Joints

PRO-KEY™

PRO-KEY™

Cat # Slab A B C Knockout
3500 4″ 3 1/8″ 2″ 3/4″ 7/8″
4500 5″ 4 1/8″ 2 1/2″ 3/4″ 7/8″
5500 6″ 5 1/8″ 3″ 3/4″ 7/8″
7500 8″ 7 1/8″ 4″ 3/4″ 1 1/4″
9500 10″-12″ 9 1/8″ 5″ 3/4″ 1 1/4″

PRO-KEY™ Specs

Advantages of PRO-KEY™

  • Positive stake-to-key lock of PRO-KEY™ [Patent No. 5380122] prevents costly delays associated with resetting key joint when floating concrete. Stakes interlock with slots to prevent the key from rising off the stakes.
  • Location of the key is 1/2 depth of slab as specified by ACI & PCA.
  • LOCK SLOT™ stakes double as a butt splice.
  • Radius formed key eliminates the sharp angles that produce a spalling tendency.
  • ULTRA FINE profile at top edge eliminates surface voids, reduces spalling and produces architecturally pleasing joint lines in the finished slab.
  • Tongue and groove design provide excellent load transfer characteristics for heavy wheeled traffic and prevents uneven settling associated with aggregate interlock.
  • Eliminates costly form stripping and saw cutting. Replaces the slow and costly method of checker-board placement of concrete.

 PRO-KEY™ Data Sheets

PRO-KEY™ Accessories

PRO-KEY™ removable cap yields straight void ready for sealing


BoMetals PRO-KEY Installation Guide Video