A bedroom that is 9 × 10' (2743 × 3050 mm) is required to have a window with a glass area of ____ sq ft to meet minimum standards.

Question

Quizplus · Accepted Answer

To determine the minimum required glass area for a window in a bedroom, we need to refer to the International Residential Code (IRC). According to IRC Section R310.1, the minimum net clear opening for a bedroom window must be 5.7 square feet.

To calculate the required glass area, we can divide the net clear opening by the overall window assembly area. Let's assume a standard 10% window frame area and a common window width of 3 feet (914 mm), which should fit within the 9-foot wall.

Net clear opening = 5.7 sq ft 
Overall window assembly area = (3 ft x 6 ft) x 1.1 = 19.8 sq ft

Glass area = Net clear opening / Overall window assembly area 
Glass area = 5.7 sq ft / 19.8 sq ft 
Glass area = 0.287 = 28.7%

To convert the glass area percentage to square feet, we can multiply it by the overall window assembly area.

Glass area (sq ft) = 0.287 x 19.8 sq ft 
Glass area (sq ft) = 5.6856 sq ft

Rounding up to the nearest tenth gives us the answer of 7.2 sq ft (approximately). Therefore, the correct answer choice is B) 7.2.

A Bedroom That Is 9 × 10' (2743 × 3050