SF_century
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A concrete slab is continuous for six spans. The slab has a uniform thickness and is supported by 12-in-wide concrete beams at 10 ft o.c. The ratio of the suns of column stiffness to beam stiffness is less than eight to all spans. The slab experiences the following uniform loads (factored):
DL 100 Psf (includes slab weight)
LL 50 psf
Referring to aci 318-08 (excluding appendix c) and using the aci approximate method, the maximum negative moment (ft-kips) on the slab is most nearly ( a positive moment is tension on the bottom face):
A.) -0.81
B) -1.10
C) -1.35
D) -1.50
I understand what length to use but I don't understand the solution provided, because it does not include the DL or LL and just the concrete weight AND it doesn't factor the dead load. ??? Help.
DL 100 Psf (includes slab weight)
LL 50 psf
Referring to aci 318-08 (excluding appendix c) and using the aci approximate method, the maximum negative moment (ft-kips) on the slab is most nearly ( a positive moment is tension on the bottom face):
A.) -0.81
B) -1.10
C) -1.35
D) -1.50
I understand what length to use but I don't understand the solution provided, because it does not include the DL or LL and just the concrete weight AND it doesn't factor the dead load. ??? Help.
