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1910.181(a)(4) Breast Derrick
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Breast derrick means a derrick without boom. The mast consists of two side members spread farther apart at the base than at the top and tied together at top and bottom by rigid members. The mast is prevented from tipping forward by guys connected to its top. The load is raised and lowered by ropes through a sheave or block secured to the top crosspiece.
Related Code Sections
1910.181(a)(4) Materials Handling and Storage, Breast Derrick
Breast derrick means a derrick without boom. The mast consists of two side members spread farther apart at the base than at the top and tied together ...
OSHA 1910 General Industry > N Materials Handling and Storage > 1910.181 Derricks > 1910.181(a) Definitions Applicable to This Section > 1910.181(a)(4) Breast Derrick
1910.181(a)(1) Materials Handling and Storage, Derrick
A derrick is an apparatus consisting of a mast or equivalent member held at the head by guys or braces, with or without a boom, for use ...
OSHA 1910 General Industry > N Materials Handling and Storage > 1910.181 Derricks > 1910.181(a) Definitions Applicable to This Section > 1910.181(a)(1) Derrick
1910.181(a)(15) Materials Handling and Storage, Derrick Bullwheel
Derrick bullwheel means a horizontal ring or wheel, fastened to the foot of a derrick, for the purpose of turning the derrick by means of ropes ...
OSHA 1910 General Industry > N Materials Handling and Storage > 1910.181 Derricks > 1910.181(a) Definitions Applicable to This Section > 1910.181(a)(15) Derrick Bullwheel
1910.181(a)(3) Materials Handling and Storage, Basket Derrick
A basket derrick is a derrick without a boom, similar to a gin pole, with its base supported by ropes attached to corner posts or other parts ...
OSHA 1910 General Industry > N Materials Handling and Storage > 1910.181 Derricks > 1910.181(a) Definitions Applicable to This Section > 1910.181(a)(3) Basket Derrick
1910.181(a)(32) Materials Handling and Storage, Standby Derrick
A standby derrick is a derrick not in regular service which is used occasionally or intermittently as required ...
OSHA 1910 General Industry > N Materials Handling and Storage > 1910.181 Derricks > 1910.181(a) Definitions Applicable to This Section > 1910.181(a)(32) Standby Derrick