How many rolls of R-13 insulation are required to insulate the exterior walls of the residence shown in Figure 15.18? The wall height is 8 feet 1 inch high. The insulation comes in rolls 15 inches wide by 56 feet long. Do not deduct for the doors or windows.
What will be an ideal response?
Find the length of the wall as follows:
Exterior wall length = 32? + 26? + 36? + 13?6? + 4? + 12?6? = 124?
Area of exterior walls = 124? × 8?1? = 1,002 sf
Effective coverage per roll = 16? × 56? / 12 in per ft = 75 sf
Rolls of insulation = 1,002 sf of walls / 75 sf of coverage per roll = 13.36 rolls – Use 12 rolls
You might also like to view...
A drafter needs to understand the engineering formulas that are used in a basement seismic design.
Answer the following statement true (T) or false (F)
How do the Knickerbocker group, Hudson River school, and transcendentalists all reflect the nationalism of early 19th-century America? What particularly American values did each reflect?
What will be an ideal response?
A triac can be described as:
A) Two silicon rectifiers (SCR) in series. B) Three silicon controlled rectifiers (SCR) in series. C) Two silicon controlled rectifiers (SCR) in parallel. D) Three silicon controlled rectifiers (SCR) in parallel.
Who is legally responsible for the actions of the technicians and employees?
A. The technicians. B. The lawyers. C. The business owner D. The customer.