Rain or shine, today marks a milestone in the Island's construction history: the single biggest one-day pour of concrete, at King Edward VII Memorial Hospital.It will take 14 hours, and 110 loads from SAL's concrete batching plants, to pour the 14,850 cubic feet of concrete.Paget Health Services, the company building the new hospital facility, said the concrete will form a base capable of standing up to an earthquake, as well as hurricane-strength winds.Prior to this, the largest previous pour took place at Belco, and used 12,150 cubic feet of concrete.