Bishop Bolt

Bishop Bolt

Description

The Bishop Bolt system is a yielding passive support system that is grouted prior to installation. The two pairs of double paddles act as anchors once the unit is grouted. The unit de-bonds during loading and elongation of the steel occurs between the two sets of paddles resulting in engineered yieldability.

The Bishop Bolt can be supplied with 16mm, 18mm or 20mm bar depending on requirements. The unit has an elongation of 23% in static conditions and 15% under dynamic loading.

Benefits of the bolt

  • High yieldability
  • High load generation
  • High energy absorption
  • Easy grouting

 

Dimensional Specifications Ø16 Ø18 Ø20
Bar diameter Ø16.3mm Ø18.3mm Ø20.3mm
Length of bolt 1.0m to 3.0m 1.0m to 3.0m 1.0m to 3.0m
Steel Specifications Ø16 Ø18 Ø20
Yield strength typical 500MPa 500MPa 500MPa
Yield load typical 100.5kN 127kN 157kN
Ultimate tensile load typical 128kN 162kN 229kN
Elongation* Ø16 Ø18 Ø20
Average 26.13% 26.13% 26.13%
Standard deviation 2.17% 2.17% 2.17%
Guaranteed static 15% to 30% 15% to 30% 15% to 30%
*Tested as per SANS 6892-1:2010 (Ed. 1.00)

 

Bishop Bolt