What can deviations from project drawings cause in ductwork?

What can deviations from project drawings cause in ductwork?

• A. Improved pattern consistency.
• B. Misfits and leaks.
• C. Faster assembly.
• D. Stronger joints.

Answer: (B)

Deviations from project drawings disrupt the precise fit that ductwork relies on. Duct pieces are designed to join at specific dimensions, hole locations, and seam types; when those measurements drift, flanges don’t line up, holes misalign, and patterns no longer match. That creates gaps at seams and joints, providing leakage paths for conditioned air. The result is reduced airflow efficiency, higher pressure losses, potential whistling or noise, and the need for rework or extra sealing. So, the effect is misfits and leaks. Deviations wouldn’t improve pattern consistency, speed assembly, or strengthen joints; they typically cause misalignment and leakage, not better performance.

Deviations from project drawings disrupt the precise fit that ductwork relies on. Duct pieces are designed to join at specific dimensions, hole locations, and seam types; when those measurements drift, flanges don’t line up, holes misalign, and patterns no longer match. That creates gaps at seams and joints, providing leakage paths for conditioned air. The result is reduced airflow efficiency, higher pressure losses, potential whistling or noise, and the need for rework or extra sealing. So, the effect is misfits and leaks. Deviations wouldn’t improve pattern consistency, speed assembly, or strengthen joints; they typically cause misalignment and leakage, not better performance.