Per the federal regulations contained in 49 CFR Part 26, Electronic Code of Federal regulations, a DBE is a for-profit small business concern that is: 1  At least 51 percent owned by one or more individuals who are both socially and economically disadvantaged.
Use a piece of lumber as a smash block to protect the plywood tongue. Smash the additional pieces of plywood in place. Installing Plywood Subfloor: Leveling and Finishing
While hot-water and air-based radiant heat systems require pipes being laid beneath the subfloor, electric-based systems can be laid right on top of the existing subfloor -- including concrete slabs -- and then covered with your finished flooring.