This is the second edition of CSA Standard Z271 (now CAN3-Z271). Safety Code for Suspended Powered Platforms. It supersedes the first edition published in January, 1974 and Supplement No. 1 published in April, 1977. It is written in SI (metric) units.
This Standard applies to the design, construction, installation, operation, inspection, test, maintenance, alteration, and repair of suspended powered platforms designed to carry personnel for the purpose of gaining access to exterior and interior building surfaces.
(1) Powered platforms are recommended for use on buildings and structures over 30 m in height.
(2) Portable powered platforms are not recommended for travel exceeding 90 m.
This Standard does not apply to manually operated platforms