6 0 1;
18 7 0 0; 19 7 0 1; 20 8 0 0; 21 8 0 1; 22 9 0 0; 23 9 0 1; 24 10 0 0;
25 10 0 1; 26 11 0 0; 27 11 0 1; 28 12 0 0; 29 12 0 1; 30 13 0 0; 31 13 0 1;
32 14 0 0; 33 14 0 1; 34 15 0 0; 35 15 0 1; 36 16 0 0; 37 16 0 1; 38 0 0 2;
39 1 0 2; 40 2 0 2; 41 3 0 2; 42 4 0 2; 43 5 0 2; 44 6 0 2; 45 7 0 2; 46 8 0 2;
47 9 0 2; 48 10 0 2; 49 11 0 2; 50 12 0 2; 51 13 0 2; 52 14 0 2; 53 15 0 2;
54 16 0 2; 55 0 0 3; 56 1 0 3; 57 2 0 3; 58 3 0 3; 59 4 0 3; 60 5 0 3;
61 6 0 3; 62 7 0 3; 63 8 0 3; 64 9 0 3; 65 10 0 3; 66 11 0 3; 67 12 0 3;
68 13 0 3; 69 14 0 3; 70 15 0 3; 71 16 0 3; 72 0 0 4; 73 1 0 4; 74 2 0 4;
75 3 0 4; 76 4 0 4; 77 5 0 4; 78 6 0 4; 79 7 0 4; 80 8 0 4; 81 9 0 4;
82 10 0 4; 83 11 0 4; 84 12 0 4; 85 13 0 4; 86 14 0 4; 87 15 0 4; 88 16 0 4;
89 0 0 5; 90 1 0 5; 91 2 0 5; 92 3 0 5; 93 4 0 5; 94 5 0 5; 95 6 0 5; 96 7 0 5;
97 8 0 5; 98 9 0 5; 99 10 0 5; 100 11 0 5; 101 12 0 5; 102 13 0 5; 103 14 0 5;
104 15 0 5; 105 16 0 5; 106 0 0 6; 107 1 0 6; 108 2 0 6; 109 3 0 6; 110 4 0 6;
111 5 0 6; 112 6 0 6; 113 7 0 6; 114 8 0 6; 115 9 0 6; 116 10 0 6; 117 11 0 6;
118 12 0 6; 119 13 0 6; 120 14 0 6; 121 15 0 6; 122 16 0 6; 123 0 0 7;
124 1 0 7; 125 2 0 7; 126 3 0 7; 127 4 0 7; 128 5 0 7; 129 6 0 7; 130 7 0 7;
131 8 0 7; 132 9 0 7; 133 10 0 7; 134 11 0 7; 135 12 0 7; 136 13 0 7;
137 14 0 7; 138 15 0 7; 139 16 0 7; 140 0 0 8; 141 1 0 8; 142 2 0 8; 143 3 0 8;
144 4 0 8; 145 5 0 8; 146 6 0 8; 147 7 0 8; 148 8 0 8; 149 9 0 8; 150 10 0 8;
151 11 0 8; 152 12 0 8; 153 13 0 8; 154 14 0 8; 155 15 0 8; 156 16 0 8;
157 0 0 9; 158 1 0 9; 159 2 0 9; 160 3 0 9; 161 4 0 9; 162 5 0 9; 163 6 0 9;
164 7 0 9; 165 8 0 9; 166 9 0 9; 167 10 0 9; 168 11 0 9; 169 12 0 9;
170 13 0 9; 171 14 0 9; 172 15 0 9; 173 16 0 9; 174 0 0 10; 175 1 0 10;
176 2 0 10; 177 3 0 10; 178 4 0 10; 179 5 0 10; 180 6 0 10; 181 7 0 10;
182 8 0 10; 183 9 0 10; 184 10 0 10; 185 11 0 10; 186 12 0 10; 187 13 0 10;
188 14 0 10; 189 15 0 10; 190 16 0 10; 191 0 0 11; 192 1 0 11; 193 2 0 11;
194 3 0 11; 195 4 0 11; 196 5 0 11; 197 6 0 11; 198 7 0 11; 199 8 0 11;
200 9 0 11; 201 10 0 11; 202 11 0 11; 203 12 0 11; 204 13 0 11; 205 14 0 11;
206 15 0 11; 207 16 0 11; 208 0 0 12; 209 1 0 12; 210 2 0 12; 211 3 0 12;
212 4 0 12; 213 5 0 12; 214 6 0 12; 215 7 0 12; 216 8 0 12; 217 9 0 12;
218 10 0 12; 219 11 0 12; 220 12 0 12; 221 13 0 12; 222 14 0 12; 223 15 0 12;
224 16 0 12; 225 0 0 13; 226 1 0 13; 227 2 0 13; 228 3 0 13; 229 4 0 13;
230 5 0 13; 231 6 0 13; 232 7 0 13; 233 8 0 13; 234 9 0 13; 235 10 0 13;
236 11 0 13; 237 12 0 13; 238 13 0 13; 239 14 0 13; 240 15 0 13; 241 16 0 13;
242 0 0 14; 243 1 0 14; 244 2 0 14; 245 3 0 14; 246 4 0 14; 247 5 0 14;
248 6 0 14; 249 7 0 14; 250 8 0 14; 251 9 0 14; 252 10 0 14; 253 11 0 14;
254 12 0 14; 255 13 0 14; 256 14 0 14; 257 15 0 14; 258 16 0 14; 259 0 0 15;
260 1 0 15; 261 2 0 15; 262 3 0 15; 263 4 0 15; 264 5 0 15; 265 6 0 15;
266 7 0 15; 267 8 0 15; 268 9 0 15; 269 10 0 15; 270 11 0 15; 271 12 0 15;
272 13 0 15; 273 14 0 15; 274 15 0 15; 275 16 0 15; 276 0 0 16; 277 1 0 16;
278 2 0 16; 279 3 0 16; 280 4 0 16; 281 5 0 16; 282 6 0 16; 283 7 0 16;
284 8 0 16; 285 9 0 16; 286 10 0 16; 287 11 0 16; 288 12 0 16; 289 13 0 16;
290 14 0 16; 291 15 0 16; 292 16 0 16; 300 0 2 9; 301 16.1 2 9; 302 0 2 7;
303 16.1 2 7; 304 8.05 2 9; 305 8.05 2 7; 306 9.05 2 7; 307 7.05 2 7;
308 9.05 2 9; 309 7.05 2 9;
MEMBER INCIDENCES
259 1 140; 260 3 156; 271 300 157; 272 301 173; 273 302 123; 274 303 139;
279 303 3; 280 301 3; 281 302 1; 282 1 300; 283 300 309; 284 304 308;
286 302 307; 287 305 306; 289 306 303; 290 132 306; 291 307 305; 292 130 307;
293 308 301; 294 166 308; 295 309 304; 296 164 309;
ELEMENT INCIDENCES SHELL
3 4 6 7 5; 4 6 8 9 7; 5 8 10 11 9; 6 10 12 13 11; 7 12 14 15 13; 8 14 16 17 15;
9 16 18 19 17; 10 18 20 21 19; 11 20 22 23 21; 12 22 24 25 23; 13 24 26 27 25;
14 26 28 29 27; 15 28 30 31 29; 16 30 32 33 31; 17 32 34 35 33; 18 34 36 37 35;
19 5 7 39 38; 20 7 9 40 39; 21 9 11 41 40; 22 11 13 42 41; 23 13 15 43 42;
24 15 17 44 43; 25 17 19 45 44; 26 19 21 46 45; 27 21 23 47 46; 28 23 25 48 47;
29 25 27 49 48; 30 27 29 50 49; 31 29 31 51 50; 32 31 33 52 51; 33 33 35 53 52;
34 35 37 54 53; 35 38 39 56 55; 36 39 40 57 56; 37 40 41 58 57; 38 41 42 59 58;
39 42 43 60 59; 40 43 44 61 60; 41 44 45 62 61; 42 45 46 63 62; 43 46 47 64 63;
44 47 48 65 64; 45 48 49 66 65; 46 49 50 67 66; 47 50 51 68 67; 48 51 52 69 68;
49 52 53 70 69; 50 53 54 71 70; 51 55 56 73 72; 52 56 57 74 73; 53 57 58 75 74;
54 58 59 76 75; 55 59 60 77 76; 56 60 61 78 77; 57 61 62 79 78; 58 62 63 80 79;
59 63 64 81 80; 60 64 65 82 81; 61 65 66 83 82; 62 66 67 84 83; 63 67 68 85 84;
64 68 69 86 85; 65 69 70 87 86; 66 70 71 88 87; 67 72 73 90 89; 68 73 74 91 90;
69 74 75 92 91; 70 75 76 93 92; 71 76 77 94 93; 72 77 78 95 94; 73 78 79 96 95;
74 79 80 97 96; 75 80 81 98 97; 76 81 82 99 98; 77 82 83 100 99;
78 83 84 101 100; 79 84 85 102 101; 80 85 86 103 102; 81 86 87 104 103;
82 87 88 105 104; 83 89 90 107 106; 84 90 91 108 107; 85 91 92 109 108;
86 92 93 110 109; 87 93 94 111 110; 88 94 95 112 111; 89 95 96 113 112;
90 96 97 114 113; 91 97 98 115 114; 92 98 99 116 115; 93 99 100 117 116;
94 100 101 118 117; 95 101 102 119 118; 96 102 103 120 119; 97 103 104 121 120;
98 104 105 122 121; 99 106 107 124 123; 100 107 108 125 124;
101 108 109 126 125; 102 109 110 127 126; 103 110 111 128 127;
104 111 112 129 128; 105 112 113 130 129; 106 113 114 131 130;
107 114 115 132 131; 108 115 116 133 132; 109 116 117 134 133;
110 117 118 135 134; 111 118 119 136 135; 112 119 120 137 136;
113 120 121 138 137; 114 121 122 139 138; 115 123 124 141 140;
116 124 125 142 141; 117 125 126 143 142; 118 126 127 144 143;
119 127 128 145 144; 120 128 129 146 145; 121 129 130 147 146;
122 130 131 148 147; 123 131 132 149 148; 124 132 133 150 149;
125 133 134 151 150; 126 134 135 152 151; 127 135 136 153 152;
128 136 137 154 153; 129 137 138 155 154; 130 138 139 156 155;
131 140 141 158 157; 132 141 142 159 158; 133 142 143 160 159;
134 143 144 161 160; 135 144 145 162 161; 136 145 146 163 162;
137 146 147 164 163; 138 147 148 165 164; 139 148 149 166 165;
140 149 150 167 166; 141 150 151 168 167; 142 151 152 169 168;
143 152 153 170 169; 144 153 154 171 170; 145 154 155 172 171;
146 155 156 173 172; 147 157 158 175 174; 148 158 159 176 175;
149 159 160 177 176; 150 160 161 178 177; 151 161 162 179 178;
152 162 163 180 179; 153 163 164 181 180; 154 164 165 182 181;
155 165 166 183 182; 156 166 167 184 183; 157 167 168 185 184;
158 168 169 186 185; 159 169 170 187 186; 160 170 171 188 187;
161 171 172 189 188; 162 172 173 190 189; 163 174 175 192 191;
164 175 176 193 192; 165 176 177 194 193; 166 177 178 195 194;
167 178 179 196 195; 168 179 180 197 196; 169 180 181 198 197;
170 181 182 199 198; 171 182 183 200 199; 172 183 184 201 200;
173 184 185 202 201; 174 185 186 203 202; 175 186 187 204 203;
176 187 188 205 204; 177 188 189 206 205; 178 189 190 207 206;
179 191 192 209 208; 180 192 193 210 209; 181 193 194 211 210;
182 194 195 212 211; 183 195 196 213 212; 184 196 197 214 213;
185 197 198 215 214; 186 198 199 216 215; 187 199 200 217 216;
188 200 201 218 217; 189 201 202 219 218; 190 202 203 220 219;
191 203 204 221 220; 192 204 205 222 221; 193 205 206 223 222;
194 206 207 224 223; 195 208 209 226 225; 196 209 210 227 226;
197 210 211 228 227; 198 211 212 229 228; 199 212 213 230 229;
200 213 214 231 230; 201 214 215 232 231; 202 215 216 233 232;
203 216 217 234 233; 204 217 218 235 234; 205 218 219 236 235;
206 219 220 237 236; 207 220 221 238 237; 208 221 222 239 238;
209 222 223 240 239; 210 223 224 241 240; 211 225 226 243 242;
212 226 227 244 243; 213 227 228 245 244; 214 228 229 246 245;
215 229 230 247 246; 216 230 231 248 247; 217 231 232 249 248;
218 232 233 250 249; 219 233 234 251 250; 220 234 235 252 251;
221 235 236 253 252; 222 236 237 254 253; 223 237 238 255 254;
224 238 239 256 255; 225 239 240 257 256; 226 240 241 258 257;
227 242 243 260 259; 228 243 244 261 260; 229 244 245 262 261;
230 245 246 263 262; 231 246 247 264 263; 232 247 248 265 264;
233 248 249 266 265; 234 249 250 267 266; 235 250 251 268 267;
236 251 252 269 268; 237 252 253 270 269; 238 253 254 271 270;
239 254 255 272 271; 240 255 256 273 272; 241 256 257 274 273;
242 257 258 275 274; 243 259 260 277 276; 244 260 261 278 277;
245 261 262 279 278; 246 262 263 280 279; 247 263 264 281 280;
248 264 265 282 281; 249 265 266 283 282; 250 266 267 284 283;
251 267 268 285 284; 252 268 269 286 285; 253 269 270 287 286;
254 270 271 288 287; 255 271 272 289 288; 256 272 273 290 289;
257 273 274 291 290; 258 274 275 292 291;
ELEMENT PROPERTY
3 TO 258 THICKNESS 2.167
DEFINE MATERIAL START
ISOTROPIC STEEL
E 4.176e+006
POISSON 0.3
DENSITY 0.489024
ALPHA 6e-006
DAMP 0.03
TYPE STEEL
STRENGTH FY 5184 FU 8352 RY 1.5 RT 1.2
ISOTROPIC CONCRETE
E 453600
POISSON 0.17
DENSITY 0.150336
ALPHA 5e-006
DAMP 0.05
TYPE CONCRETE
G 193846
TYPE CONCRETE
STRENGTH FCU 720
STRENGTH FCU 576
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
259 260 271 TO 274 279 TO 284 286 287 289 TO 296 TABLE ST W12X40
CONSTANTS
MATERIAL STEEL MEMB 259 260 271 TO 274 279 TO 284 286 287 289 TO 296
MATERIAL CONCRETE MEMB 3 TO 258
SUPPORTS
4 TO 292 ELASTIC MAT DIRECT Y SUBGRADE 100 PRINT
DEFINE MOVING LOAD
*Live + Impact * 1.4
TYPE 1 LOAD 49.5 49.5 49.5 49.5
DIST -5 -6 -5
*Braking * 1.4
TYPE 2 LOAD 11 4 4 11
DIST -5 -6 -5
*Traction * 1.4
TYPE 3 LOAD 6.5 2.5 2.5 6.5
DIST -5 -6 -5
TYPE 4 LOAD 7.5 7.5 7.5 7.5
DIST -5 -6 -5
TYPE 5 LOAD 11.5 11.5 11.5 11.5
DIST -5 -6 -5
*DL*1.4
LOAD 1 LOADTYPE Dead TITLE DL
MEMBER LOAD
283 284 286 287 289 291 293 295 UNI GY -0.28
LOAD GENERATION 34 ADD LOAD 1
TYPE 1 0 2 7 XINC 1
TYPE 2 0 2 7 XINC 1
TYPE 4 0 2 7 XINC 1
TYPE 1 0 2 9 XINC 1
TYPE 2 0 2 9 XINC 1
TYPE 4 0 2 9 XINC 1
LOAD GENERATION 34 ADD LOAD 1
TYPE 1 0 2 7 XINC 1
TYPE 3 0 2 7 XINC 1
TYPE 5 0 2 7 XINC 1
TYPE 1 0 2 9 XINC 1
TYPE 3 0 2 9 XINC 1
TYPE 5 0 2 9 XINC 1
PERFORM ANALYSIS
START CONCRETE DESIGN
CODE ACI
CLB 0.25 MEMB 3 TO 258
FC 576 MEMB 3 TO 258
FYMAIN 7200 MEMB 3 TO 258
DESIGN ELEMENT 3 TO 258
END CONCRETE DESIGN
FINISH

STAAD Moving Load - Moving Load applied beyond

Sal — Fri, 26 Apr 2019 18:57:47 GMT

I am getting the specified warning.

If I ignore this warning, will this have any effect on analysis?

The reason to have this type of design is because that's the only beam for which I want to check the slab design.

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 09-Apr-19
END JOB INFORMATION
INPUT WIDTH 79
UNIT FEET KIP
JOINT COORDINATES
1 0 2 8; 2 8.05 2 8; 3 16.1 2 8; 4 0 0 0; 5 0 0 1; 6 1 0 0; 7 1 0 1; 8 2 0 0;
9 2 0 1; 10 3 0 0; 11 3 0 1; 12 4 0 0; 13 4 0 1; 14 5 0 0; 15 5 0 1; 16 6 0 0;
17 6 0 1; 18 7 0 0; 19 7 0 1; 20 8 0 0; 21 8 0 1; 22 9 0 0; 23 9 0 1;
24 10 0 0; 25 10 0 1; 26 11 0 0; 27 11 0 1; 28 12 0 0; 29 12 0 1; 30 13 0 0;
31 13 0 1; 32 14 0 0; 33 14 0 1; 34 15 0 0; 35 15 0 1; 36 16 0 0; 37 16 0 1;
38 0 0 2; 39 1 0 2; 40 2 0 2; 41 3 0 2; 42 4 0 2; 43 5 0 2; 44 6 0 2; 45 7 0 2;
46 8 0 2; 47 9 0 2; 48 10 0 2; 49 11 0 2; 50 12 0 2; 51 13 0 2; 52 14 0 2;
53 15 0 2; 54 16 0 2; 55 0 0 3; 56 1 0 3; 57 2 0 3; 58 3 0 3; 59 4 0 3;
60 5 0 3; 61 6 0 3; 62 7 0 3; 63 8 0 3; 64 9 0 3; 65 10 0 3; 66 11 0 3;
67 12 0 3; 68 13 0 3; 69 14 0 3; 70 15 0 3; 71 16 0 3; 72 0 0 4; 73 1 0 4;
74 2 0 4; 75 3 0 4; 76 4 0 4; 77 5 0 4; 78 6 0 4; 79 7 0 4; 80 8 0 4; 81 9 0 4;
82 10 0 4; 83 11 0 4; 84 12 0 4; 85 13 0 4; 86 14 0 4; 87 15 0 4; 88 16 0 4;
89 0 0 5; 90 1 0 5; 91 2 0 5; 92 3 0 5; 93 4 0 5; 94 5 0 5; 95 6 0 5; 96 7 0 5;
97 8 0 5; 98 9 0 5; 99 10 0 5; 100 11 0 5; 101 12 0 5; 102 13 0 5; 103 14 0 5;
104 15 0 5; 105 16 0 5; 106 0 0 6; 107 1 0 6; 108 2 0 6; 109 3 0 6; 110 4 0 6;
111 5 0 6; 112 6 0 6; 113 7 0 6; 114 8 0 6; 115 9 0 6; 116 10 0 6; 117 11 0 6;
118 12 0 6; 119 13 0 6; 120 14 0 6; 121 15 0 6; 122 16 0 6; 123 0 0 7;
124 1 0 7; 125 2 0 7; 126 3 0 7; 127 4 0 7; 128 5 0 7; 129 6 0 7; 130 7 0 7;
131 8 0 7; 132 9 0 7; 133 10 0 7; 134 11 0 7; 135 12 0 7; 136 13 0 7;
137 14 0 7; 138 15 0 7; 139 16 0 7; 140 0 0 8; 141 1 0 8; 142 2 0 8; 143 3 0 8;
144 4 0 8; 145 5 0 8; 146 6 0 8; 147 7 0 8; 148 8 0 8; 149 9 0 8; 150 10 0 8;
151 11 0 8; 152 12 0 8; 153 13 0 8; 154 14 0 8; 155 15 0 8; 156 16 0 8;
157 0 0 9; 158 1 0 9; 159 2 0 9; 160 3 0 9; 161 4 0 9; 162 5 0 9; 163 6 0 9;
164 7 0 9; 165 8 0 9; 166 9 0 9; 167 10 0 9; 168 11 0 9; 169 12 0 9;
170 13 0 9; 171 14 0 9; 172 15 0 9; 173 16 0 9; 174 0 0 10; 175 1 0 10;
176 2 0 10; 177 3 0 10; 178 4 0 10; 179 5 0 10; 180 6 0 10; 181 7 0 10;
182 8 0 10; 183 9 0 10; 184 10 0 10; 185 11 0 10; 186 12 0 10; 187 13 0 10;
188 14 0 10; 189 15 0 10; 190 16 0 10; 191 0 0 11; 192 1 0 11; 193 2 0 11;
194 3 0 11; 195 4 0 11; 196 5 0 11; 197 6 0 11; 198 7 0 11; 199 8 0 11;
200 9 0 11; 201 10 0 11; 202 11 0 11; 203 12 0 11; 204 13 0 11; 205 14 0 11;
206 15 0 11; 207 16 0 11; 208 0 0 12; 209 1 0 12; 210 2 0 12; 211 3 0 12;
212 4 0 12; 213 5 0 12; 214 6 0 12; 215 7 0 12; 216 8 0 12; 217 9 0 12;
218 10 0 12; 219 11 0 12; 220 12 0 12; 221 13 0 12; 222 14 0 12; 223 15 0 12;
224 16 0 12; 225 0 0 13; 226 1 0 13; 227 2 0 13; 228 3 0 13; 229 4 0 13;
230 5 0 13; 231 6 0 13; 232 7 0 13; 233 8 0 13; 234 9 0 13; 235 10 0 13;
236 11 0 13; 237 12 0 13; 238 13 0 13; 239 14 0 13; 240 15 0 13; 241 16 0 13;
242 0 0 14; 243 1 0 14; 244 2 0 14; 245 3 0 14; 246 4 0 14; 247 5 0 14;
248 6 0 14; 249 7 0 14; 250 8 0 14; 251 9 0 14; 252 10 0 14; 253 11 0 14;
254 12 0 14; 255 13 0 14; 256 14 0 14; 257 15 0 14; 258 16 0 14; 259 0 0 15;
260 1 0 15; 261 2 0 15; 262 3 0 15; 263 4 0 15; 264 5 0 15; 265 6 0 15;
266 7 0 15; 267 8 0 15; 268 9 0 15; 269 10 0 15; 270 11 0 15; 271 12 0 15;
272 13 0 15; 273 14 0 15; 274 15 0 15; 275 16 0 15; 276 0 0 16; 277 1 0 16;
278 2 0 16; 279 3 0 16; 280 4 0 16; 281 5 0 16; 282 6 0 16; 283 7 0 16;
284 8 0 16; 285 9 0 16; 286 10 0 16; 287 11 0 16; 288 12 0 16; 289 13 0 16;
290 14 0 16; 291 15 0 16; 292 16 0 16;
MEMBER INCIDENCES
1 1 2; 2 2 3; 259 1 140; 260 3 156; 261 148 2;
ELEMENT INCIDENCES SHELL
3 4 6 7 5; 4 6 8 9 7; 5 8 10 11 9; 6 10 12 13 11; 7 12 14 15 13; 8 14 16 17 15;
9 16 18 19 17; 10 18 20 21 19; 11 20 22 23 21; 12 22 24 25 23; 13 24 26 27 25;
14 26 28 29 27; 15 28 30 31 29; 16 30 32 33 31; 17 32 34 35 33; 18 34 36 37 35;
19 5 7 39 38; 20 7 9 40 39; 21 9 11 41 40; 22 11 13 42 41; 23 13 15 43 42;
24 15 17 44 43; 25 17 19 45 44; 26 19 21 46 45; 27 21 23 47 46; 28 23 25 48 47;
29 25 27 49 48; 30 27 29 50 49; 31 29 31 51 50; 32 31 33 52 51; 33 33 35 53 52;
34 35 37 54 53; 35 38 39 56 55; 36 39 40 57 56; 37 40 41 58 57; 38 41 42 59 58;
39 42 43 60 59; 40 43 44 61 60; 41 44 45 62 61; 42 45 46 63 62; 43 46 47 64 63;
44 47 48 65 64; 45 48 49 66 65; 46 49 50 67 66; 47 50 51 68 67; 48 51 52 69 68;
49 52 53 70 69; 50 53 54 71 70; 51 55 56 73 72; 52 56 57 74 73; 53 57 58 75 74;
54 58 59 76 75; 55 59 60 77 76; 56 60 61 78 77; 57 61 62 79 78; 58 62 63 80 79;
59 63 64 81 80; 60 64 65 82 81; 61 65 66 83 82; 62 66 67 84 83; 63 67 68 85 84;
64 68 69 86 85; 65 69 70 87 86; 66 70 71 88 87; 67 72 73 90 89; 68 73 74 91 90;
69 74 75 92 91; 70 75 76 93 92; 71 76 77 94 93; 72 77 78 95 94; 73 78 79 96 95;
74 79 80 97 96; 75 80 81 98 97; 76 81 82 99 98; 77 82 83 100 99;
78 83 84 101 100; 79 84 85 102 101; 80 85 86 103 102; 81 86 87 104 103;
82 87 88 105 104; 83 89 90 107 106; 84 90 91 108 107; 85 91 92 109 108;
86 92 93 110 109; 87 93 94 111 110; 88 94 95 112 111; 89 95 96 113 112;
90 96 97 114 113; 91 97 98 115 114; 92 98 99 116 115; 93 99 100 117 116;
94 100 101 118 117; 95 101 102 119 118; 96 102 103 120 119; 97 103 104 121 120;
98 104 105 122 121; 99 106 107 124 123; 100 107 108 125 124;
101 108 109 126 125; 102 109 110 127 126; 103 110 111 128 127;
104 111 112 129 128; 105 112 113 130 129; 106 113 114 131 130;
107 114 115 132 131; 108 115 116 133 132; 109 116 117 134 133;
110 117 118 135 134; 111 118 119 136 135; 112 119 120 137 136;
113 120 121 138 137; 114 121 122 139 138; 115 123 124 141 140;
116 124 125 142 141; 117 125 126 143 142; 118 126 127 144 143;
119 127 128 145 144; 120 128 129 146 145; 121 129 130 147 146;
122 130 131 148 147; 123 131 132 149 148; 124 132 133 150 149;
125 133 134 151 150; 126 134 135 152 151; 127 135 136 153 152;
128 136 137 154 153; 129 137 138 155 154; 130 138 139 156 155;
131 140 141 158 157; 132 141 142 159 158; 133 142 143 160 159;
134 143 144 161 160; 135 144 145 162 161; 136 145 146 163 162;
137 146 147 164 163; 138 147 148 165 164; 139 148 149 166 165;
140 149 150 167 166; 141 150 151 168 167; 142 151 152 169 168;
143 152 153 170 169; 144 153 154 171 170; 145 154 155 172 171;
146 155 156 173 172; 147 157 158 175 174; 148 158 159 176 175;
149 159 160 177 176; 150 160 161 178 177; 151 161 162 179 178;
152 162 163 180 179; 153 163 164 181 180; 154 164 165 182 181;
155 165 166 183 182; 156 166 167 184 183; 157 167 168 185 184;
158 168 169 186 185; 159 169 170 187 186; 160 170 171 188 187;
161 171 172 189 188; 162 172 173 190 189; 163 174 175 192 191;
164 175 176 193 192; 165 176 177 194 193; 166 177 178 195 194;
167 178 179 196 195; 168 179 180 197 196; 169 180 181 198 197;
170 181 182 199 198; 171 182 183 200 199; 172 183 184 201 200;
173 184 185 202 201; 174 185 186 203 202; 175 186 187 204 203;
176 187 188 205 204; 177 188 189 206 205; 178 189 190 207 206;
179 191 192 209 208; 180 192 193 210 209; 181 193 194 211 210;
182 194 195 212 211; 183 195 196 213 212; 184 196 197 214 213;
185 197 198 215 214; 186 198 199 216 215; 187 199 200 217 216;
188 200 201 218 217; 189 201 202 219 218; 190 202 203 220 219;
191 203 204 221 220; 192 204 205 222 221; 193 205 206 223 222;
194 206 207 224 223; 195 208 209 226 225; 196 209 210 227 226;
197 210 211 228 227; 198 211 212 229 228; 199 212 213 230 229;
200 213 214 231 230; 201 214 215 232 231; 202 215 216 233 232;
203 216 217 234 233; 204 217 218 235 234; 205 218 219 236 235;
206 219 220 237 236; 207 220 221 238 237; 208 221 222 239 238;
209 222 223 240 239; 210 223 224 241 240; 211 225 226 243 242;
212 226 227 244 243; 213 227 228 245 244; 214 228 229 246 245;
215 229 230 247 246; 216 230 231 248 247; 217 231 232 249 248;
218 232 233 250 249; 219 233 234 251 250; 220 234 235 252 251;
221 235 236 253 252; 222 236 237 254 253; 223 237 238 255 254;
224 238 239 256 255; 225 239 240 257 256; 226 240 241 258 257;
227 242 243 260 259; 228 243 244 261 260; 229 244 245 262 261;
230 245 246 263 262; 231 246 247 264 263; 232 247 248 265 264;
233 248 249 266 265; 234 249 250 267 266; 235 250 251 268 267;
236 251 252 269 268; 237 252 253 270 269; 238 253 254 271 270;
239 254 255 272 271; 240 255 256 273 272; 241 256 257 274 273;
242 257 258 275 274; 243 259 260 277 276; 244 260 261 278 277;
245 261 262 279 278; 246 262 263 280 279; 247 263 264 281 280;
248 264 265 282 281; 249 265 266 283 282; 250 266 267 284 283;
251 267 268 285 284; 252 268 269 286 285; 253 269 270 287 286;
254 270 271 288 287; 255 271 272 289 288; 256 272 273 290 289;
257 273 274 291 290; 258 274 275 292 291;
ELEMENT PROPERTY
3 TO 258 THICKNESS 1.5
DEFINE MATERIAL START
ISOTROPIC STEEL
E 4.176e+006
POISSON 0.3
DENSITY 0.489024
ALPHA 6e-006
DAMP 0.03
TYPE STEEL
STRENGTH FY 5184 FU 8352 RY 1.5 RT 1.2
ISOTROPIC CONCRETE
E 453600
POISSON 0.17
DENSITY 0.150336
ALPHA 5e-006
DAMP 0.05
TYPE CONCRETE
G 193846
TYPE CONCRETE
STRENGTH FCU 720
STRENGTH FCU 576
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
1 2 259 TO 261 TABLE ST W12X40
CONSTANTS
MATERIAL STEEL MEMB 1 2 259 TO 261
MATERIAL CONCRETE MEMB 3 TO 258
SUPPORTS
4 TO 292 ELASTIC MAT DIRECT Y SUBGRADE 100 PRINT
DEFINE MOVING LOAD
*Live + Impact * 1.4
TYPE 1 LOAD 88.2 88.2 88.2 88.2
DIST -5 -6 -5
*Braking * 1.4
TYPE 2 LOAD 15.1914 5.6966 5.6966 15.1914
DIST -5 -6 -5
*Traction * 1.4
TYPE 3 LOAD 8.883 3.3306 3.3306 8.883
DIST -5 -6 -5
*DL*1.4
LOAD 1 LOADTYPE Dead TITLE DL
MEMBER LOAD
1 2 UNI GY -0.28
LOAD GENERATION 34 ADD LOAD 1
TYPE 1 0 2 8 XINC 1
TYPE 2 0 2 8 XINC 1
LOAD GENERATION 34 ADD LOAD 1
TYPE 1 0 2 8 XINC 1
TYPE 3 0 2 8 XINC 1
PERFORM ANALYSIS
FINISH

Design of a Beam perpendicular to and below a top beam

Sal — Fri, 19 Apr 2019 15:50:40 GMT

Hello,

I am designing a rooftop dunnage structure in staad pro. In my case, I have beams which are on top of one another in perpendicular directions. So I created a thick post between those beams to act like a stub which has no significance so I modeled it really thick. There will be a pin connection between these beams so I released My and Mz for top beams at start and end to not transfer any moment and just shear and axial. I also don't want the stub to transfer any moment to the beam below as there will actually be no moment caused by the top beams on bottom beams in the real scenario as it's a pin joint. So I released My and Mz at the start and end of these stubs. In doing so, I am getting various instabilities. Can someone please help me rectify these.

Thanks

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 19-Apr-19
END JOB INFORMATION
INPUT WIDTH 79
UNIT FEET KIP
JOINT COORDINATES
1 0 0 0; 2 0 0 27.083; 3 5 0 0; 4 5 0 27.083; 5 12.7917 0 0;
6 12.7917 0 27.083; 7 0 0 4.51383; 8 0 0 9.02767; 9 0 0 13.5415;
10 0 0 18.0553; 11 0 0 22.5692; 12 5 0 4.51383; 13 5 0 9.02767; 14 5 0 13.5415;
15 5 0 18.0553; 16 5 0 22.5692; 17 0 -1 0; 18 0 -1 27.083; 19 5 -1 0;
20 5 -1 27.083; 21 12.7917 -1 0; 22 12.7917 -1 27.083; 23 0 -3 0;
24 12.7917 -3 0; 25 12.7917 -3 27.083; 26 0 -3 27.083; 27 12.7917 0 0.75;
28 0 0 0.75; 29 12.7917 0 26.333; 30 0 0 26.333;
MEMBER INCIDENCES
1 1 28; 2 3 12; 3 5 27; 4 3 1; 5 4 2; 6 7 8; 7 8 9; 8 9 10; 9 10 11; 10 11 30;
11 12 13; 12 13 14; 13 14 15; 14 15 16; 15 16 4; 16 7 12; 17 8 13; 18 9 14;
19 10 15; 20 11 16; 21 1 17; 22 2 18; 23 3 19; 24 4 20; 25 5 21; 26 6 22;
27 17 19; 28 19 21; 29 18 20; 30 20 22; 31 17 23; 32 21 24; 33 22 25; 34 18 26;
35 27 29; 36 27 21; 37 28 7; 38 28 17; 39 29 6; 40 29 22; 41 30 2; 42 30 18;
DEFINE MATERIAL START
ISOTROPIC STEEL
E 4.176e+006
POISSON 0.3
DENSITY 0.489024
ALPHA 6e-006
DAMP 0.03
TYPE STEEL
STRENGTH FY 5184 FU 8352 RY 1.5 RT 1.2
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
1 TO 3 6 TO 15 27 TO 30 35 37 39 41 TABLE ST W12X26
4 5 16 TO 20 TABLE ST MC6X18
31 TO 34 TABLE ST HSST4X4X0.5
MEMBER PROPERTY
21 TO 26 PRIS YD 0.75 ZD 0.75
MEMBER PROPERTY AMERICAN
36 38 40 42 TABLE ST L40408
CONSTANTS
MATERIAL STEEL ALL
SUPPORTS
23 TO 26 PINNED
MEMBER RELEASE
1 TO 5 16 TO 26 31 TO 34 36 38 40 42 START MY MZ
4 5 15 TO 26 36 38 TO 42 END MY MZ
LOAD 1 LOADTYPE Dead TITLE DL
MEMBER LOAD
2 3 11 TO 15 35 39 UNI GY -0.22
SELFWEIGHT Y -1 LIST 1 TO 7 10 TO 18 20 27 TO 34
MEMBER LOAD
16 TO 18 20 UNI GY -0.036
4 5 UNI GY -0.018
PERFORM ANALYSIS
FINISH

Moment Releases in Staad

Sal — Mon, 22 Apr 2019 21:34:16 GMT

Hello,

I want to understand member releases in staad better. The attached figure has 2 beams in x and z-direction. At the joint, it has a short column going down then another beam and a knee brace. Finally, it has a bottom column fixed to the base.

1. I have Mz and My release for top two beams as I don't want to transfer moment from there. So does this mean the connection of the top 2 beams acts like a pinned connection to the column? (I released the moment as the intention was to make the connection as a pinned connection.)

2. I have a moment release in Mz, My at the end of the short column as I don't want to transfer the moment from this short column to the beam and column below. Again does that mean it will act as pin connection?

3. I want a pin connection between the bottom beam and the bottom big column. So can I just release Mz, My at top of column or end of beam? Will that suffice? If not then can you please let me know how can I make that connection act as a pin connection.

I have also attached the code as by doing all 3 steps as mentioned above, I am getting an instability which should not have occurred. Any help will be really appreciated. It is like a recurring issue I am facing while using moment releases in Staad.

Thanks

Structure1.std

Is there a way to add two different moving loads in a combination?

Sal — Tue, 09 Apr 2019 18:38:00 GMT

Hello,

I have 3 moving loads. I want to combine type 1 with type 2 and then type 1 with type 3. Is there a way I can do it in one model.

Thanks

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 09-Apr-19
END JOB INFORMATION
INPUT WIDTH 79
UNIT FEET KIP
JOINT COORDINATES
1 0 0 0; 2 8.05 0 0; 3 16.1 0 0;
MEMBER INCIDENCES
1 1 2; 2 2 3;
DEFINE MATERIAL START
ISOTROPIC STEEL
E 4.176e+006
POISSON 0.3
DENSITY 0.489024
ALPHA 6e-006
DAMP 0.03
TYPE STEEL
STRENGTH FY 5184 FU 8352 RY 1.5 RT 1.2
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
1 2 TABLE ST W12X40
CONSTANTS
MATERIAL STEEL ALL
SUPPORTS
1 TO 3 PINNED
DEFINE MOVING LOAD
TYPE 1 LOAD 63 63 63 63
DIST -5 -6 -5
TYPE 2 LOAD 10.851 4.069 4.069 10.851
DIST -5 -6 -5
TYPE 3 LOAD 6.345 2.379 2.379 6.345
DIST -5 -6 -5
LOAD 1 LOADTYPE Dead TITLE DL
MEMBER LOAD
1 2 UNI GY -0.2
LOAD GENERATION 34
TYPE 1 0 0 0 XINC 1
LOAD GENERATION 34
TYPE 2 0 0 0 XINC 1
LOAD GENERATION 34
TYPE 3 0 0 0 XINC 1
PERFORM ANALYSIS
FINISH