When calculating the number of sheets needed for a square subfloor that is 36' x 36', how many 4 x 12 x 2 plywood sheets are required including a 10% waste factor?

To determine the number of 4' x 12' sheets of plywood needed for a subfloor that measures 36' x 36', you first need to calculate the total area of the subfloor and then the area that one plywood sheet covers.

1. Calculate the area of the subfloor:

• The area of the square subfloor is calculated as follows:

• Area = Length x Width = 36' x 36' = 1296 square feet.

2. Calculate the area of one plywood sheet:

• The area of one 4' x 12' plywood sheet is:

• Area = Length x Width = 4' x 12' = 48 square feet.

3. Determine the number of sheets needed without waste:

• To find the number of sheets required without considering waste, divide the total area of the subfloor by the area of one sheet:

• Number of sheets = Total area / Area of one sheet = 1296 sq. ft. / 48 sq. ft. = 27 sheets.

4. Include the waste factor:

• To account for a 10% waste factor, calculate 10% of