Mich. Admin. Code R. 408.42520 - Concrete mixing, pouring, and floating
Rule 2520.
(1) A
concrete mixer that is equipped with a 1-yard or larger loading skip shall be
equipped with a mechanical device to clear the skip of material.
(2) A guardrail that is capable of
withstanding a 200-pound side thrust shall be provided on each side of a skip
on a mixer that has a capacity of 1 or more yards.
(3) The handle on a bull float that is used
where it may contact an energized electrical conductor shall be constructed of
nonconductive material or shall be insulated with a nonconductive sheath that
has electrical and mechanical characteristics which provide the equivalent
protection of a handle constructed of nonconductive material.
(4) A powered and rotating-type concrete
troweling machine that is manually guided shall be equipped with a control
switch that will automatically shut off the power when the operator removes his
or her hands from the equipment handles or switch.
(5) The handles of a concrete buggy shall not
extend horizontally beyond the wheels on either side of the buggy.
(6) A concrete bucket that is equipped with a
hydraulically or pneumatically operated gate shall have a positive safety latch
or a similar safety device installed to prevent premature or accidental
dumping. The bucket shall be designed to prevent aggregate and loose material
from accumulating on the top and sides of the bucket.
(7) An employee shall not be permitted to
ride a bucket or walk or work under a bucket that is suspended from a crane or
cableway.
(8) A concrete bucket
that is positioned by a crane or cableway shall be suspended from an approved
swivel safety-type hook.
(9) A
pumpcrete or similar system using discharge pipe shall have pipe supports that
are designed for a 100% overload. Compression air hoses in the system shall be
provided with positive fail-safe joint connectors to prevent the separation of
sections when pressurized.
(10) A
runway, ramp, or scaffold shall be provided for placement of concrete in areas
such as walls, piers, columns, and beams, as prescribed in Construction Safety
Standards Part 12 "Scaffolds and Scaffold Platforms," Part 21 "Guarding of
Walking and Working Areas," and Part 45 "Fall Protection," as referenced in
R
408.42503.
(11) A concrete mixer, or other equipment,
such as a compressor, screen, or pumps used for concrete construction
activities, where inadvertent operation of the equipment may occur and cause
injury, shall be locked out when an employee is performing maintenance or
repair. An employee who is inside a concrete mixer performing maintenance or
repair shall have the only key to the lock.
(12) Sections of tremies and similar concrete
conveyances shall be secured with wire rope, or equivalent materials, in
addition to the regular couplings or connections.
Notes
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