A fully braced structural member in a building is subjected to several different loads, including roof loads of D = 5 k and L_r
= 7 k; floor loads of D = 6 k and occupancy L = 15 k; S = 18 k; and W = 17 k and E = 12 k (resulting from overturning forces on the lateral-force-resisting system). Consider the ASD load combinations described in Sec. 2.17 and assume the wind and seismic loads act in the same direction as the gravity toads. Find: The critical ASD combination of loads.
1 answer:
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Answer:
Explanation:
From the information given:
The total load is distributed across both the rod and tube:
Since this is a composite column; the elongation of both aluminum rod & steel tube is equal.
Replace into equation (1)
Finally, to determine the normal stress in aluminum rod:
Thus, the normal stress = 23.523 MPa in compression.