V. AISC LRFD - Tee Section Compression Capacity
To find a suitable American T-section with an axial compressive strength of 100 Kips.
Reference
Hand calculation using the following reference:
AISC Load Factor Resistance Design, 3rd Edition, Example 4.4, page 4-13.
Problem
The member ends are pinned, and the member is braced at the ends only for both axes.
Comparison
The reported STAAD.Pro value is based on the term PNC
in the STAAD.Pro output.
Result Type | Theory | STAAD.Pro | Difference | |
---|---|---|---|---|
Design strength (kips) | 102 | 101.56 | none |
STAAD Input
The file C:\Users\Public\Public Documents\STAAD.Pro 2024\Samples \Verification Models\09 Steel Design\US\AISC\AISC LRFD - Tee Section Compression Capacity.STD is typically installed with the program.
STAAD SPACE AXIAL COMPRESSION CAPACITY PER AISC LRFD 3RD ED
START JOB INFORMATION
ENGINEER DATE 23-Sep-18
END JOB INFORMATION
*
* EXAMPLE PROBLEM 4.4, PAGE 4-13, AISC LRFD 3RD ED.
* CAPACITY (PNC) SHOULD BE ABOUT 102 KIPS
*
UNIT FEET KIP
JOINT COORDINATES
1 0 0 0; 2 0 20 0;
MEMBER INCIDENCES
1 1 2;
MEMBER PROPERTY AMERICAN
1 TABLE T W12X26
UNIT INCHES KIP
DEFINE MATERIAL START
ISOTROPIC MATERIAL1
E 29000
POISSON 0.3
END DEFINE MATERIAL
UNIT FEET KIP
CONSTANTS
MATERIAL MATERIAL1 ALL
SUPPORTS
1 PINNED
2 FIXED BUT FY MX MZ
LOAD 1
JOINT LOAD
2 FY -100
PERFORM ANALYSIS
UNIT INCHES KIP
PARAMETER 1
CODE LRFD
FYLD 50 ALL
TRACK 1 ALL
SELECT ALL
FINISH
STAAD Output
STAAD.Pro MEMBER SELECTION - (LRFD 3RD EDITION) v1.0
**************************
ALL UNITS ARE - KIP INCH (UNLESS OTHERWISE Noted)
MEMBER TABLE RESULT/ CRITICAL COND/ RATIO/ LOADING/
FX MY MZ LOCATION
=======================================================================
1 T W14X53 (AISC SECTIONS)
PASS LRFD-H1-1A-C 0.985 1
100.00 C 0.00 0.00 0.00
+---------------------------------------------------------------------+
| DESIGN STRENGTHS FOR MEMBER 1 UNITS - KIP IN |
| PNC= 101.56 PNT= 351.00 MNZ= 209.89 MNY= 322.15 VN= 69.43 |
+---------------------------------------------------------------------+