V. AISC 360-05 Tapered Tube Section

Verify the axial compression capacity, flexure capacity, and interaction ratio of a tapered tube section member per both the LRFD and ASD methods of the AISC 360-05 code.

Details

A 5' × 5' portal frame consists of W12x72 columns and a steel tapered member for the beam.

The following load cases are evaluated:
1. A uniformly distributed load of -2.25 k/in along the beam in the global Y direction.
2. Lateral loads at the top of the left column of 50 kips in the global X direction and 25 kips in the global Z direction (out of plane).
3. A concreted torque of 0.75 in·kips at mid-span of the beam.
Material Properties
• E = 29,000 ksi
• Fy = 50 ksi

Validation

Design Forces

By inspection, the right end of the beam (shallowest overall depth) governs under the symmetric loads present. The following design loads are used from the STAAD.Pro analysis are then used:
• Mz = 505.66 in·kips
• Fy = 67.2 kips
• Fx = 10.23 kips

Section Properties

The section at the right end (OD = 10 in.) has the following properties:

• Inner diameter, ID = 9 in.
• Area, Ag = (π/4)(OD2 - ID2) = 14.92 in2
• Form factor = 0.49 + 0.8 (t / OD) = 0.53
• Shear area, Ay = 14.92(0.53) = 7.909 in2
• Moment of inertia,
• Elastic section modulus,
• Plastic section modulus,
• HSS Torsional constant,

Section Classification

Flange in compression

$λ = OD t = 10 0.5 = 20$

Per Table B4.1-15a, $λ < λ r = 0.11 E F y = 63.8$, therefore flanges are non-slender for compression. The web is similarly non-slender for compression.

Flange in bending (use half the longer flange width as the outstanding width):

$λ = OD t = 10 0.5 = 20$

Per Table B4.1-15b, $λ < λ r = 0.07 E F y = 40.6$, therefore flange is compact for bending.

Compression Capacity

$k L r = 1.0 ( 60 ) 3.363 = 17.84 < 4.71 E F y = 4.71 29 , 000 50 = 113.4$
 (Eq. E3-4)
$F y F e = 50 899.4 = 0.056 < 2.25$
 (Eq. E3-2)

 Pn = Ag× Fcr = 14.92 × 48.85 = 729.0 kips (Eq. E3-1)

The axial capacity:
• The ultimate compression capacity (LRFD) = ϕcPn = 0.9 × 729.0 = 656.1 kips
• The allowable compression capacity (ASD) = Pnc = 729.0 / 1.67 = 436.5 kips

Shear Capacity

The distance from the maximum shear force (ends) to zero shear force (mid-span), Lv = L / 2 = 30 in.

The critical shear stress, Fcr, is the minimum of:

Fcr = 30 ksi

Nominal shear capacity:

The shear capacity:
• The ultimate shear capacity (LRFD) = ϕcVn = 0.9 × 223.8 = 201.5 kips
• The allowable shear capacity (ASD) = Vnc = 223.8 / 1.67 = 134.0 kips

Calculate Bending Capacity

Bending capacity in plastic yielding:

Mp = Fy × Z = 50 × 45.17 = 2,259 in·kips < 1.6Fy × S = 1.6 (50) (33.76) = 2,701 in·kips

The bending capacity for flexural yielding:
• The ultimate bending capacity (LRFD) = ϕbMy = 0.9 × 2,259 = 2,033 in·kips
• The allowable bending capacity (ASD) = Myb = 2,259 / 1.67 = 1,352 in·kips

Torsional Capacity

The critical stress, Fcr, is the larger of:

But shall not exceed:

Fcr = 30 ksi

Nominal torsional capacity:

The torsional capacity:
• The ultimate torsional capacity (LRFD) = ϕcTn = 0.9 × 2,126 = 1,914 kips
• The allowable torsional capacity (ASD) = Tnc = 2,126 / 1.67 = 1,273 kips

Interaction Ratio for Bending and Compression

Check the interaction ratio for Load Case 1:

So use Eq. H1-1b for both methods: $P r 2 P c + ( M r x M c x + M r y M c y ) ≤ 1.0$.

Results

Table 1.
LRFD Compression capacity (kips) 656.1 656 negligible
Shear capacity (kips) 201.5 201 negligible
Bending capacity (in·kips) 2,033 2,030 negligible
Torsional capacity (in·kips) 1,914 1,910 negligible
Interaction ratio 0.257 0.257 none
ASD Compression capacity (kips) 436.5 437 negligible
Shear capacity (kips) 134.0 134 negligible
Bending capacity (in·kips) 1,352 1,350 negligible
Torsional capacity (in·kips) 1,273 1,270 negligible
Interaction ratio 0.386 0.386 none

The following design parameters are used:

• The welded tapered member is specified using STP 2

The remaining parameters all use their default values.

The file C:\Users\Public\Public Documents\STAAD.Pro CONNECT Edition\Samples\ Verification Models\09 Steel Design\US\AISC\AISC 360-10 Tapered Tube Section.STD is typically installed with the program.

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 13-Apr-21
END JOB INFORMATION
INPUT WIDTH 79
UNIT INCHES KIP
JOINT COORDINATES
1 0 0 0; 2 0 60 0; 3 60 60 0; 4 60 0 0;
MEMBER INCIDENCES
1 1 2; 2 2 3; 3 3 4;
DEFINE MATERIAL START
ISOTROPIC STEEL
E 29000
POISSON 0.3
DENSITY 0.000283
ALPHA 6.5e-06
DAMP 0.03
G 11200
TYPE STEEL
STRENGTH RY 1.5 RT 1.2
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
1 TABLE ST W12X72
3 TABLE ST W12X72
MEMBER PROPERTY
2 PRIS ROUND STA 12 END 10 THI 0.5
CONSTANTS
MATERIAL STEEL ALL
SUPPORTS
1 FIXED
4 FIXED
2 UNI GY -2.25
2 FX 50 FZ 25
2 CMOM GX 0.75
PERFORM ANALYSIS
PRINT ANALYSIS RESULTS
PARAMETER 1
CODE AISC UNIFIED 2010
SLF 0.8 MEMB 2
FYLD 50 ALL
FU 60 ALL
METHOD LRFD
STP 2 MEMB 2
TRACK 2 MEMB 2
CHECK CODE MEMB 2
PARAMETER 2
CODE AISC UNIFIED 2010
SLF 0.8 MEMB 2
FYLD 50 ALL
FU 60 ALL
METHOD ASD
STP 2 MEMB 2
TRACK 2 MEMB 2
CHECK CODE MEMB 2
FINISH


                                                                  PAGE NO.    1
****************************************************
*                                                  *
*           Version  22.08.00.***                  *
*           Proprietary Program of                 *
*           Bentley Systems, Inc.                  *
*           Date=    OCT 19, 2021                  *
*           Time=    18:10:58                      *
*                                                  *
*  Licensed to: Bentley Systems Inc                *
****************************************************
INPUT FILE: AISC 360-10 Tapered Tube Section.STD
2. START JOB INFORMATION
3. ENGINEER DATE 13-APR-21
4. END JOB INFORMATION
5. INPUT WIDTH 79
6. UNIT INCHES KIP
7. JOINT COORDINATES
8. 1 0 0 0; 2 0 60 0; 3 60 60 0; 4 60 0 0
9. MEMBER INCIDENCES
10. 1 1 2; 2 2 3; 3 3 4
11. DEFINE MATERIAL START
12. ISOTROPIC STEEL
13. E 29000
14. POISSON 0.3
15. DENSITY 0.000283
16. ALPHA 6.5E-06
17. DAMP 0.03
18. G 11200
19. TYPE STEEL
20. STRENGTH RY 1.5 RT 1.2
21. END DEFINE MATERIAL
22. MEMBER PROPERTY AMERICAN
23. 1 TABLE ST W12X72
24. 3 TABLE ST W12X72
25. MEMBER PROPERTY
26. 2 PRIS ROUND STA 12 END 10 THI 0.5
27. CONSTANTS
28. MATERIAL STEEL ALL
29. SUPPORTS
30. 1 FIXED
31. 4 FIXED
34. 2 UNI GY -2.25
37. 2 FX 50 FZ 25
STAAD SPACE                                              -- PAGE NO.    2
40. 2 CMOM GX 0.75
41. PERFORM ANALYSIS
P R O B L E M   S T A T I S T I C S
-----------------------------------
NUMBER OF JOINTS          4  NUMBER OF MEMBERS       3
NUMBER OF PLATES          0  NUMBER OF SOLIDS        0
NUMBER OF SURFACES        0  NUMBER OF SUPPORTS      2
Using 64-bit analysis engine.
SOLVER USED IS THE IN-CORE ADVANCED MATH SOLVER
TOTAL      PRIMARY LOAD CASES =     3, TOTAL DEGREES OF FREEDOM =      12
TOTAL LOAD COMBINATION  CASES =     0  SO FAR.
42. PRINT ANALYSIS RESULTS
ANALYSIS RESULTS
STAAD SPACE                                              -- PAGE NO.    3
JOINT DISPLACEMENT (INCH RADIANS)    STRUCTURE TYPE = SPACE
------------------
JOINT  LOAD   X-TRANS   Y-TRANS   Z-TRANS   X-ROTAN   Y-ROTAN   Z-ROTAN
1    1    0.00000   0.00000   0.00000   0.00000   0.00000   0.00000
2    0.00000   0.00000   0.00000   0.00000   0.00000   0.00000
3    0.00000   0.00000   0.00000   0.00000   0.00000   0.00000
2    1    0.00162  -0.00665   0.00000   0.00000   0.00000  -0.00075
2    0.07748   0.00168   0.25417   0.00541   0.00296  -0.00079
3    0.00000   0.00000   0.00013   0.00000   0.00000   0.00000
3    1    0.00033  -0.00659   0.00000   0.00000   0.00000   0.00069
2    0.07448  -0.00168   0.07663   0.00255   0.00296  -0.00085
3    0.00000   0.00000   0.00011   0.00000   0.00000   0.00000
4    1    0.00000   0.00000   0.00000   0.00000   0.00000   0.00000
2    0.00000   0.00000   0.00000   0.00000   0.00000   0.00000
3    0.00000   0.00000   0.00000   0.00000   0.00000   0.00000
STAAD SPACE                                              -- PAGE NO.    4
SUPPORT REACTIONS -UNIT KIP  INCH    STRUCTURE TYPE = SPACE
-----------------
JOINT  LOAD   FORCE-X   FORCE-Y   FORCE-Z     MOM-X     MOM-Y     MOM Z
1    1     10.23     67.81      0.00      0.00      0.00    -89.36
2    -26.14    -17.09    -24.95  -1258.27     -1.62   1013.33
3      0.00      0.00      0.00     -0.39     -0.00      0.00
4    1    -10.23     67.19      0.00      0.00      0.00    108.13
2    -23.86     17.09     -0.05   -241.73     -1.62    961.14
3      0.00      0.00     -0.00     -0.36     -0.00      0.00
STAAD SPACE                                              -- PAGE NO.    5
MEMBER END FORCES    STRUCTURE TYPE = SPACE
-----------------
ALL UNITS ARE -- KIP  INCH     (LOCAL )
MEMBER  LOAD  JT     AXIAL   SHEAR-Y  SHEAR-Z   TORSION     MOM-Y      MOM-Z
1    1     1     67.81    -10.23     0.00      0.00      0.00     -89.36
2    -67.81     10.23     0.00      0.00      0.00    -524.44
2     1    -17.09     26.14   -24.95     -1.62   1258.27    1013.33
2     17.09    -26.14    24.95      1.62    238.50     554.84
3     1      0.00      0.00     0.00     -0.00      0.39       0.00
2      0.00      0.00    -0.00      0.00     -0.39       0.00
2    1     2     10.23     67.81     0.00      0.00      0.00     524.44
3    -10.23     67.19     0.00      0.00      0.00    -505.66
2     2     23.86    -17.09     0.05    238.50     -1.62    -554.84
3    -23.86     17.09    -0.05   -238.50     -1.62    -470.69
3     2      0.00      0.00     0.00     -0.39     -0.00       0.00
3      0.00      0.00    -0.00     -0.36     -0.00       0.00
3    1     3     67.19     10.23     0.00      0.00      0.00     505.66
4    -67.19    -10.23     0.00      0.00      0.00     108.13
2     3     17.09     23.86     0.05     -1.62    238.50     470.69
4    -17.09    -23.86    -0.05      1.62   -241.73     961.14
3     3      0.00      0.00     0.00     -0.00      0.36       0.00
4      0.00      0.00    -0.00      0.00     -0.36       0.00
************** END OF LATEST ANALYSIS RESULT **************
43. PARAMETER 1
44. CODE AISC UNIFIED 2010
45. SLF 0.8 MEMB 2
46. FYLD 50 ALL
47. FU 60 ALL
48. METHOD LRFD
49. STP 2 MEMB 2
50. TRACK 2 MEMB 2
51. CHECK CODE MEMB 2
STEEL DESIGN
WARNING: For member#      2 the profile has been selected from HSS Rect/Round (non A1085)/Pipe
tables of AISC database. Weld type is considered to be Elect-resist-weld.
Thickness is already reduced from the table. Further reductions will not be done.
STAAD SPACE                                              -- PAGE NO.    6
STAAD.PRO CODE CHECKING - (AISC-360-10-LRFD)   v1.4a
********************************************
ALL UNITS ARE - KIP  INCH (UNLESS OTHERWISE Noted)
FX            MY             MZ       LOCATION
=======================================================================
2      PRI SMAT                 (AISC SECTIONS)
PASS   Sec. G1              0.334         1
10.23 C          0.00         505.66       60.00
|-----------------------------------------------------------------------|
| SLENDERNESS                                                           |
| Actual Slenderness Ratio    :     17.839  L/C  :     1                |
| Allowable Slenderness Ratio :    200.000  LOC  :    60.00             |
|-----------------------------------------------------------------------|
| STRENGTH CHECKS                                                       |
| Critical L/C  :      1    Ratio     :     0.334(PASS)                 |
|          Loc  :   60.00   Condition :   Sec. G1                       |
|-----------------------------------------------------------------------|
| DESIGN FORCES                                                         |
| Fx:   1.023E+01(C ) Fy:  -6.719E+01     Fz:   0.000E+00               |
| Mx:   0.000E+00     My:   0.000E+00     Mz:   5.057E+02               |
|-----------------------------------------------------------------------|
| SECTION PROPERTIES  (UNIT: INCH)                                      |
| Azz:   7.909E+00     Ayy:   7.909E+00     Cw:  0.000E+00              |
| Szz:   3.376E+01     Syy:   3.376E+01                                 |
| Izz:   1.688E+02     Iyy:   1.688E+02     Ix:  3.376E+02              |
|-----------------------------------------------------------------------|
| MATERIAL PROPERTIES                                                   |
| Fyld:          50.000   Fu:          60.000                           |
|-----------------------------------------------------------------------|
| Actual Member Length:        60.000                                   |
| Design Parameters                                                     |
| Kz:    1.00 Ky:    1.00 NSF:    1.00 SLF:    0.80 CSP:   12.00        |
|-----------------------------------------------------------------------|
| SECTION CLASS  UNSTIFFENED /     λ       λp      λr        CASE       |
|                STIFFENED                                              |
| Compression :  Non-Slender    20.00     N/A     63.80    T.B4.1(a)-9  |
|                Non-Slender    20.00     N/A     63.80    T.B4.1(a)-9  |
| Flexure     :  Compact        20.00    40.60   179.80    T.B4.1(b)-20 |
|                Compact        20.00    40.60   179.80    T.B4.1(b)-20 |
STAAD SPACE                                              -- PAGE NO.    7
STAAD.PRO CODE CHECKING - (AISC-360-10-LRFD)   v1.4a
********************************************
ALL UNITS ARE - KIP  INCH (UNLESS OTHERWISE Noted)
|-----------------------------------------------------------------------|
| CHECK FOR AXIAL TENSION                                               |
|                                                                       |
|              FORCE     CAPACITY   RATIO      CRITERIA     L/C    LOC  |
| Yield       0.00E+00   8.13E+02   0.000      Eq. D2-1      1     0.00 |
| Rupture     0.00E+00   6.50E+02   0.000      Eq. D2-2      1     0.00 |
|-----------------------------------------------------------------------|
| CHECK FOR AXIAL COMPRESSION                                           |
|                                                                       |
|              FORCE     CAPACITY   RATIO      CRITERIA     L/C    LOC  |
| Maj Buck    2.39E+01   6.56E+02   0.036      Eq. E3-1      2    60.00 |
| Min Buck    2.39E+01   6.56E+02   0.036      Eq. E3-1      2    60.00 |
| Intermediate                                                          |
| Results     Eff Area     KL/r      Fcr        Fe         Pn           |
| Maj Buck    1.49E+01    17.84   4.89E+01   8.99E+02   7.29E+02        |
| Min Buck    1.49E+01    17.84   4.89E+01   8.99E+02   7.29E+02        |
|-----------------------------------------------------------------------|
| CHECK FOR SHEAR                                                       |
|                                                                       |
|              FORCE     CAPACITY   RATIO      CRITERIA     L/C    LOC  |
| Local-Z    -5.39E-02   2.01E+02   0.000      Eq. G6-1      2    60.00 |
| Local-Y    -6.72E+01   2.01E+02   0.334      Eq. G6-1      1    60.00 |
| Intermediate                                                          |
| Results        Aw        Cv       Kv      h/tw      Vn                |
| Local-Z     1.49E+01     0.00     0.00     0.00   2.24E+02            |
| Local-Y     1.49E+01     0.00     0.00     0.00   2.24E+02            |
|-----------------------------------------------------------------------|
| CHECK FOR TORSION                                                     |
|                                                                       |
|              FORCE     CAPACITY   RATIO      CRITERIA     L/C    LOC  |
|             2.38E+02   1.91E+03   0.125      Eq. H3-1      2    60.00 |
| Intermediate Fcr        Tn                                            |
|             3.00E+01   2.13E+03                                       |
|-----------------------------------------------------------------------|
| CHECK FOR BENDING-YIELDING                                            |
|                                                                       |
|              FORCE     CAPACITY   RATIO      CRITERIA     L/C    LOC  |
| Major      -5.06E+02   2.03E+03   0.249      Eq. F8-1      1    60.00 |
| Minor       1.62E+00   2.03E+03   0.001      Eq. F8-1      2    60.00 |
| Intermediate   Mn        My                                           |
| Major       2.26E+03   0.00E+00                                       |
| Minor       2.26E+03   0.00E+00                                       |
STAAD SPACE                                              -- PAGE NO.    8
STAAD.PRO CODE CHECKING - (AISC-360-10-LRFD)   v1.4a
********************************************
ALL UNITS ARE - KIP  INCH (UNLESS OTHERWISE Noted)
|-----------------------------------------------------------------------|
| CHECK FOR FLEXURE TENS/COMP INTERACTION                               |
|                       RATIO      CRITERIA    L/C     LOC              |
| Flexure Comp          0.257      Eq. H1-1b     1    60.00             |
| Flexure Tens          0.249      Eq. H1-1b     1    60.00             |
| Intermediate         Mcx /      Mrx /      Pc /                       |
|                      Mcy        Mry        Pr                         |
| Flexure Comp         2.03E+03  -5.06E+02   6.56E+02                   |
|                      2.03E+03   0.00E+00   1.02E+01                   |
| Flexure Tens         2.03E+03  -5.06E+02   0.00E+00                   |
|                      2.03E+03   0.00E+00   0.00E+00                   |
|-----------------------------------------------------------------------|
52. PARAMETER 2
53. CODE AISC UNIFIED 2010
54. SLF 0.8 MEMB 2
55. FYLD 50 ALL
56. FU 60 ALL
57. METHOD ASD
58. STP 2 MEMB 2
59. TRACK 2 MEMB 2
60. CHECK CODE MEMB 2
STEEL DESIGN
WARNING: For member#      2 the profile has been selected from HSS Rect/Round (non A1085)/Pipe
tables of AISC database. Weld type is considered to be Elect-resist-weld.
Thickness is already reduced from the table. Further reductions will not be done.
STAAD SPACE                                              -- PAGE NO.    9
STAAD.PRO CODE CHECKING - ( AISC-360-10-ASD)   v1.4a
********************************************
ALL UNITS ARE - KIP  INCH (UNLESS OTHERWISE Noted)
FX            MY             MZ       LOCATION
=======================================================================
2      PRI SMAT                 (AISC SECTIONS)
PASS   Sec. G1              0.501         1
10.23 C          0.00         505.66       60.00
|-----------------------------------------------------------------------|
| SLENDERNESS                                                           |
| Actual Slenderness Ratio    :     17.839  L/C  :     1                |
| Allowable Slenderness Ratio :    200.000  LOC  :    60.00             |
|-----------------------------------------------------------------------|
| STRENGTH CHECKS                                                       |
| Critical L/C  :      1    Ratio     :     0.501(PASS)                 |
|          Loc  :   60.00   Condition :   Sec. G1                       |
|-----------------------------------------------------------------------|
| DESIGN FORCES                                                         |
| Fx:   1.023E+01(C ) Fy:  -6.719E+01     Fz:   0.000E+00               |
| Mx:   0.000E+00     My:   0.000E+00     Mz:   5.057E+02               |
|-----------------------------------------------------------------------|
| SECTION PROPERTIES  (UNIT: INCH)                                      |
| Azz:   7.909E+00     Ayy:   7.909E+00     Cw:  0.000E+00              |
| Szz:   3.376E+01     Syy:   3.376E+01                                 |
| Izz:   1.688E+02     Iyy:   1.688E+02     Ix:  3.376E+02              |
|-----------------------------------------------------------------------|
| MATERIAL PROPERTIES                                                   |
| Fyld:          50.000   Fu:          60.000                           |
|-----------------------------------------------------------------------|
| Actual Member Length:        60.000                                   |
| Design Parameters                                                     |
| Kz:    1.00 Ky:    1.00 NSF:    1.00 SLF:    0.80 CSP:   12.00        |
|-----------------------------------------------------------------------|
| SECTION CLASS  UNSTIFFENED /     λ       λp      λr        CASE       |
|                STIFFENED                                              |
| Compression :  Non-Slender    20.00     N/A     63.80    T.B4.1(a)-9  |
|                Non-Slender    20.00     N/A     63.80    T.B4.1(a)-9  |
| Flexure     :  Compact        20.00    40.60   179.80    T.B4.1(b)-20 |
|                Compact        20.00    40.60   179.80    T.B4.1(b)-20 |
STAAD SPACE                                              -- PAGE NO.   10
STAAD.PRO CODE CHECKING - ( AISC-360-10-ASD)   v1.4a
********************************************
ALL UNITS ARE - KIP  INCH (UNLESS OTHERWISE Noted)
|-----------------------------------------------------------------------|
| CHECK FOR AXIAL TENSION                                               |
|                                                                       |
|              FORCE     CAPACITY   RATIO      CRITERIA     L/C    LOC  |
| Yield       0.00E+00   5.41E+02   0.000      Eq. D2-1      1     0.00 |
| Rupture     0.00E+00   4.34E+02   0.000      Eq. D2-2      1     0.00 |
|-----------------------------------------------------------------------|
| CHECK FOR AXIAL COMPRESSION                                           |
|                                                                       |
|              FORCE     CAPACITY   RATIO      CRITERIA     L/C    LOC  |
| Maj Buck    2.39E+01   4.37E+02   0.055      Eq. E3-1      2    60.00 |
| Min Buck    2.39E+01   4.37E+02   0.055      Eq. E3-1      2    60.00 |
| Intermediate                                                          |
| Results     Eff Area     KL/r      Fcr        Fe         Pn           |
| Maj Buck    1.49E+01    17.84   4.89E+01   8.99E+02   7.29E+02        |
| Min Buck    1.49E+01    17.84   4.89E+01   8.99E+02   7.29E+02        |
|-----------------------------------------------------------------------|
| CHECK FOR SHEAR                                                       |
|                                                                       |
|              FORCE     CAPACITY   RATIO      CRITERIA     L/C    LOC  |
| Local-Z    -5.39E-02   1.34E+02   0.000      Eq. G6-1      2    60.00 |
| Local-Y    -6.72E+01   1.34E+02   0.501      Eq. G6-1      1    60.00 |
| Intermediate                                                          |
| Results        Aw        Cv       Kv      h/tw      Vn                |
| Local-Z     1.49E+01     0.00     0.00     0.00   2.24E+02            |
| Local-Y     1.49E+01     0.00     0.00     0.00   2.24E+02            |
|-----------------------------------------------------------------------|
| CHECK FOR TORSION                                                     |
|                                                                       |
|              FORCE     CAPACITY   RATIO      CRITERIA     L/C    LOC  |
|             2.38E+02   1.27E+03   0.187      Eq. H3-1      2    60.00 |
| Intermediate Fcr        Tn                                            |
|             3.00E+01   2.13E+03                                       |
|-----------------------------------------------------------------------|
| CHECK FOR BENDING-YIELDING                                            |
|                                                                       |
|              FORCE     CAPACITY   RATIO      CRITERIA     L/C    LOC  |
| Major      -5.06E+02   1.35E+03   0.374      Eq. F8-1      1    60.00 |
| Minor       1.62E+00   1.35E+03   0.001      Eq. F8-1      2    60.00 |
| Intermediate   Mn        My                                           |
| Major       2.26E+03   0.00E+00                                       |
| Minor       2.26E+03   0.00E+00                                       |
STAAD SPACE                                              -- PAGE NO.   11
STAAD.PRO CODE CHECKING - ( AISC-360-10-ASD)   v1.4a
********************************************
ALL UNITS ARE - KIP  INCH (UNLESS OTHERWISE Noted)
|-----------------------------------------------------------------------|
| CHECK FOR FLEXURE TENS/COMP INTERACTION                               |
|                       RATIO      CRITERIA    L/C     LOC              |
| Flexure Comp          0.386      Eq. H1-1b     1    60.00             |
| Flexure Tens          0.374      Eq. H1-1b     1    60.00             |
| Intermediate         Mcx /      Mrx /      Pc /                       |
|                      Mcy        Mry        Pr                         |
| Flexure Comp         1.35E+03  -5.06E+02   4.37E+02                   |
|                      1.35E+03   0.00E+00   1.02E+01                   |
| Flexure Tens         1.35E+03  -5.06E+02   0.00E+00                   |
|                      1.35E+03   0.00E+00   0.00E+00                   |
|-----------------------------------------------------------------------|
61. FINISH
*********** END OF THE STAAD.Pro RUN ***********
**** DATE= OCT 19,2021   TIME= 18:10:58 ****
STAAD SPACE                                              -- PAGE NO.   12
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