Ohio Administrative Code › Title 4123:1 - Division of Safety and Hygiene › Chapter 4123:1-3 - Construction › Section 4123:1-3-07 - Cranes, hoists, and derricks

Current through all regulations passed and filed through July 1, 2024
(A) Reserved.
(B) Definitions.
(1) "Derrick" means an apparatus consisting
			 of a mast or equivalent members held at the top by guys or braces, with or
			 without a boom, for use with a hoisting mechanism and operating
			 ropes.
(2) "Derrick, A-frame" means
			 a derrick in which the boom is hinged from a cross member between the bottom
			 ends of two upright members spread apart at the lower ends and united at the
			 top, the upper ends of the boom being secured to the upper junction of the side
			 members and the side members braced or guyed from the junction point.
(3) "Derrick, basket" means a derrick without
			 a boom, similar to a gin pole, with its base supported by ropes attached to
			 corner posts or other parts of the structure. The base is at a lower elevation
			 than its supports. The location of the base of a basket derrick can be changed
			 by varying the length of the rope supports. The top of the pole is secured with
			 multireeved guys to position the top of the pole to the desired location. By
			 varying the length of the upper guy lines, the load is raised and lowered by
			 ropes through the sheave or block secured to the top of the pole.
(4) "Derrick, breast" means a derrick without
			 a boom, the mast consisting of two side members spread farther apart at the
			 base than at the top, tied together at the top and bottom by rigid members, the
			 top held from tipping by guys and the load raised and lowered by ropes through
			 a sheave or block secured to the top crosspieces.
(5) "Derrick, Chicago boom" means an ordinary
			 derrick boom so installed as to utilize a building column or tower hoist as the
			 mast, and to depend upon the structural steel beam connections or bracing to
			 take the place of the stiff legs. The lower end of the boom is attached to the
			 building columns by means of a combination hinge pin and swivel pin to a heavy
			 steel plate clamp attached to the column. The derrick is completed with load
			 fall line and boom fall line.
(6)
			 "Derrick, gin pole" means a derrick consisting only of a mast with guys so
			 arranged as to permit leaning the mast in any direction, the load being raised
			 or lowered by ropes leading through sheaves or blocks at the top of the mast.
			 Where the size and/or spacing of guy lines do not
			 result in the gin pole being stable in both boomed and vertical positions, the
			 employer must ensure that the derrick is not used in an unstable
			 position.
(7) "Derrick, guy"
			 means a fixed derrick consisting of a mast capable of being rotated, supported
			 in a vertical position by 
									a minimum number of six guys, with equal spacing,
			 except:
(a)
										
			 Where a qualified person or derrick manufacturer approves variations from these
			 requirements and revises the rated capacity to compensate for such variations;
			 or
(b)
										 Where more guys and a boom whose bottom end is
			 hinged or pivoted to move in a vertical plane, with lines between the head of
			 the mast and the head of the boom for raising and lowering the boom lines from
			 the head of the boom for raising and lowering the load.
(8) "Derrick, stiff leg" means a derrick
			 similar to a guy derrick except that the mast is supported or held in place by
			 two or more stiff members capable of resisting either tensile or compressive
			 forces. Sills are generally provided to connect the lower ends of the two stiff
			 legs to the foot of the mast.
(9)
			 "Derrick, tripod" means a derrick consisting of three upright legs or members
			 securely fastened together at the top, supporting a hoisting mechanism and
			 operating ropes. The legs can be spread to various angles.
(10) "Hoist, mast" means a hoist having no
			 less than two upright parallel members forming the mast, on which the cage is
			 suspended outside of the parallel members. The entire unit is portable, but not
			 self-propelled.
(11) "Hoist,
			 material" means a hoist for raising and lowering material only, with the
			 hoisting of persons being prohibited except for
			 inspection and maintenance.
(12) "Hoist, personnel" means a mechanism for
			 use in connection with construction, alteration, maintenance, or demolition of
			 buildings, structures, or other work. It is used for hoisting and lowering
			 employees or material or both, is equipped with a car that moves on guide
			 members during its vertical movement, and includes a hoistway.
(13) "Hoist tower" means a tower constructed
			 of sections forming a shaftway in which a cage or platform travels.
			 Towers inside of structures shall be enclosed on all
			 four sides throughout the full height.
(14) "Prime mover" means equipment used as
			 the primary source of power, such as engines and motors.