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Bow-Tie®
Bow-Tie
 
Bow-Tie

Bow-Tie®

Bow-Ties are especially valuable in two areas of construction:
1. To provide connections for concrete floor slabs, landings and stairs and other concrete elements
that are placed at a later time in high-rise buildings where the lift cores and stair cores are slip-formed or jumpformed;
2. Precast or tilt-up construction where connections of additional concrete elements are to be made to
the panels in a secondary pour.


Features & benefits

  • Develops full moment capacity at connections between two concrete pours
  • Allows for load reversals
  • Positive locking by effective wedge effect
  • Each connection replaces two threaded ferrules or two pull-out bars
  • Can connect directly to second pour reinforcing steel without the need to splice
  • Connection to second pour reinforcing steel only requires a standard 180 degree loop in reinforcing bar
  • Can accept loops in reinforcing bars bent around mandrels [pins] from 4 to 6 times bar diameter
  • Allows for connections of concrete elements at 90 degrees plus or minus 50 degrees to face of first pour [e.g. stairway stringers to landings]
  • Not sensitive to minor concrete slurry contamination
  • Eliminates exposure to repetitive stress injuries caused by bending out multiple bars or threading and tightening multiple bars
  • Reduces the time and effort expended by workers performing tasks in a crouched position, decreases exposure to back injuries
  • Reduces exposure to tripping hazards created by pull-out bars
  • Reduces exposure of workers to injury from starter bars
  • Minimises QC to walk-past visual inspection

bowtie

REUSABLE BOW-TIE® BOARDS

Reusable concrete rebate board to suit the Danley® Bow-Tie® system.

  • 35 mm thickness
  • Made from polyurethane
  • Dimpled finish
  • Jacking nut moulded into board to aid removal

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  Danley® Construction Products 2009