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

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

...........