1. 1. Maximum allowable suspended load on the hoist, less the weight of the hoisting ropes, less the weight of tail ropes, less the weight of the conveyances and attachments.
2. 2. The breaking strength of the rope, divided by the required factor of safety, minus the maximum weight of rope sus­pended in one compartment, minus the weight of the con­veyance and attachments in that compartment; and where multiple ropes are used, the lowest breaking strength at any rope shall be used for all ropes in load calculations.
3. 3. The unbalanced load on the hoist as rated by the manu­facturer, which shall not be exceeded.
4. 4. The maximum allowable load on any conveyance, which shall not be greater than that for which the conveyance was rated by the manufacturer.

The maximum material allowed on the conveyance of a friction hoist shall be determined from the lesser of the following calcula­tions:

Historical Note

Adopted effective April 7, 1976 (Supp. 76-2).