Rollover Protective Structures (ROPS) for Agricultural, Construction, Earthmoving, Forestry, Industrial and Mining Machines - Part 1: General Requirements
This Standard is a companion to the other Standards of the B352 series and can
only be used in conjunction with each of the Standards.
This series of Standards details the design, testing, performance, and safety
requirements for rollover protective structures (ROPS) for certain types of
self-propelled machines for agricultural, construction, earthmoving, forestry,
industrial, and mining operations, as listed in Clauses 1.3, 1.4, and 1.5.
CSA Standard B352.1 covers the performance requirements, based on destructive
testing, for ROPS on wheeled agricultural tractors with a mass greater than 800
kg. It may also be used as an alternative method for testing ROPS on
general-purpose industrial tractors.
CSA Standard B352.2 covers the performance requirements, based on destructive
testing, for ROPS on industrial tractors, motor graders, prime movers,
skidders, tracked dozers, tracked loaders, wheeled dozers, wheeled loaders,
backhoe loaders, rigid-frame dumpers, compactors, or rollers, with machine mass
greater than 700 kg.
CSA Standard B352 may continue to be used for developing and testing ROPS on
machines not covered by either CSA Standards B352.1 or B352.2, such as ROPS for
small, specialized agricultural tractors. As well, Clause 6 of B352 should be
used for analytical design of one-of-a-kind machines until revised analytical
guidelines are developed.
The testing of ROPS aims at minimizing the likelihood of operator injury
resulting from accidental overturning during normal operation. Although ROPs
meeting the requirements of this series of Standards may not provide crush
protection under all circumstances of machine overturn, it is expected that
protection will be provided for an operator wearing a seatbelt under at least
the following conditions:
(a) a 360° roll about the machine's longitudinal axis on a hard clay surface of
30° maximum slope, at forward speeds up to 16 km/h, when not losing contact
with the slope; and
(b) a 180° rear or frontal overturn on a hard dry surface, without losing
contact with the surface.