This site will look much better in a browser that supports web standards, but it is accessible to any browser or Internet device.
© Workers' Compensation Board of British Columbia. All rights reserved. No part of this document may be copied, reproduced, or distributed for profit or other commercial enterprise, nor may any part be incorporated into any other publication, without written permission of the Workers' Compensation Board of B.C.
This Standard pertains to mobile industrial equipment exposed to hazards from falling objects such as bricks, concrete blocks, and hand tools that may fall from relatively low heights encountered in operations such as highway maintenance or landscaping and other services on construction sites.
This standard is intended to describe the minimum requirement for the design and selection of plates for roof construction.
2.1. Option One - Testing Method
The roof shall be designed to the Minimum Performance Criteria for Falling Object Protective Structure (FOPS) for Industrial Equipment - SAE J1043.
2.2. Option Two - Minimum Recommended Size
The roof shall be designed in accordance with the minimum recommended size as outlined in §4.0.
The roof plate shall be designed in accordance with the design criteria as outlined in §2.0.
All frame members and supports of the Cab Protective Structure shall be designed to resist the applied load. Equipment covered by SAE J1040 shall be designed in accordance with SAE J1040 or its equivalent.
Weldments shall conform to applicable sections of General Specifications for welding of Steel Structures, CSA W59.1-1970 (or latest revision thereof) and shall be performed by licensed welders only.
Minimum thickness of roof plate shall be 10 ga, equivalent to 3.4 mm (0.1345 in).
The above is designed on the assumption that stiffeners will be used to limit the unstiffened areas not to exceed 7740 cm2 (1200 in2).