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Re: Deep Slab

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> 
> 
> In design of a box culvert with following dimensions:
> -Length: 300 m
> -Width:  30 m
> -Height: 30 m
> -Number of conduits: 2
> -Thickness of bottom slab: 5 m
> there is a problem in shear control of bottom slab.
> 
> According to ACI R11.8, bottom slab should be designed and reinforced as a
> deep beam but large dimensions and long length causes construction
> difficulties to provide required shear reinforcement.
> 
> Is it possible to use shear reinforcement provisions of usual beams,
> instead of deep beams, taking at a distance .15 span from face of support
> as critical section for shear control?
> 
> It should be noted the results of finite element analysis show that the
> maximum shear force is occured at 0.15 span.
> 
> Finally, is there anybody to know any references for design of deep slab?
> 
> I really appreciate the helps.
> 
> Best regards,
> 
> S. Komaie
> 
> 
> 
>