Structural analysis - Beam design defining parameters

Sir/Madam,

I need some clarification on the beam design and deflection parameters defining in STAAD Pro.

In the model, I have used  IS 800 (Limit state method) as the design code check.

My requirement is I want beam no. 83 , 84 & 81 to be considered as single beam in design checking .

So I defined beam no. 83 , 84 & 81 with LZ 2.5m  and

For deflection check  I defined beam no. 83 , 84 & 81 with DJ1 as 37 & DJ2 as 44.

Whether this way of defining is correct??

Consider beam no . 83

I have defined DFF as 325

Deflection length (dff) should be the distance between the defined nodes ( i.e here it should be between DJ1 & DJ2 defined ) but in the output file it is giving some other value ( 6817) ?? Whether my defining way is wrong ? 

Pls. clarify and correct my defining parameters.

I have attached the model.

STAAD SPACE

START JOB INFORMATION

ENGINEER DATE 29-Sep-17

END JOB INFORMATION

INPUT WIDTH 79

UNIT METER KN

JOINT COORDINATES

1 0 0 0; 2 0 0 2.5; 3 2.5 0 0; 4 2.5 0 2.5; 5 0 4.3 0; 6 0 4.3 2.5;

7 2.5 4.3 0; 8 2.5 4.3 2.5; 9 0 8.6 0; 10 0 8.6 2.5; 11 2.5 8.6 0;

12 2.5 8.6 2.5; 13 0 8.6 1.25; 14 2.5 8.6 1.25; 15 1.25 8.6 0; 16 1.25 8.6 2.5;

17 1.25 4.3 0; 18 0 4.3 1.25; 19 1.25 4.3 2.5; 20 2.5 4.3 1.25; 21 0 10.975 0;

22 0 10.975 2.5; 23 2.5 10.975 0; 24 2.5 10.975 2.5; 37 0.5 10.975 0;

38 1 10.975 0; 39 1.5 10.975 0; 40 2 10.975 0; 41 2 10.975 2.5;

42 1.5 10.975 2.5; 43 1 10.975 2.5; 44 0.5 10.975 2.5; 45 0 10.975 2;

46 0 10.975 0.5; 47 2.5 10.975 2; 48 2.5 10.975 0.5; 49 0.5 10.975 0.5;

50 0.5 10.975 2; 51 2 10.975 0.5; 52 2 10.975 2; 53 1 10.975 0.5;

54 1.5 10.975 0.5; 55 1 10.975 2; 56 1.5 10.975 2;

MEMBER INCIDENCES

1 1 5; 2 2 6; 3 3 7; 4 4 8; 5 5 17; 6 7 20; 7 8 19; 8 6 18; 9 5 9; 10 6 10;

11 7 11; 12 8 12; 13 9 15; 14 11 14; 15 12 16; 16 10 13; 17 1 2; 18 2 4;

19 4 3; 20 1 3; 21 13 9; 22 14 12; 23 15 11; 24 16 10; 25 17 7; 26 18 5;

27 19 6; 28 20 8; 29 5 13; 30 13 6; 31 6 16; 32 16 8; 33 8 14; 34 14 7;

35 7 15; 36 15 5; 37 1 18; 38 18 2; 39 20 3; 40 20 4; 41 9 21; 42 10 22;

43 12 24; 44 11 23; 45 21 37; 46 24 47; 47 24 41; 48 22 45; 69 37 38; 70 38 39;

71 39 40; 72 40 23; 73 41 42; 74 42 43; 75 43 44; 76 44 22; 77 45 46; 78 46 21;

79 47 48; 80 48 23; 81 37 49; 82 40 51; 83 49 50; 84 50 44; 85 51 52; 86 52 41;

87 49 53; 88 50 55; 89 52 47; 90 51 48; 91 46 49; 92 45 50; 93 53 54; 94 54 51;

95 55 56; 96 56 52; 97 38 53; 98 39 54; 99 43 55; 100 42 56;

START USER TABLE

TABLE 1 COLUMN.UPT

END

DEFINE MATERIAL START

ISOTROPIC STEEL

E 2.05e+008

POISSON 0.3

DENSITY 76.8195

ALPHA 1.2e-005

DAMP 0.03

TYPE STEEL

STRENGTH FY 253200 FU 407800 RY 1.5 RT 1.2

END DEFINE MATERIAL

MEMBER PROPERTY INDIAN

45 TO 48 69 TO 100 TABLE ST ISMB400

5 TO 8 13 TO 28 TABLE ST ISMB250

MEMBER PROPERTY INDIAN

29 TO 40 TABLE SD ISA150X150X10

MEMBER PROPERTY INDIAN

1 TO 4 9 TO 12 41 TO 44 TABLE ST ISMB400

CONSTANTS

MATERIAL STEEL ALL

SUPPORTS

1 TO 4 FIXED

LOAD 1 LOADTYPE None  TITLE LOAD CASE 1

MEMBER LOAD

83 85 87 88 93 TO 96 UNI GY -40

JOINT LOAD

21 TO 24 FY -20

FLOOR LOAD

YRANGE 0.2 4.3 FLOAD -7.5 GY

YRANGE 4.5 9 FLOAD -7.5 GY

YRANGE 12 15 FLOAD -7.5 GY

YRANGE 16 20 FLOAD -7.5 GY

SELFWEIGHT Y -1

PERFORM ANALYSIS PRINT STATICS CHECK

PARAMETER 1

CODE IS800 LSD

TRACK 2 ALL

LZ 2.5 MEMB 81 TO 86

LZ 2.5 MEMB 45 47 69 TO 76

LZ 1.5 MEMB 87 88 93 TO 96

DJ1 44 MEMB 81 83 84

DJ1 37 MEMB 81 83 84

DJ1 41 MEMB 82 85 86

DJ1 40 MEMB 82 85 86

DJ1 23 MEMB 45 69 TO 72

DJ1 21 MEMB 45 69 TO 72

DJ1 24 MEMB 47 73 TO 76

DJ1 22 MEMB 47 73 TO 76

DFF 325 ALL

MAIN -1 MEMB 29 TO 40

CHECK CODE ALL

FINISH

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