a.You have a rectangular basement wall that is 24 x 48 feet on the exterior of the wall. It is 8-feet high. You will be damp proofing the wall with a bituminous material. Assume this material is on the exterior of the wall and is applied starting 2-feet down from the top. One gallon of the material covers 110 square feet. Assume 3% waste.

b. You will be insulating the exterior of the basement that is below grade with 1/2-inch rigid foam insulation. It will start at the same level as the damp proofing. How many 4 x 8 foot sheets of insulation will you need to unsalted this entire basement. Assume 2% waste.