cost of formwork for concrete
Concrete construction unit cost for erection of site-built concrete formwork built from lumber and plywood. This is a general unit cost that covers a variety of typical projects. One square foot. We figure 55 square feet of formwork per carpenter hour, plus some laborer time (one hour per 125 square feet of formwork). For every 100 square feet of formwork we figure 66 feet of 2x4, 33 feet of 2x6, and 3 sheets of form plywood. All the materials use a negative waste factor to account for later reuse. $1.41 per square foot of formwork for concrete placement. We suggest the foundation wall area.