1. A recent project included 20,000 square feet of 8-inch-thick concrete slab. The cost of the concrete material for the sidewalk was $16,350. Determine the material cost for 1 square foot of sidewalk. 2. You have been quoted $20,560 for an order of lumber, all of which is subject to sales tax. The price does not include sales tax. The local sales tax rate is 4 %. How much sales tax must be paid on the lumber? 3. You have been quoted $188,000 for an order of lumber. You expect lumber prices to increase by 5.0% between now and the time you place the order. How much should you include in your bid to cover the cost of the lumber? 4. Convert the output of 5,100 square feet of 10-inch-thick blown fiberglass insulation per 8-hour day for a three-person crew to labor hours per square foot. . Determine the square footage of storefront needed to construct the storefront in Figure CHAPTER TEN Wind S . .