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RG TAYLOR wrote:
> We are reviewing a proposal to Design and Build a 28m (92 ft) diameter
> 7.5m (24.6 Ft) deep precast post-tensioned concrete reservoir.
> The proposal is to reduce the floor slab thickness, which is to be
> placed on 50mm (2 inches) of site concrete, from 150mm (6 inches) to
> 125mm (5 inches).
> The floor slab is being poured in 4 metre by 4 metre (13
> Ft by 13Ft) sections with centrally placed mesh reinforcing.
> Our thought is that while the 5 inch slab can be done the 6 inch slab is
> better.
> Any comments would be appreciated.
> Roy G Taylor PEng
> Concrete Tank Consultants
> New Zealand