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Ground Support Systems

Garford Dynamic Solid Bolt

Garford Dynamic Solid Bolt

Product Description

A solid bolt that has a mechanism that allows it to absorb seismic events and remain intact. The solid bolt can be installed in both resin and cement grouts.

Field of Application

The Dynamic Solid Bolt can be installed in areas where siesmic activity is expected.

Technical Specifications

Mechanical Properties Minimum Typical
Core Diameter - Bar (mm) 21.45 21.7
Cross Sectional Area - Bar (mm²) 361 370
Yield Strength (MPa) 550 580
Yield Force (kN) 199 215
Tensile Strength (MPa) 850 915
Tensile Force (kN) 307 339
Elongation (%) 12 16
Mass per metre - Bar (kg/m) 3.0
Dynamic Properties Minimum
Static Force Capacity 140kN
Dynamic Force Capacity 100kN
Displacement Capacity up to 500mm

Relevant Standards

Bar AS1442

General Features

  • Standard system supplied as a solid bolt with a dynamic device, polyethylene tube, resin mixing device, slot pin nut and dome ball attached.
  • The energy absorption ability of the Dynamic Solid Bolt is achieved by attaching a treated dynamic device to the bolt. When the seismic event occurs the solid bolt is able to be pulled through the dynamic device hence enabling the bolt to absorb the energy and remain intact. The polyethylene sleeve acts as a debonding agent that allows the solid bolt to slip through the dynamic device.
  • The dynamic device is mechanical therefore enabling repeatability in regard to the energy absorption process.
  • The dynamic device is installed in the factory where good manufacture quality control is assured.

Supply & Packaging

  • 100 bolts per pack
  • Packed using appropriate timbers and steel strapping