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 1604.14 - Car and Counterweight Buffers
Current through Register 2024 Notice Reg. No. 38, September 20, 2024
(a) Type and Location.
Buffers of the spring or oil type shall be installed under the cars and counterweights of personnel hoists.
NOTE: Section 1604.5(b)(1) requires buffers under all cars and counterweights in hoistways which are above accessible spaces.
Spring buffers or their equivalent may be used where the rated speed is not in excess of 300 feet per minute.
EXCEPTION: FOR RATED SPEEDS OF 301 TO 600 FEET PER MINUTE, SPRING BUFFERS HAVING A STROKE OF NOT LESS THAN 12 INCHES MAY BE USED PROVIDED A TERMINAL SPEED LIMITING DEVICE CONFORMING TO THE REQUIREMENTS GIVEN UNDER SECTION 1604.23(D) IS PROVIDED.
Buffers shall be located symmetrically with reference to the vertical center line of the car frame or the counterweight frame within a tolerance of 2 inches.
(b) Construction and Requirements for Spring Buffers.
The stroke of the buffer spring, as marked on its marking plate, shall be equal to, or greater than, the following:
Rated Car Speed (feet per minute) |
Stroke (inches) |
100 or less |
1 1/2 |
101 to 150 |
2 1/2 |
151 to 200 |
4 |
201 to 250 |
6 |
251 to 300 |
9 |
Buffers for cars and counterweights shall be of the following:
EXCEPTION: When the requirements of Section 1604.5(b)(2) necessitate a greater load rating.
Each spring buffer shall have permanently attached to it a metal plate marked in a legible and permanent manner to show its stroke and load rating.
(c) Construction and Requirements for Oil Buffers.