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
The preference is using a 3/8 plywood underlayment nailed or screwed over a plywood sub floor when gluing down a wood floor. Should the floor need to be repaired or replaced, it is easier/better with underlayment than with the subfloor. Subfloors For 3/4 Hardwood Installations.