Help with this error, Error: Problem Processing Suface (no of nodes) Incidence. Please Check the surface incidence.

Surface 23 seems to be defined incorrectly in the model. Go to STAAD Editor and change line

180 191 192 181 192 191 SURFACE 23

to

180 191 192 181 SURFACE 23

and this error should not be reported anymore.

• Help with this error
• STAAD SPACE
  START JOB INFORMATION
  ENGINEER DATE 08-Mar-21
  END JOB INFORMATION
  INPUT WIDTH 79
  UNIT METER KN
  JOINT COORDINATES
  1 23.5 0 0; 2 28.2 0 0; 3 23.5 0 1.67; 4 28.2 0 2.7; 5 28.2 0 5.6;
  6 23.5 0 5.6; 7 18.8 1 2.7; 8 23.5 1 2.7; 9 18.8 1 4.37; 11 23.5 1 8.3;
  12 18.8 1 8.3; 13 14.1 2 5.4; 14 18.8 2 5.4; 15 14.1 2 7.07; 17 18.8 2 11;
  18 14.1 2 11; 19 9.4 3 8.1; 20 14.1 3 8.1; 21 9.4 3 9.77; 23 14.1 3 13.7;
  24 9.4 3 13.7; 25 4.7 4 10.8; 26 9.4 4 10.8; 27 4.7 4 12.47; 29 9.4 4 16.4;
  30 4.7 4 16.4; 31 0 3 13.5; 32 4.7 3 13.5; 33 0 3 15.17; 35 4.7 3 19.1;
  36 0 3 19.1; 37 23.5 3.5 0; 38 28.2 3.5 0; 39 23.5 3.5 1.67; 40 28.2 3.5 2.7;
  41 28.2 3.5 5.6; 42 23.5 3.5 5.6; 43 18.8 4.5 2.7; 44 23.5 4.5 2.7;
  45 18.8 4.5 4.37; 46 23.5 4.5 8.3; 47 18.8 4.5 8.3; 48 14.1 5.5 5.4;
  49 18.8 5.5 5.4; 50 14.1 5.5 7.07; 51 18.8 5.5 11; 52 14.1 5.5 11;
  53 9.4 6.5 8.1; 54 14.1 6.5 8.1; 55 9.4 6.5 9.77; 56 14.1 6.5 13.7;
  57 9.4 6.5 13.7; 58 4.7 7.5 10.8; 59 9.4 7.5 10.8; 60 4.7 7.5 12.47;
  61 9.4 7.5 16.4; 62 4.7 7.5 16.4; 63 0 6.5 13.5; 64 4.7 6.5 13.5;
  65 0 6.5 15.17; 66 4.7 6.5 19.1; 67 0 6.5 19.1; 68 23.5 4.5 5.6;
  69 18.8 5.5 8.3; 70 14.1 6.5 11; 71 9.4 7.5 13.7; 91 7.05 9.2625 10.2;
  92 7.05 9.2625 17; 93 8.8 8.8245 10.2; 96 10 8.5245 17; 97 10 8.5245 14.3;
  98 14.7 7.3495 14.3; 99 14.7 7.3495 11.6; 100 19.4 6.1745 11.6;
  101 19.4 6.1745 8.9; 102 24.1 4.9995 8.9; 104 24.1 4.9995 6.2;
  105 8.8 8.8245 7.5; 106 13.5 7.6495 7.5; 107 13.5 7.6495 4.8;
  108 18.2 6.4745 4.8; 109 18.2 6.4745 2.1; 110 22.9 5.2995 2.1;
  111 22.9 5.2995 -0.6; 112 28.8 3.8245 -0.6; 113 28.8 3.8245 6.2;
  114 4.1 8.525 10.2; 116 4.1 8.525 12.8; 117 -0.6 7.35 12.8; 118 5.3 8.825 17;
  119 5.3 8.825 19.7; 120 -0.6 7.35 19.7; 123 9.4 8.6 16.4; 124 4.7 8.6 16.4;
  125 4.7 8.6 12.47; 126 28.2 4 0; 127 28.2 4 5.6; 128 23.5 5.2 1.67;
  129 23.5 5.2 5.6; 130 23.5 5.2 8.3; 131 18.8 6.3 4.37; 132 18.8 6.3 8.3;
  133 18.8 6.3 11; 134 14.1 7.5 13.7; 135 0 7.5 19.1; 136 0 7.5 15.17;
  137 4.7 8.5 19.1; 138 14.1 7.5 7.07; 139 9.4 8.5 9.77; 140 7.05 9.2625 10.3;
  141 7.05 9.2625 17.1;
  MEMBER INCIDENCES
  1 1 2; 2 1 3; 3 2 4; 4 4 5; 5 5 6; 6 3 6; 7 7 8; 8 7 9; 11 11 12; 12 9 12;
  13 13 14; 14 13 15; 17 17 18; 18 15 18; 19 19 20; 20 19 21; 23 23 24; 24 21 24;
  25 25 26; 26 25 27; 29 29 30; 30 27 30; 31 31 32; 32 31 33; 35 35 36; 36 33 36;
  37 32 35; 38 26 29; 39 20 23; 40 14 17; 41 8 11; 43 2 38; 44 3 39; 45 4 40;
  46 5 41; 47 6 42; 50 9 45; 51 11 46; 52 12 47; 55 15 50; 56 17 51; 57 18 52;
  60 21 55; 61 23 56; 62 24 57; 65 27 60; 66 29 61; 67 30 62; 70 33 65; 71 35 66;
  72 36 67; 73 37 38; 74 37 39; 75 38 40; 76 40 41; 77 41 42; 78 39 42; 79 43 44;
  80 43 45; 81 46 47; 82 45 47; 83 48 49; 84 48 50; 85 51 52; 86 50 52; 87 53 54;
  88 53 55; 89 56 57; 90 55 57; 91 58 59; 92 58 60; 93 61 62; 94 60 62; 95 63 64;
  96 63 65; 97 66 67; 98 65 67; 99 64 66; 100 59 71; 101 54 70; 102 49 69;
  103 44 68; 104 68 46; 105 42 68; 106 69 51; 107 47 69; 108 70 56; 109 52 70;
  110 71 61; 111 57 71; 139 61 123; 140 62 124; 141 60 125; 142 38 126;
  143 41 127; 144 39 128; 145 42 129; 146 46 130; 147 45 131; 148 47 132;
  149 51 133; 150 56 134; 151 67 135; 152 65 136; 153 66 137; 154 50 138;
  155 55 139;
  ELEMENT INCIDENCES SHELL
  131 37 38 41 42; 132 43 44 46 47; 133 48 49 51 52; 134 53 54 56 57;
  135 58 59 61 62; 136 63 64 66 67;
  SURFACE INCIDENCE
  91 93 105 106 107 108 109 110 111 112 113 104 102 101 100 99 98 97 96 92 -
  SURFACE 1
  140 114 116 117 120 119 118 141 SURFACE 2
  ELEMENT PROPERTY
  131 TO 136 THICKNESS 0.125
  DEFINE MATERIAL START
  ISOTROPIC CONCRETE
  E 2.17185e+007
  POISSON 0.17
  DENSITY 23.5616
  ALPHA 1e-005
  DAMP 0.05
  TYPE CONCRETE
  STRENGTH FCU 27579
  END DEFINE MATERIAL
  MEMBER PROPERTY AMERICAN
  43 TO 47 50 TO 52 55 TO 57 60 TO 62 65 TO 67 70 TO 72 105 107 109 111 139 -
  140 TO 155 PRIS YD 0.23 ZD 0.4
  1 TO 8 11 TO 14 17 TO 20 23 TO 26 29 TO 32 35 TO 41 73 TO 104 106 108 -
  110 PRIS YD 0.23 ZD 0.35
  SURFACE PROPERTY
  1 2 THICKNESS 0.125
  CONSTANTS
  MATERIAL CONCRETE ALL
  SURFACE CONSTANTS
  MATERIAL CONCRETE ALL
  SUPPORTS
  1 TO 7 9 11 TO 13 15 17 TO 19 21 23 TO 25 27 29 TO 31 33 35 36 FIXED
  DEFINE 1893 LOAD
  ZONE 0.16 RF 5 I 1 SS 1 ST 1 DM 0.05
  SELFWEIGHT 1
  MEMBER WEIGHT
  1 TO 8 11 TO 14 17 TO 20 23 TO 26 29 TO 32 35 TO 41 73 TO 104 106 108 -
  110 UNI 1.725
  DEFINE WIND LOAD
  TYPE 1 WIND 1
  <! STAAD PRO GENERATED DATA DO NOT MODIFY !!!
  ASCE-7-2010:PARAMS 44.000 MPH 0 1 3 0 0.000 FT 0.000 FT 0.000 FT 1 -
  1 3.500 M 28.500 M 19.600 M 2.000 0.010 0 -
  0 0 0 0 0.575 1.000 1.000 0.850 0 -
  0 0 0 0.861 0.800 -0.550
  !> END GENERATED DATA BLOCK
  INT 0.143583 0.143583 HEIG  0  4.572
  EXP 1 JOINT 1 TO 9 11 TO 15 17 TO 21 23 TO 27 29 TO 33 35 TO 71 91 TO 93 96 -
  97 TO 102 104 TO 114 116 TO 120 123 TO 139
  LOAD 1 LOADTYPE Seismic  TITLE EQ X
  1893 LOAD X 1
  LOAD 2 LOADTYPE Seismic  TITLE EQ Z
  1893 LOAD Z 1
  LOAD 3 LOADTYPE Wind  TITLE WX
  WIND LOAD X 1 TYPE 1
  WIND LOAD X -1 TYPE 1
  LOAD 4 LOADTYPE Wind  TITLE WZ
  WIND LOAD Z 1 TYPE 1
  WIND LOAD Z -1 TYPE 1
  LOAD 5 LOADTYPE Dead  TITLE DL
  SELFWEIGHT Y -1
  LOAD 6 LOADTYPE Live  TITLE LL
  FLOOR LOAD
  YRANGE 0 18 FLOAD -3 GY
  LOAD COMB 7 COMBINATION LOAD CASE 7
  5 1.2 1 1.2 3 1.2
  FINISH

• Help with this error
• STAAD SPACE
  START JOB INFORMATION
  ENGINEER DATE 08-Mar-21
  END JOB INFORMATION
  INPUT WIDTH 79
  UNIT METER KN
  JOINT COORDINATES
  1 23.5 0 0; 2 28.2 0 0; 3 23.5 0 1.67; 4 28.2 0 2.7; 5 28.2 0 5.6;
  6 23.5 0 5.6; 7 18.8 1 2.7; 8 23.5 1 2.7; 9 18.8 1 4.37; 11 23.5 1 8.3;
  12 18.8 1 8.3; 13 14.1 2 5.4; 14 18.8 2 5.4; 15 14.1 2 7.07; 17 18.8 2 11;
  18 14.1 2 11; 19 9.4 3 8.1; 20 14.1 3 8.1; 21 9.4 3 9.77; 23 14.1 3 13.7;
  24 9.4 3 13.7; 25 4.7 4 10.8; 26 9.4 4 10.8; 27 4.7 4 12.47; 29 9.4 4 16.4;
  30 4.7 4 16.4; 31 0 3 13.5; 32 4.7 3 13.5; 33 0 3 15.17; 35 4.7 3 19.1;
  36 0 3 19.1; 37 23.5 3.5 0; 38 28.2 3.5 0; 39 23.5 3.5 1.67; 40 28.2 3.5 2.7;
  41 28.2 3.5 5.6; 42 23.5 3.5 5.6; 43 18.8 4.5 2.7; 44 23.5 4.5 2.7;
  45 18.8 4.5 4.37; 46 23.5 4.5 8.3; 47 18.8 4.5 8.3; 48 14.1 5.5 5.4;
  49 18.8 5.5 5.4; 50 14.1 5.5 7.07; 51 18.8 5.5 11; 52 14.1 5.5 11;
  53 9.4 6.5 8.1; 54 14.1 6.5 8.1; 55 9.4 6.5 9.77; 56 14.1 6.5 13.7;
  57 9.4 6.5 13.7; 58 4.7 7.5 10.8; 59 9.4 7.5 10.8; 60 4.7 7.5 12.47;
  61 9.4 7.5 16.4; 62 4.7 7.5 16.4; 63 0 6.5 13.5; 64 4.7 6.5 13.5;
  65 0 6.5 15.17; 66 4.7 6.5 19.1; 67 0 6.5 19.1; 68 23.5 4.5 5.6;
  69 18.8 5.5 8.3; 70 14.1 6.5 11; 71 9.4 7.5 13.7; 91 7.05 9.2625 10.2;
  92 7.05 9.2625 17; 93 8.8 8.8245 10.2; 96 10 8.5245 17; 97 10 8.5245 14.3;
  98 14.7 7.3495 14.3; 99 14.7 7.3495 11.6; 100 19.4 6.1745 11.6;
  101 19.4 6.1745 8.9; 102 24.1 4.9995 8.9; 104 24.1 4.9995 6.2;
  105 8.8 8.8245 7.5; 106 13.5 7.6495 7.5; 107 13.5 7.6495 4.8;
  108 18.2 6.4745 4.8; 109 18.2 6.4745 2.1; 110 22.9 5.2995 2.1;
  111 22.9 5.2995 -0.6; 112 28.8 3.8245 -0.6; 113 28.8 3.8245 6.2;
  114 4.1 8.525 10.2; 116 4.1 8.525 12.8; 117 -0.6 7.35 12.8; 118 5.3 8.825 17;
  119 5.3 8.825 19.7; 120 -0.6 7.35 19.7; 123 9.4 8.6 16.4; 124 4.7 8.6 16.4;
  125 4.7 8.6 12.47; 126 28.2 4 0; 127 28.2 4 5.6; 128 23.5 5.2 1.67;
  129 23.5 5.2 5.6; 130 23.5 5.2 8.3; 131 18.8 6.3 4.37; 132 18.8 6.3 8.3;
  133 18.8 6.3 11; 134 14.1 7.5 13.7; 135 0 7.5 19.1; 136 0 7.5 15.17;
  137 4.7 8.5 19.1; 138 14.1 7.5 7.07; 139 9.4 8.5 9.77; 140 7.05 9.2625 10.3;
  141 7.05 9.2625 17.1;
  MEMBER INCIDENCES
  1 1 2; 2 1 3; 3 2 4; 4 4 5; 5 5 6; 6 3 6; 7 7 8; 8 7 9; 11 11 12; 12 9 12;
  13 13 14; 14 13 15; 17 17 18; 18 15 18; 19 19 20; 20 19 21; 23 23 24; 24 21 24;
  25 25 26; 26 25 27; 29 29 30; 30 27 30; 31 31 32; 32 31 33; 35 35 36; 36 33 36;
  37 32 35; 38 26 29; 39 20 23; 40 14 17; 41 8 11; 43 2 38; 44 3 39; 45 4 40;
  46 5 41; 47 6 42; 50 9 45; 51 11 46; 52 12 47; 55 15 50; 56 17 51; 57 18 52;
  60 21 55; 61 23 56; 62 24 57; 65 27 60; 66 29 61; 67 30 62; 70 33 65; 71 35 66;
  72 36 67; 73 37 38; 74 37 39; 75 38 40; 76 40 41; 77 41 42; 78 39 42; 79 43 44;
  80 43 45; 81 46 47; 82 45 47; 83 48 49; 84 48 50; 85 51 52; 86 50 52; 87 53 54;
  88 53 55; 89 56 57; 90 55 57; 91 58 59; 92 58 60; 93 61 62; 94 60 62; 95 63 64;
  96 63 65; 97 66 67; 98 65 67; 99 64 66; 100 59 71; 101 54 70; 102 49 69;
  103 44 68; 104 68 46; 105 42 68; 106 69 51; 107 47 69; 108 70 56; 109 52 70;
  110 71 61; 111 57 71; 139 61 123; 140 62 124; 141 60 125; 142 38 126;
  143 41 127; 144 39 128; 145 42 129; 146 46 130; 147 45 131; 148 47 132;
  149 51 133; 150 56 134; 151 67 135; 152 65 136; 153 66 137; 154 50 138;
  155 55 139;
  ELEMENT INCIDENCES SHELL
  131 37 38 41 42; 132 43 44 46 47; 133 48 49 51 52; 134 53 54 56 57;
  135 58 59 61 62; 136 63 64 66 67;
  SURFACE INCIDENCE
  91 93 105 106 107 108 109 110 111 112 113 104 102 101 100 99 98 97 96 92 -
  SURFACE 1
  140 114 116 117 120 119 118 141 SURFACE 2
  ELEMENT PROPERTY
  131 TO 136 THICKNESS 0.125
  DEFINE MATERIAL START
  ISOTROPIC CONCRETE
  E 2.17185e+007
  POISSON 0.17
  DENSITY 23.5616
  ALPHA 1e-005
  DAMP 0.05
  TYPE CONCRETE
  STRENGTH FCU 27579
  END DEFINE MATERIAL
  MEMBER PROPERTY AMERICAN
  43 TO 47 50 TO 52 55 TO 57 60 TO 62 65 TO 67 70 TO 72 105 107 109 111 139 -
  140 TO 155 PRIS YD 0.23 ZD 0.4
  1 TO 8 11 TO 14 17 TO 20 23 TO 26 29 TO 32 35 TO 41 73 TO 104 106 108 -
  110 PRIS YD 0.23 ZD 0.35
  SURFACE PROPERTY
  1 2 THICKNESS 0.125
  CONSTANTS
  MATERIAL CONCRETE ALL
  SURFACE CONSTANTS
  MATERIAL CONCRETE ALL
  SUPPORTS
  1 TO 7 9 11 TO 13 15 17 TO 19 21 23 TO 25 27 29 TO 31 33 35 36 FIXED
  DEFINE 1893 LOAD
  ZONE 0.16 RF 5 I 1 SS 1 ST 1 DM 0.05
  SELFWEIGHT 1
  MEMBER WEIGHT
  1 TO 8 11 TO 14 17 TO 20 23 TO 26 29 TO 32 35 TO 41 73 TO 104 106 108 -
  110 UNI 1.725
  DEFINE WIND LOAD
  TYPE 1 WIND 1
  <! STAAD PRO GENERATED DATA DO NOT MODIFY !!!
  ASCE-7-2010:PARAMS 44.000 MPH 0 1 3 0 0.000 FT 0.000 FT 0.000 FT 1 -
  1 3.500 M 28.500 M 19.600 M 2.000 0.010 0 -
  0 0 0 0 0.575 1.000 1.000 0.850 0 -
  0 0 0 0.861 0.800 -0.550
  !> END GENERATED DATA BLOCK
  INT 0.143583 0.143583 HEIG  0  4.572
  EXP 1 JOINT 1 TO 9 11 TO 15 17 TO 21 23 TO 27 29 TO 33 35 TO 71 91 TO 93 96 -
  97 TO 102 104 TO 114 116 TO 120 123 TO 139
  LOAD 1 LOADTYPE Seismic  TITLE EQ X
  1893 LOAD X 1
  LOAD 2 LOADTYPE Seismic  TITLE EQ Z
  1893 LOAD Z 1
  LOAD 3 LOADTYPE Wind  TITLE WX
  WIND LOAD X 1 TYPE 1
  WIND LOAD X -1 TYPE 1
  LOAD 4 LOADTYPE Wind  TITLE WZ
  WIND LOAD Z 1 TYPE 1
  WIND LOAD Z -1 TYPE 1
  LOAD 5 LOADTYPE Dead  TITLE DL
  SELFWEIGHT Y -1
  LOAD 6 LOADTYPE Live  TITLE LL
  FLOOR LOAD
  YRANGE 0 18 FLOAD -3 GY
  LOAD COMB 7 COMBINATION LOAD CASE 7
  5 1.2 1 1.2 3 1.2
  FINISH

STAAD.Pro V8i is not supported anymore, The latest version is STAAD.Pro CONNECT Edition version 22.05.00.131 and we recommend in using it. Please note that surfaces have been deprecated from STAAD.Pro CONNECT Edition and walls should be modeled by using plate elements (Parametric Models tool).