On May 2 another milestone in the Conservation Resource Center was achieved with the pouring of the building slab. The slab was poured as a monolithic slab-on-grade with thickened edges. From ConcreteNetwork.com:
As the name suggests, a slab is a single layer of concrete, several inches thick. The slab is poured thicker at the edges, to form an integral footing; reinforcing rods strengthen the thickened edge. The slab normally rests on a bed of crushed gravel to improve drainage. Casting a wire mesh in the concrete reduces the chance of cracking.
Workers cut off excess wet concrete to bring the top surface of the slab to the proper grade and smoothness. Then power trowels (nicknamed “whirlybirds”) worked concrete to create a smooth, level surface. Late in the day, control joints were cut to help guide cracking as the slab cures.
Find more project photos here: https://farm.conservationdistrict.org/crc#photos
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