OHS Code

Published Date: July 01, 2009
Bookmark this page

Part 6 Cranes, Hoists and Lifting Devices

Section 97 Safe use and design

(1) An employer must ensure that a roofer’s hoist has counterweights

(a) designed as a component part of the hoist to remain securely attached to the hoist until all lifting is completed, and

(b) heavy enough to counterbalance 4 times the maximum weight of the load being lifted.

(2) A person must not use roofing materials as a counterweight.

(3) An employer must ensure that a roofer’s hoist is inspected daily by a competent worker designated by the employer.

(4) An employer must ensure that bolts and pins used to interconnect component parts of a roofer’s hoist are equipped with safety pins that prevent them from being dislodged.

(5) A worker must

(a) use a roofer’s hoist only for vertical lifting, and

(b) not exceed the design load limits of the roofer’s hoist.

(6) An employer must ensure that a gallows frame roofer’s hoist is constructed of lumber sized as follows, or of material that has the same or greater properties as the lumber used for the same function:

(a) thrustout – 38 millimetres by 184 millimeters lumber;

(b) uprights – 90 millimetres by 90 millimetres lumber;

(c) braces and base plates – 38 millimetres by 140 millimetres.

(7) An employer must ensure that a gallows frame roofer’s hoist

(a) has a hoisting line with a breaking strength of not less than 25 kilonewtons,

(b) has thrustouts placed on their edge that do not overhang more than ¼ of their length, and

(c) has sheaves securely attached to the thrustouts without using single strand wire or nails.