Determine the square feet of waterproofing needed for a rectangular basement 26 feet by 40 feet. The waterproofing is 8 feet high. How many gallons of waterproofing are needed if one gallon of waterproofing will cover 60 square feet?

What will be an ideal response?


Find the amount of waterproofing as follows:

Length of wall = 26? + 40? + 26? + 40? = 132?

Area to be waterproofed = 132? × 8? = 1,056 sf

Gallons of waterproofing = 1,056 sf / 60 sf per gallon = 17.6 gallons

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