Under Oregon building codes, what is the minimum width required for emergency egress windows in basement bedrooms?
Correct Answer
D) 20 inches
Oregon building code requires emergency egress windows to have a minimum clear width of 20 inches for basement bedrooms.
Why This Is the Correct Answer
The correct answer is D (20 inches). Oregon building code, consistent with the IRC, requires emergency escape and rescue openings (egress windows) to have a minimum clear width of 20 inches. This allows a person to escape or a rescuer to enter in an emergency.
Why the Other Options Are Wrong
Option A: 30 inches
30 inches is incorrect. While 30 inches of clear width would certainly allow egress, it exceeds the minimum requirement. The code sets 20 inches as the minimum clear width.
Option B: 24 inches
24 inches is incorrect. This is a common distractor — 24 inches appears in various building code contexts (e.g., crawl space access dimensions) but is not the minimum egress window width.
Option C: 36 inches
36 inches is incorrect. This width relates to door minimum widths for accessibility, not egress window minimum clear widths. Confusing window and door minimums is a common error.
Memory Technique
Think '20-24-5.7': 20 inches wide, 24 inches tall, 5.7 sq ft net clear area. For the width alone: '20 inches — barely wide enough for shoulders.' Associate 20 with the minimum because it is the narrowest of the three dimensions.
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A contractor is renovating a home built in 1965 and will disturb painted surfaces totaling 8 square feet. What lead-based paint requirement applies under Oregon regulations?
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