Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › Construction Safety and Health Standard › Part 25 - CONCRETE CONSTRUCTION › Section R. 408.42520 - Concrete mixing, pouring, and floating

Current through Vol. 24-12, July 15, 2024
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.