Mich. Admin. Code R. 408.40932 - Excavation; consideration of soil types; water; slide hazards
Rule 932.
(1) If
different textured soils are encountered in the side of an excavation, each
soil type of the excavation shall be cut to the proper angle of repose, except
that the slope shall not steepen between the toe of the slope and the ground
level where soft clay or running soil is encountered in the lower
cut.
(2) An employee shall not work
in an excavation in which there is accumulated water or in which water is
accumulating unless precautions have been taken to protect employees against
the hazards posed by water accumulation. The precautions necessary to protect
employees adequately vary with each situation, but may include special support
or shield systems to protect from cave-ins, water removal to control the level
of accumulating water, or the use of a safety harness and lifeline.
(3) If water is controlled or prevented from
accumulating by the use of water removal equipment, the water removal equipment
and operation shall be monitored by a competent person or a monitoring system
to ensure that the equipment is properly operated.
(4) An ongoing inspection of an excavation or
trench shall be made by a competent person. After every rainstorm or other
hazard-producing occurrence, an inspection shall be made by a competent person
for evidence of possible slides or cave-ins. Where these conditions are found,
all work shall cease until additional precautions, such as additional shoring
or reducing the slope, have been accomplished.
(5) When installed forms, walls, or similar
structures create a trench between the form, wall, or structure and the side of
the excavation, an employer shall comply with the provisions of
R 408.40941 to
R 408.40944.
Notes
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