Design and construction of pilesupported concrete industrial floors

摘要

Pile-supported slabs are designed on the assumption that at working loads they are in a cracked state, ie, the load-induced stresses are being resisted by reinforcement. It follows that cracking of the upper surface can be anticipated when loaded, although applied safety factors mean that this may not necessarily be the case. This tends to surprise owners and tenants who do not expect to see cracks in floors. Pile-supported ground floors are similar to suspended floors in, say, office developments. The difference is in use. Office floors are covered on top by raised computer floors and by ceilings below. Cracking is therefore rarely observed. Floors in distribution centres are quite different, where cracks are highly visible.