EX. US-23 Spring Support Generation for a Slab on Grade
This example illustrates the usage of commands necessary to automatically generate spring supports for a slab on grade. The slab is subjected to pressure loading and analysis of the structure is performed.
This problem is installed with the program by default to C:\Users\Public\Public Documents\STAAD.Pro 2024\Samples \Sample Models\US\US-23 Spring Support Generation for a Slab on Grade.STD when you install the program.
- H = 129', h1 = 8'-6", h2 = 8', h3 = 6'
- V = 40', v1 = 6'-6", v2 = 6', v3 = 7'-10", v4 = 4'
UNIT FEET KIP
The units for the data that follows are specified above.
JOINT COORDINATES
1 0.0 0.0 40.0
2 0.0 0.0 36.0
3 0.0 0.0 28.167
4 0.0 0.0 20.333
5 0.0 0.0 12.5
6 0.0 0.0 6.5
7 0.0 0.0 0.0
REPEAT ALL 3 8.5 0.0 0.0
REPEAT 3 8.0 0.0 0.0
REPEAT 5 6.0 0.0 0.0
REPEAT 3 8.0 0.0 0.0
REPEAT 3 8.5 0.0 0.0
For joints 1 through 7, the joint number followed by the X, Y, and Z coordinates are specified above. The coordinates of these joints is used as a basis for generating 21 more joints by incrementing the X coordinate of each of these seven joints by 8.5 feet, three times
REPEAT
commands are used to generate the remaining joints of the structure. The results of the generation may be visually verified using the STAAD graphical viewing facilities.
ELEMENT INCIDENCES
1 1 8 9 2 TO 6
REPEAT 16 6 7
The incidences of element number 1 is defined and that data is used as a basis for generating the 2nd through the 6th element. The incidence pattern of the first six elements is then used to generate the incidences of 96 (= 16 x 6) more elements using the REPEAT
command.
UNIT INCH
ELEMENT PROPERTIES
1 TO 102 TH 5.5
The thickness of elements 1 to 102 is specified as 5.5 inches following the command ELEMENT PROPERTIES
.
DEFINE MATERIAL START
ISOTROPIC CONCRETE
E 2916.7
POISSON 0.12
DENSITY 8.68e-005
ALPHA 5e-006
DAMP 0.05
G 1346.15
TYPE CONCRETE
STRENGTH FCU 4
END DEFINE MATERIAL
CONSTANTS
MATERIAL CONCRETE ALL
UNIT FEET
The DEFINE MATERIAL
command is used to specify material properties and the CONSTANT
is used to assign the material to all members.
SUPPORTS
1 TO 126 ELASTIC MAT DIRECTION Y SUB 10.0
The above command is used to instruct STAAD to generate supports with springs which are effective in the global Y direction. These springs are located at nodes 1 to 126. The subgrade modulus of the soil is specified as 10 kip/cu.ft. The program will determine the area under the influence of each joint and multiply the influence area by the subgrade reaction to arrive at the spring stiffness for the FY degree of freedom at the joint. See TR.27.3 Automatic Spring Support Generator for Foundations .
PRINT SUPP INFO
This command will enable us to obtain the details of the support conditions which were generated using the earlier commands.
LOAD 1 WEIGHT OF MAT & EARTH
ELEMENT LOAD
1 TO 102 PR GY -1.55
The above data describe a static load case. A pressure load of 1.55 kip/sq.ft acting in the negative global Y direction is applied on all the 102 elements.
LOAD 2 'COLUMN LOAD-DL+LL'
JOINT LOADS
1 2 FY -217.
8 9 FY -109.
5 FY -308.7
6 FY -617.4
22 23 FY -410.
29 30 FY -205.
26 FY -542.7
27 FY -1085.4
43 44 50 51 71 72 78 79 FY -307.5
47 54 82 FY -264.2
48 55 76 83 FY -528.3
92 93 FY -205.0
99 100 FY -410.0
103 FY -487.0
104 FY -974.0
113 114 FY -109.0
120 121 FY -217.0
124 FY -273.3
125 FY -546.6
LOAD LIST 101
PRINT JOINT DISPLACEMENTS LIST 33 56
PRINT ELEMENT STRESSES LIST 34 67
Input File
STAAD SPACE SLAB ON GRADE
UNIT FEET KIP
JOINT COORDINATES
1 0.0 0.0 40.0
2 0.0 0.0 36.0
3 0.0 0.0 28.167
4 0.0 0.0 20.333
5 0.0 0.0 12.5
6 0.0 0.0 6.5
7 0.0 0.0 0.0
REPEAT ALL 3 8.5 0.0 0.0
REPEAT 3 8.0 0.0 0.0
REPEAT 5 6.0 0.0 0.0
REPEAT 3 8.0 0.0 0.0
REPEAT 3 8.5 0.0 0.0
ELEMENT INCIDENCES
1 1 8 9 2 TO 6
REPEAT 16 6 7
UNIT INCH
ELEMENT PROPERTIES
1 TO 102 TH 5.5
DEFINE MATERIAL START
ISOTROPIC CONCRETE
E 2916.7
POISSON 0.12
DENSITY 8.68e-005
ALPHA 5e-006
DAMP 0.05
G 1346.15
TYPE CONCRETE
STRENGTH FCU 4
END DEFINE MATERIAL
CONSTANTS
MATERIAL CONCRETE ALL
UNIT FEET
SUPPORTS
1 TO 126 ELASTIC MAT DIRECTION Y SUBGRADE 10.0
PRINT SUPP INFO
LOAD 1 'WEIGHT OF MAT & EARTH'
ELEMENT LOAD
1 TO 102 PR GY -1.55
LOAD 2 'COLUMN LOAD-DL+LL'
JOINT LOADS
1 2 FY -217.
8 9 FY -109.
5 FY -308.7
6 FY -617.4
22 23 FY -410.
29 30 FY -205.
26 FY -542.7
27 FY -1085.4
43 44 50 51 71 72 78 79 FY -307.5
47 54 82 FY -264.2
48 55 76 83 FY -528.3
92 93 FY -205.0
99 100 FY -410.0
103 FY -487.0
104 FY -974.0
113 114 FY -109.0
120 121 FY -217.0
124 FY -273.3
125 FY -546.6
LOADING COMBINATION 101 TOTAL LOAD
1 1. 2 1.
PERFORM ANALYSIS
LOAD LIST 101
PRINT JOINT DISPLACEMENTS LIST 33 56
PRINT ELEMENT STRESSES LIST 34 67
FINISH
PAGE NO. 1
****************************************************
* *
* STAAD.Pro 2023 *
* Version 23.00.03.** *
* Proprietary Program of *
* Bentley Systems, Inc. *
* Date= JUL 4, 2024 *
* Time= 11:27: 0 *
* *
* Licensed to: Bentley Systems Inc *
****************************************************
1. STAAD SPACE SLAB ON GRADE
INPUT FILE: D:\Documentation\STAAD.Pro\_Automated_Py\output\2024-07-04\SPro_Output_Input_Files\Sample .. .STD
2. UNIT FEET KIP
3. JOINT COORDINATES
4. 1 0.0 0.0 40.0
5. 2 0.0 0.0 36.0
6. 3 0.0 0.0 28.167
7. 4 0.0 0.0 20.333
8. 5 0.0 0.0 12.5
9. 6 0.0 0.0 6.5
10. 7 0.0 0.0 0.0
11. REPEAT ALL 3 8.5 0.0 0.0
12. REPEAT 3 8.0 0.0 0.0
13. REPEAT 5 6.0 0.0 0.0
14. REPEAT 3 8.0 0.0 0.0
15. REPEAT 3 8.5 0.0 0.0
16. ELEMENT INCIDENCES
17. 1 1 8 9 2 TO 6
18. REPEAT 16 6 7
19. UNIT INCH
20. ELEMENT PROPERTIES
21. 1 TO 102 TH 5.5
22. DEFINE MATERIAL START
23. ISOTROPIC CONCRETE
24. E 2916.7
25. POISSON 0.12
26. DENSITY 8.68E-005
27. ALPHA 5E-006
28. DAMP 0.05
29. G 1346.15
30. TYPE CONCRETE
31. STRENGTH FCU 4
32. END DEFINE MATERIAL
33. CONSTANTS
34. MATERIAL CONCRETE ALL
35. UNIT FEET
36. SUPPORTS
37. 1 TO 126 ELASTIC MAT DIRECTION Y SUBGRADE 10.0
38. PRINT SUPP INFO
SLAB ON GRADE -- PAGE NO. 2
SUPP INFO
SUPPORT INFORMATION (1=FIXED, 0=RELEASED)
-------------------
UNITS FOR SPRING CONSTANTS ARE KIP FEET DEGREES
JOINT FORCE-X/ FORCE-Y/ FORCE-Z/ MOM-X/ MOM-Y/ MOM-Z/
KFX KFY KFZ KMX KMY KMZ
1 1 0 1 0 1 0
0.0 85.0 0.0 0.0 0.0 0.0
2 1 0 1 0 1 0
0.0 251.5 0.0 0.0 0.0 0.0
3 1 0 1 0 1 0
0.0 332.9 0.0 0.0 0.0 0.0
4 1 0 1 0 1 0
0.0 332.9 0.0 0.0 0.0 0.0
5 1 0 1 0 1 0
0.0 294.0 0.0 0.0 0.0 0.0
6 1 0 1 0 1 0
0.0 265.6 0.0 0.0 0.0 0.0
7 1 0 1 0 1 0
0.0 138.1 0.0 0.0 0.0 0.0
8 1 0 1 0 1 0
0.0 170.0 0.0 0.0 0.0 0.0
9 1 0 1 0 1 0
0.0 502.9 0.0 0.0 0.0 0.0
10 1 0 1 0 1 0
0.0 665.8 0.0 0.0 0.0 0.0
11 1 0 1 0 1 0
0.0 665.8 0.0 0.0 0.0 0.0
12 1 0 1 0 1 0
0.0 587.9 0.0 0.0 0.0 0.0
13 1 0 1 0 1 0
0.0 531.2 0.0 0.0 0.0 0.0
14 1 0 1 0 1 0
0.0 276.2 0.0 0.0 0.0 0.0
15 1 0 1 0 1 0
0.0 170.0 0.0 0.0 0.0 0.0
16 1 0 1 0 1 0
0.0 502.9 0.0 0.0 0.0 0.0
17 1 0 1 0 1 0
0.0 665.8 0.0 0.0 0.0 0.0
18 1 0 1 0 1 0
0.0 665.8 0.0 0.0 0.0 0.0
19 1 0 1 0 1 0
0.0 587.9 0.0 0.0 0.0 0.0
20 1 0 1 0 1 0
0.0 531.2 0.0 0.0 0.0 0.0
21 1 0 1 0 1 0
0.0 276.2 0.0 0.0 0.0 0.0
22 1 0 1 0 1 0
0.0 165.0 0.0 0.0 0.0 0.0
SLAB ON GRADE -- PAGE NO. 3
23 1 0 1 0 1 0
0.0 488.1 0.0 0.0 0.0 0.0
24 1 0 1 0 1 0
0.0 646.3 0.0 0.0 0.0 0.0
25 1 0 1 0 1 0
0.0 646.3 0.0 0.0 0.0 0.0
26 1 0 1 0 1 0
0.0 570.6 0.0 0.0 0.0 0.0
27 1 0 1 0 1 0
0.0 515.6 0.0 0.0 0.0 0.0
28 1 0 1 0 1 0
0.0 268.1 0.0 0.0 0.0 0.0
29 1 0 1 0 1 0
0.0 160.0 0.0 0.0 0.0 0.0
30 1 0 1 0 1 0
0.0 473.3 0.0 0.0 0.0 0.0
31 1 0 1 0 1 0
0.0 626.7 0.0 0.0 0.0 0.0
32 1 0 1 0 1 0
0.0 626.7 0.0 0.0 0.0 0.0
33 1 0 1 0 1 0
0.0 553.3 0.0 0.0 0.0 0.0
34 1 0 1 0 1 0
0.0 500.0 0.0 0.0 0.0 0.0
35 1 0 1 0 1 0
0.0 260.0 0.0 0.0 0.0 0.0
36 1 0 1 0 1 0
0.0 160.0 0.0 0.0 0.0 0.0
37 1 0 1 0 1 0
0.0 473.3 0.0 0.0 0.0 0.0
38 1 0 1 0 1 0
0.0 626.7 0.0 0.0 0.0 0.0
39 1 0 1 0 1 0
0.0 626.7 0.0 0.0 0.0 0.0
40 1 0 1 0 1 0
0.0 553.3 0.0 0.0 0.0 0.0
41 1 0 1 0 1 0
0.0 500.0 0.0 0.0 0.0 0.0
42 1 0 1 0 1 0
0.0 260.0 0.0 0.0 0.0 0.0
43 1 0 1 0 1 0
0.0 140.0 0.0 0.0 0.0 0.0
44 1 0 1 0 1 0
0.0 414.2 0.0 0.0 0.0 0.0
45 1 0 1 0 1 0
0.0 548.3 0.0 0.0 0.0 0.0
46 1 0 1 0 1 0
0.0 548.3 0.0 0.0 0.0 0.0
47 1 0 1 0 1 0
0.0 484.2 0.0 0.0 0.0 0.0
48 1 0 1 0 1 0
0.0 437.5 0.0 0.0 0.0 0.0
49 1 0 1 0 1 0
0.0 227.5 0.0 0.0 0.0 0.0
50 1 0 1 0 1 0
0.0 120.0 0.0 0.0 0.0 0.0
SLAB ON GRADE -- PAGE NO. 4
51 1 0 1 0 1 0
0.0 355.0 0.0 0.0 0.0 0.0
52 1 0 1 0 1 0
0.0 470.0 0.0 0.0 0.0 0.0
53 1 0 1 0 1 0
0.0 470.0 0.0 0.0 0.0 0.0
54 1 0 1 0 1 0
0.0 415.0 0.0 0.0 0.0 0.0
55 1 0 1 0 1 0
0.0 375.0 0.0 0.0 0.0 0.0
56 1 0 1 0 1 0
0.0 195.0 0.0 0.0 0.0 0.0
57 1 0 1 0 1 0
0.0 120.0 0.0 0.0 0.0 0.0
58 1 0 1 0 1 0
0.0 355.0 0.0 0.0 0.0 0.0
59 1 0 1 0 1 0
0.0 470.0 0.0 0.0 0.0 0.0
60 1 0 1 0 1 0
0.0 470.0 0.0 0.0 0.0 0.0
61 1 0 1 0 1 0
0.0 415.0 0.0 0.0 0.0 0.0
62 1 0 1 0 1 0
0.0 375.0 0.0 0.0 0.0 0.0
63 1 0 1 0 1 0
0.0 195.0 0.0 0.0 0.0 0.0
64 1 0 1 0 1 0
0.0 120.0 0.0 0.0 0.0 0.0
65 1 0 1 0 1 0
0.0 355.0 0.0 0.0 0.0 0.0
66 1 0 1 0 1 0
0.0 470.0 0.0 0.0 0.0 0.0
67 1 0 1 0 1 0
0.0 470.0 0.0 0.0 0.0 0.0
68 1 0 1 0 1 0
0.0 415.0 0.0 0.0 0.0 0.0
69 1 0 1 0 1 0
0.0 375.0 0.0 0.0 0.0 0.0
70 1 0 1 0 1 0
0.0 195.0 0.0 0.0 0.0 0.0
71 1 0 1 0 1 0
0.0 120.0 0.0 0.0 0.0 0.0
72 1 0 1 0 1 0
0.0 355.0 0.0 0.0 0.0 0.0
73 1 0 1 0 1 0
0.0 470.0 0.0 0.0 0.0 0.0
74 1 0 1 0 1 0
0.0 470.0 0.0 0.0 0.0 0.0
75 1 0 1 0 1 0
0.0 415.0 0.0 0.0 0.0 0.0
76 1 0 1 0 1 0
0.0 375.0 0.0 0.0 0.0 0.0
77 1 0 1 0 1 0
0.0 195.0 0.0 0.0 0.0 0.0
78 1 0 1 0 1 0
0.0 140.0 0.0 0.0 0.0 0.0
SLAB ON GRADE -- PAGE NO. 5
79 1 0 1 0 1 0
0.0 414.2 0.0 0.0 0.0 0.0
80 1 0 1 0 1 0
0.0 548.3 0.0 0.0 0.0 0.0
81 1 0 1 0 1 0
0.0 548.3 0.0 0.0 0.0 0.0
82 1 0 1 0 1 0
0.0 484.2 0.0 0.0 0.0 0.0
83 1 0 1 0 1 0
0.0 437.5 0.0 0.0 0.0 0.0
84 1 0 1 0 1 0
0.0 227.5 0.0 0.0 0.0 0.0
85 1 0 1 0 1 0
0.0 160.0 0.0 0.0 0.0 0.0
86 1 0 1 0 1 0
0.0 473.3 0.0 0.0 0.0 0.0
87 1 0 1 0 1 0
0.0 626.7 0.0 0.0 0.0 0.0
88 1 0 1 0 1 0
0.0 626.7 0.0 0.0 0.0 0.0
89 1 0 1 0 1 0
0.0 553.3 0.0 0.0 0.0 0.0
90 1 0 1 0 1 0
0.0 500.0 0.0 0.0 0.0 0.0
91 1 0 1 0 1 0
0.0 260.0 0.0 0.0 0.0 0.0
92 1 0 1 0 1 0
0.0 160.0 0.0 0.0 0.0 0.0
93 1 0 1 0 1 0
0.0 473.3 0.0 0.0 0.0 0.0
94 1 0 1 0 1 0
0.0 626.7 0.0 0.0 0.0 0.0
95 1 0 1 0 1 0
0.0 626.7 0.0 0.0 0.0 0.0
96 1 0 1 0 1 0
0.0 553.3 0.0 0.0 0.0 0.0
97 1 0 1 0 1 0
0.0 500.0 0.0 0.0 0.0 0.0
98 1 0 1 0 1 0
0.0 260.0 0.0 0.0 0.0 0.0
99 1 0 1 0 1 0
0.0 165.0 0.0 0.0 0.0 0.0
100 1 0 1 0 1 0
0.0 488.1 0.0 0.0 0.0 0.0
101 1 0 1 0 1 0
0.0 646.3 0.0 0.0 0.0 0.0
102 1 0 1 0 1 0
0.0 646.3 0.0 0.0 0.0 0.0
103 1 0 1 0 1 0
0.0 570.6 0.0 0.0 0.0 0.0
104 1 0 1 0 1 0
0.0 515.6 0.0 0.0 0.0 0.0
105 1 0 1 0 1 0
0.0 268.1 0.0 0.0 0.0 0.0
106 1 0 1 0 1 0
0.0 170.0 0.0 0.0 0.0 0.0
SLAB ON GRADE -- PAGE NO. 6
107 1 0 1 0 1 0
0.0 502.9 0.0 0.0 0.0 0.0
108 1 0 1 0 1 0
0.0 665.8 0.0 0.0 0.0 0.0
109 1 0 1 0 1 0
0.0 665.8 0.0 0.0 0.0 0.0
110 1 0 1 0 1 0
0.0 587.9 0.0 0.0 0.0 0.0
111 1 0 1 0 1 0
0.0 531.2 0.0 0.0 0.0 0.0
112 1 0 1 0 1 0
0.0 276.2 0.0 0.0 0.0 0.0
113 1 0 1 0 1 0
0.0 170.0 0.0 0.0 0.0 0.0
114 1 0 1 0 1 0
0.0 502.9 0.0 0.0 0.0 0.0
115 1 0 1 0 1 0
0.0 665.8 0.0 0.0 0.0 0.0
116 1 0 1 0 1 0
0.0 665.8 0.0 0.0 0.0 0.0
117 1 0 1 0 1 0
0.0 587.9 0.0 0.0 0.0 0.0
118 1 0 1 0 1 0
0.0 531.2 0.0 0.0 0.0 0.0
119 1 0 1 0 1 0
0.0 276.2 0.0 0.0 0.0 0.0
120 1 0 1 0 1 0
0.0 85.0 0.0 0.0 0.0 0.0
121 1 0 1 0 1 0
0.0 251.5 0.0 0.0 0.0 0.0
122 1 0 1 0 1 0
0.0 332.9 0.0 0.0 0.0 0.0
123 1 0 1 0 1 0
0.0 332.9 0.0 0.0 0.0 0.0
124 1 0 1 0 1 0
0.0 294.0 0.0 0.0 0.0 0.0
125 1 0 1 0 1 0
0.0 265.6 0.0 0.0 0.0 0.0
126 1 0 1 0 1 0
0.0 138.1 0.0 0.0 0.0 0.0
************ END OF DATA FROM INTERNAL STORAGE ************
39. LOAD 1 'WEIGHT OF MAT & EARTH'
40. ELEMENT LOAD
41. 1 TO 102 PR GY -1.55
42. LOAD 2 'COLUMN LOAD-DL+LL'
43. JOINT LOADS
44. 1 2 FY -217.
45. 8 9 FY -109.
46. 5 FY -308.7
47. 6 FY -617.4
SLAB ON GRADE -- PAGE NO. 7
48. 22 23 FY -410.
49. 29 30 FY -205.
50. 26 FY -542.7
51. 27 FY -1085.4
52. 43 44 50 51 71 72 78 79 FY -307.5
53. 47 54 82 FY -264.2
54. 48 55 76 83 FY -528.3
55. 92 93 FY -205.0
56. 99 100 FY -410.0
57. 103 FY -487.0
58. 104 FY -974.0
59. 113 114 FY -109.0
60. 120 121 FY -217.0
61. 124 FY -273.3
62. 125 FY -546.6
63. LOADING COMBINATION 101 TOTAL LOAD
64. 1 1. 2 1.
65. PERFORM ANALYSIS
P R O B L E M S T A T I S T I C S
-----------------------------------
NUMBER OF JOINTS 126 NUMBER OF MEMBERS 0
NUMBER OF PLATES 102 NUMBER OF SOLIDS 0
NUMBER OF SURFACES 0 NUMBER OF SUPPORTS 126
Using 64-bit analysis engine.
SOLVER USED IS THE IN-CORE ADVANCED MATH SOLVER
TOTAL PRIMARY LOAD CASES = 2, TOTAL DEGREES OF FREEDOM = 378
TOTAL LOAD COMBINATION CASES = 1 SO FAR.
66. LOAD LIST 101
67. PRINT JOINT DISPLACEMENTS LIST 33 56
JOINT DISPLACE LIST 33
SLAB ON GRADE -- PAGE NO. 8
JOINT DISPLACEMENT (INCH RADIANS) STRUCTURE TYPE = SPACE
------------------
JOINT LOAD X-TRANS Y-TRANS Z-TRANS X-ROTAN Y-ROTAN Z-ROTAN
33 101 0.00000 -4.73840 0.00000 -0.03240 0.00000 0.06201
56 101 0.00000 -5.63562 0.00000 0.07103 0.00000 0.03210
************** END OF LATEST ANALYSIS RESULT **************
68. PRINT ELEMENT STRESSES LIST 34 67
ELEMENT STRESSES LIST 34
SLAB ON GRADE -- PAGE NO. 9
ELEMENT STRESSES FORCE,LENGTH UNITS= KIP FEET
----------------
STRESS = FORCE/UNIT WIDTH/THICK, MOMENT = FORCE-LENGTH/UNIT WIDTH
ELEMENT LOAD SQX SQY MX MY MXY
VONT VONB SX SY SXY
TRESCAT TRESCAB
34 101 -6.17 -8.28 0.84 4.63 10.89
552.32 552.32 0.00 0.00 0.00
631.36 631.36
TOP : SMAX= 393.78 SMIN= -237.58 TMAX= 315.68 ANGLE= 49.9
BOTT: SMAX= 237.58 SMIN= -393.78 TMAX= 315.68 ANGLE=-40.1
67 101 72.18 7.72 15.02 9.75 22.08
1155.35 1155.35 0.00 0.00 0.00
1269.99 1269.99
TOP : SMAX= 988.79 SMIN= -281.20 TMAX= 635.00 ANGLE= 41.6
BOTT: SMAX= 281.20 SMIN= -988.79 TMAX= 635.00 ANGLE=-48.4
**** MAXIMUM STRESSES AMONG SELECTED PLATES AND CASES ****
MAXIMUM MINIMUM MAXIMUM MAXIMUM MAXIMUM
PRINCIPAL PRINCIPAL SHEAR VONMISES TRESCA
STRESS STRESS STRESS STRESS STRESS
9.887888E+02 -9.887888E+02 6.349952E+02 1.155347E+03 1.269990E+03
PLATE NO. 67 67 67 67 67
CASE NO. 101 101 101 101 101
********************END OF ELEMENT FORCES********************
69. FINISH
SLAB ON GRADE -- PAGE NO. 10
*********** END OF THE STAAD.Pro RUN ***********
**** DATE= JUL 4,2024 TIME= 11:27: 1 ****
************************************************************
* For technical assistance on STAAD.Pro, please visit *
* http://www.bentley.com/en/support/ *
* *
* Details about additional assistance from *
* Bentley and Partners can be found at program menu *
* Help->Technical Support *
* *
* Copyright (c) Bentley Systems, Inc. *
* http://www.bentley.com *
************************************************************