16 / 20 / 24mm Solid Deformed Bolt

16, 20 & 24mm Solid Deformed Bolt

Physical Properties

 

16mm BoltMinimumTypical
Yield Strength350MPa65kN400MPa75kN
Ultimate Tensile Strength500MPa95kN600MPa105kN
Calculated Shear Strength60kN70kN
Standard Elongation17%22%
Uniform Elongation12%
Mass Per Metre1.21kg
Bar Diameter16mm
Cross Sectional Area of Bar 200mm2
Bar straightness to AS 1442-1991
Rolled Thread M24x3.0mm Pitch
20mm BoltMinimumTypical
Yield Strength500MPa150kN540MPa160kN
Ultimate Tensile Strength540MPa160kN635MPa190kN
Calculated Shear Strength100kN125kN
Standard Elongation5%20%
Tensile Strength of Threaded End140kN
Uniform Elongation12%
Mass Per Metre2.46kg
Bar Core Diameter19.5mm
Cross Sectional Area of Bar 300mm2
Major Bar Diameter23.0mm
Bar straightness to AS 1442-1991
Rolled Thread M24x3.0mm Pitch
24mm Bolt MinimumTypical
Yield Strength500MPa200kN540MPa220kN
Ultimate Tensile Strength540MPa220kN635MPa260kN
Calculated Shear Strength145kN170kN
Standard Elongation5%20%
Uniform Elongation12%
Tensile Strength of Threaded End200kN
Mass Per Metre3.55kg
Bar Core Diameter23mm
Cross Sectional Area of Bar 415mm2
Major Bar Diameter27.0mm
Bar straightness to AS 1442-1991
Rolled Thread M24x3.0mm Pitch

General Features

  • The Solid Deformed Bolt is manufactured from hot rolled reinforcing bar having rib deformations generally in a “herringbone” form.
  • The Solid Deformed Bolt has a standard thread roll formed at one end.
  • The solid deformed bolt is usually fully encapsulated with chemical anchors (refer to Section F), but can be effectively used with cementitious grouts.
  • Corrosion protection may be provided by hot dip galvanizing. (refer to Section G). Alternative coatings are available by negotiation.

Installation Guidelines

  • Hole diameters are critical for resin installations. If larger diameter holes are being used refer to "Posimix" bolts on page A1.11.
  • Hole depth is critical. Hole depth should be shorter than the bolt to allow for the height of the washer and nut.
  • After insertion of the chemical anchors the bolt is rotated through the anchors while being pushed to the back of the hole.
  • It is important to follow the chemical manufacturer’s recommended mixing and hold times as printed on the chemical anchor cartons. DO NOT OVER MIX.
  • For further details regarding installation procedures refer to DSI’s "Practical Guide to Rock Bolting."

Standard Lengths & Packaging

  • Standard bolt lengths range from 600 to 3000mm in 300mm increments.
  • Non-standard requirements are available by negotiation.
  • Bolts are packaged in bundles with threads protected by heavy duty polyethylene bags.
  • Bolt fittings, such as nuts, anti-friction washers and domed balls, are supplied fitted to rock bolts in the configuration requested.

Notes

  • Only DSI rock bolt components should be used to enable the optimum performance of the bolt system to be obtained.
  • DSI Mining Products Division is Quality Assured to ISO 9001:2000, Registration No.QAC/R61/0315.