Openings shall be provided at the sides or at the top of the duct, whichever is more accessible, and at _______.

Openings shall be provided at the sides or at the top of the duct, whichever is more accessible, and at _______.

• A. Intersections
• B. Changes of Direction
• C. Seams
• D. Low Points

Answer: (B)

Access openings in ductwork are provided where they give the easiest access for inspection, cleaning, and servicing. Placing an opening on the sides or top where it’s most accessible helps reach the interior of the duct. Bringing in an opening at a change of direction is essential because bends are where access becomes most difficult from a single straight opening. An opening at the turn allows you to reach and service the interior around that bend, ensuring you can inspect and clean the entire run rather than only straight sections. Openings at intersections, seams, or low points don’t inherently guarantee access around turns, so the change of direction location best fulfills the need for comprehensive accessibility.

Access openings in ductwork are provided where they give the easiest access for inspection, cleaning, and servicing. Placing an opening on the sides or top where it’s most accessible helps reach the interior of the duct. Bringing in an opening at a change of direction is essential because bends are where access becomes most difficult from a single straight opening. An opening at the turn allows you to reach and service the interior around that bend, ensuring you can inspect and clean the entire run rather than only straight sections. Openings at intersections, seams, or low points don’t inherently guarantee access around turns, so the change of direction location best fulfills the need for comprehensive accessibility.