Minimum size access opening for equipment installed in an underfloor area is ________?

Minimum size access opening for equipment installed in an underfloor area is ________?

• A. 18 x 24
• B. 22 x 30
• C. 24 x 28
• D. 20 x 28

Answer: (B)

Access to equipment in an underfloor area must be large enough for a technician to reach in, maneuver components, and bring tools through for installation, maintenance, or removal. The minimum size that codes commonly require for this type of access is 22 inches by 30 inches. This dimension provides enough clearance for an adult to fit through and work around ducts or a unit without squeezing or disassembling surrounding structure. Smaller openings can impede serviceability and safety, while this 22 × 30 size meets the standard practical requirement.

Access to equipment in an underfloor area must be large enough for a technician to reach in, maneuver components, and bring tools through for installation, maintenance, or removal. The minimum size that codes commonly require for this type of access is 22 inches by 30 inches. This dimension provides enough clearance for an adult to fit through and work around ducts or a unit without squeezing or disassembling surrounding structure. Smaller openings can impede serviceability and safety, while this 22 × 30 size meets the standard practical requirement.