California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 4 - Construction Safety Orders › Article 14 - Construction Hoists › Section 1604.16 - Car Frames and Platforms

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Requirement for Car Frames.
Every hoist car shall have a frame. The car frame and
						platform may be an integral part of the car construction.
(b) Guide Members.
Car frames shall be guided on each guide member by upper
						and lower guide shoes or rollers attached to the frame.
(c) Design of Car Frames and Guide Shoes or
					 Rollers.
The frame and its guide shoes or rollers shall be
						designed to withstand the forces resulting under the loading conditions for
						which the hoist is designed.
(d) Underslung or Subpost Car Frames.
The vertical distance between the top and bottom guide
						shoes of a hoist car having a subpost car frame, or having an underslung car
						frame located entirely below the car platform, shall be not less than 40% of
						the distance between guide rails.
(e) Car Platforms.
Every car shall have a platform consisting of a
						nonperforated floor attached to a platform frame supported by the car frame and
						extending over the entire area within the car enclosure. The platform frame
						members and the floor shall be designed to withstand the forces developed under
						the loading conditions for which the hoist is designed and
						installed.
(f) Materials for
					 Car Frames and Platform Frames.
(1) Car frames
					 and outside members of platform frames shall be made of steel or other
					 metals.
(2) Cast iron shall not be
					 used for any part subject to tension, torsion, or bending.
EXCEPTION: Exceptions are guide rollers, guide shoes and
						compensating rope anchorages.
(3) Steel, where used in the construction of
					 car frames and platforms, shall conform to the requirements given in Sections
					 1604.16(f)(3)(A)
					 and 1604.16(f)(3)(B).
EXCEPTION: Steels of greater strength than those
						specified may be used provided they have an elongation of not less than 22% in
						a length of 2 inches and provided that the stresses and deflections conform to
						the requirements of Sections
						1604.16(h) and
						1604.16(i),
						respectively.
(A) Car Frame and
					 Platform Frame Members.
Steel shall be rolled, forged, or cast, conforming to the
						requirements of the following American National Standards:
1. Rolled and Formed Steel: American National
					 Standard Specification for Structural Steel, G41.5-1970 (ASTM A36-69) or
					 American National Standard Specification for Low and Intermediate Tensile
					 Strength Carbon Steel Plates of Structural Quality, G24.2-1972 (ASTM A283-70a),
					 Grade D.
2. Forged Steel: American
					 National Standard Specification for Carbon Steel Forgings for General
					 Industrial Use, G55.20-1969 (ASTM A235-67), Class C.
3. Cast Steel: American National Standard
					 Specifications for Mild to Medium strength Carbon Steel Castings for General
					 Application, G50.1-1972 (ASTM A27-71), Grade 60/30.
(B) Rivets, Bolts, and Rods.
Steel used for rivets, bolts, and rods shall conform to
						the following American National Standards:
1. Rivets: American National Standard
					 Specification for Steel Structural Rivets, G42.2-1968 (ASTM A502-65).
2. Bolts and Rods: American National Standard
					 Specification for Low Carbon Steel Externally and Internally Threaded Standard
					 Fasteners, G38.5-1969 (ASTM A307-68).
(4) Metals other than steel may be used in
					 the construction of car frames and platforms provided the metal used has the
					 essential properties to meet all the requirements for the purpose in accordance
					 with good engineering practice, and provided the stresses and deflections
					 conform to the requirements of Sections
					 1604.16(h) and
					 1604.16(i),
					 respectively.