Which statement about raised floor securing is correct?

• A. Pedestal: at least every 3 ft; Sub floor: no more than 12 ft.
• B. Pedestal: at least every 12 ft; Sub floor: no more than 3 ft.
• C. Pedestal: at least every 6 ft; Sub floor: no more than 9 ft.
• D. Pedestal: at least every 4 ft; Sub floor: no more than 8 ft.

Answer: (A)

Securing a raised floor properly is about keeping the entire panel grid rigid and level so loads, vibrations, and foot traffic don’t cause movement or uneven surfaces. Pedestals must be close enough to reliably support each panel; placing them at least every 3 ft ensures no portion of the floor is overly spans between supports, which helps prevent sagging or flexing of the raised floor tiles. The subfloor beneath the raised system also needs regular securing so the underlying layer doesn’t shift or bow between supports; limiting securing points to no more than 12 ft apart keeps the entire floor plane stable and level. If pedestals were spaced farther apart, or the subfloor secured too infrequently, you’d risk misalignment, tile damage, or wobble under load. The combination described—pedestals every 3 ft or closer and subfloor securing within 12 ft—provides the appropriate rigidity and safety for the raised-floor system.