CSA M430:90 (R2021)
Roof and rock bolts, and accessories
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détails du produit
Preface
This is the first edition of CSA Standard CAN/CSA-M430. It was developed to serve as a guide for the protection against hazards to humans working in the mining industry, and/or any other industry using ground support systems.
In the preparation of this first edition the ASTM Standard Specification for Roof and Rock Bolts and Accessories (ASTM F432-88), and changes thereto, have been carefully studied and grateful acknowledgement is given to that organization for the material used.
The object of this Standard is to establish essential requirements and minimum standards for roof and rock bolts as well as accessories. In the preparation of this Standard consideration has been given to the prevention of hazard and injury to persons and property, and also given to proper maintenance and operation. Due regard has been given to recognized codes and standards now in force.
Scope
1.1
This Standard covers the chemical, mechanical, and dimensional requirements for roof and rock bolts and accessories. Addressed in this Standard are double-end threaded, headed, and slotted steel bars; fully grouted bolts and threaded bars; mechanical anchorage devices used for point anchorage applications; roof truss systems; partially grouted deformed bolts; and other frictional anchorage devices. All of these products represent various designs used for ground support systems.
1.2
The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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