Note that this standard has been updated, and you will need to meet the requirements set out in AS 1481.1:2021 Cranes, Hoists and Winches - General Requirements.
You will need to comply with this standard if you intend to construct toilets that are able to safely lifted.
This standard specifies the general requirements for cranes, hoists, winches, and their components, and appliances intended to carry out similar functions.