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1926.1414(e)(4) Additional Requirements for Rotation Resistant Ropes for Boom Hoist Reeving

OSHA 1926 Construction > CC Cranes & Derricks in Construction > 1926.1414 Wire Rope--Selection and Installation Criteria > 1926.1414(e) Rotation Resistant Ropes > 1926.1414(e)(4) Additional Requirements for Rotation Resistant Ropes for Boom Hoist Reeving

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1926.1414(e)(4)(i)

Rotation resistant ropes must not be used for boom hoist reeving, except where the requirements of paragraph (e)(4)(ii) of this section are met.

Rotation resistant ropes may be used as boom hoist reeving when load hoists are used as boom hoists for attachments such as luffing attachments or boom and mast attachment systems. Under these conditions, all of the following requirements must be met:

1926.1414(e)(4)(ii)(A)

The drum must provide a first layer rope pitch diameter of not less than 18 times the nominal diameter of the rope used.

1926.1414(e)(4)(ii)(B)

The requirements in § 1926.1426(a) (irrespective of the date of manufacture of the equipment), and § 1926.1426(b).

1926.1414(e)(4)(ii)(C)

The requirements in ASME B30.5-2004 sections 5-1.3.2(a), (a)(2) through (a)(4), (b) and (d) (incorporated by reference, see § 1926.6) except that the minimum pitch diameter for sheaves used in multiple rope reeving is 18 times the nominal diameter of the rope used (instead of the value of 16 specified in section 5-1.3.2(d)).

1926.1414(e)(4)(ii)(D)

All sheaves used in the boom hoist reeving system must have a rope pitch diameter of not less than 18 times the nominal diameter of the rope used.

1926.1414(e)(4)(ii)(E)

The operating design factor for the boom hoist reeving system must be not less than five.

1926.1414(e)(4)(ii)(F)

The operating design factor for these ropes must be the total minimum breaking force of all parts of rope in the system divided by the load imposed on the rope system when supporting the static weights of the structure and the load within the equipment's rated capacity.

1926.1414(e)(4)(ii)(G)

When provided, a power-controlled lowering system must be capable of handling rated capacities and speeds as specified by the manufacturer.

Related Code Sections

1926.1414(e)(4) Cranes & Derricks in Construction, Additional Requirements for Rotation Resistant Ropes for Boom Hoist Reeving

Rotation resistant ropes must not be used for boom hoist reeving, except where the requirements of paragraph (e)(4)(ii) of this section are met ...

1926.1414(e)(4)(ii)(B) Cranes & Derricks in Construction,

The requirements in § 1926.1426(a) (irrespective of the date of manufacture of the equipment), and § 1926.1426(b) ...

1926.1414(e)(4)(ii)(F) Cranes & Derricks in Construction,

The operating design factor for these ropes must be the total minimum breaking force of all parts of rope in the system divided by the load imposed ...