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OCM

Adjustable Plastic Unichair

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The OCM Adjustable Uni-chair is a versatile and very strong polymer composite support that uses three individual chair/Holder Assemblies to accommodate 3" to 18-1/2" heights.

Features

  • Base is internally threaded to accommodate a coil threaded cradle.
  • Polymer Composite Threaded Cradle has the exact height molded into the threaded rod to ensure the proper height is achieved.
  • Dual cradle head allows for 2 different heights 1/2" apart.
  • Tapered footprint for minimal surface contact on wood decks.
  • Chair can be used for many applications for rebar/mesh, post tension strand, and ledger supports in tilt walls and precast panels.
  • Ideal solution for sloping slabs/roofs or curved panels.
  • Direct replacement for Metal Screed Chair in Bridge Deck applications.
  • Removable Cradle can be replaced with steel Pipe Holder.
OCM Part No. Thread
Diameter
(H) Base
Height
(L) Cradle
Length
Cradle
Opening
Height Range Load Test (lbs.)
Min Max Min Height Max Height
PHCA3-5.5 1/2"  2.56" 4.33" 1.19" 3" 5-3/4" 2,088 535
PHCA6-10.5 3/4" 5.17" 6" 1.26" 6" 10-1/2" 1,565 472
PHCA10-18.5 3/4" 9.17" 9" 1.26" 10" 18" 1,584 300