Access Floors

Larger imageShort Pedestal System

Source: Noson, Perbix, SSD


To secure access floors.


Install braces and anchor the existing pedestals. When floor height exceeds 12", install a steel brace to every third pedestal 8' on center.

Supplies Required

  • Expansion bolts—3/8" diameter
  • Machine bolt—3/8" diameter
  • Angle—1-1/2" x 1-1/2" x 1/4"

Larger imageBraced Pedestal System

Source: Noson, Perbix, SSD


  1. Install four expansion bolts through each pedestal base to the floor below (concrete floors).
  2. Install a steel brace with a machine bolt or weld between the diagonal steel brace and the pedestal head with expansion bolts to the floor below.
  3. Locate braces at 8' on center. At each location, install two braces in perpendicular directions.
  4. Secure pedestal head to the stringer or to each floor panel corner with one machine bolt.


When anchoring to post-tensioned slab, locate and avoid penetrating reinforcing.

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