Cal. Code Regs. Tit. 8, § 3104 - Factor of Safety for Driving Machines and Sheaves
(a) Factor of Safety for Driving Machines and
Sheaves.
(1) The factor of safety to be used
in the design of driving machines and in the design of sheaves used with
hoisting and compensating ropes shall be not less than:
(A) Eight for steel, bronze, or for other
metals having an elongation of at least 14 percent in a length of 2
inches.
(B) Ten for cast iron, or
for other metals having an elongation of less than 14 percent in a length of 2
inches.
(2) The load to
be used in determining the factor of safety shall be the resultant of the
maximum tensions in the ropes leading from the sheave or drum with the elevator
at rest and with rated load in the car.
(b) Data Required for Approval.
(1) Two complete sets of assembly and detail
drawings of the governor shall be submitted, and shall show the following:
(A) The construction of the governor and the
dimensions of major parts for identification.
(B) The adjustment range and values of the
data as marked on the governor marking plate required by Section
3036(h).
(2) The results of a test performed at the
maximum tripping speeds for which the approval is to be issued. This test shall
be witnessed by an authorized representative of the Division of Industrial
Safety, or the division may accept reports of witnesses recognized as competent
by the division.
Notes
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