FOUNDATION DESIGN THINGS TO KNOW BEFORE YOU BUY

As the title implies, a slab is only one layer of concrete, a number of inches thick. The slab is poured thicker at the perimeters, to form an integral footing; reinforcing rods bolster the thickened edge. The slab normally rests on the mattress of crushed gravel to improve drainage.Pile Foundations: Piles are driven deep into the bottom to achieve