Question

Axial forces in a column due to service loads are as follows (assume the live load used in these calculationsis less than 100 psf):Dead:150 kcompressionLive:280 kcompressionRoof Live:40 kcompressionSnow:50 kcompressionWind:120 kcompression or tensionEarthquake:200 kcompression or tension1. Compute the required axial strength,TuandPu, for this column in tension and compression usingLRFD load combinations. (Neglect self-weight.)2. Describe the loading scenario that represents the worst case tension and compression loading for thecolumn (remember, wind and earthquake loading can act in either direction).

Answer 1

a) attached below

b) The worst case in tension is case ( 9-7 ) b which is

= -65k

The worst case in compression is case ( 9-5 ) a which is

= 670 k

Step-by-step explanation:

Given data :

D = 150k , L = 280k , Lr = 40k , s = 50k , w = ± 120k

E = ± 200k

attached below is a detailed solution to the given problem ( problem 1 )

A) attached below

b) The worst case in tension is case ( 9-7 ) b which is

= -65k

The worst case in compression is case ( 9-5 ) a which is

= 670 k