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AS 4421:2023 specifies the minimum requirements for the operation and management of an organization providing protective security services.

Sets out requirements and safety principles relating to the design, installation, and operation of industrial appliances that involve the combustion of gas or liquid fuel, or other fuel in air suspension, or the generation of combustible vapours in such appliances.

Specifies requirements for the design and use of street name and community facility name signs on all types of roads except expressway type roads.

Provides architects, builders, drafting officers and others in the building industry with a common method for the representation of buildings and their components to enable the preparation and unambiguous interpretation of architectural drawings.

Specifies requirements additional to those in AS 1418.1 covering builders hoists and associated equipment. Types included are materials hoists, concrete skip hoists and personnel and materials hoists as defined in AS 2549. Application, classification, loads, load combinations, design, construction, marking and testing are covered. Appendices provide information that should be supplied with tender for supply of a hoist and hazards which should be considered by the designer when designing the hoist.

Sets out minimum requirements for the materials, plant and equipment used in the supply of concrete; the production and, if applicable, the delivery of concrete in the plastic state; specifying, sampling, testing and compliance with specified properties of plastic and hardened concrete; and the uniformity of mixing.

Sets out methods of measuring the frictional characteristics of existing pedestrian surfaces in wet and dry conditions.

Specifies the requirements for hot-dip galvanized bolts and step bolts with ISO metric coarse pitch series threads for normal and low temperature applications in tower construction, and associated nuts and washers.

Recommends good practice for, and sets out the process by which, radiocommunications sites should be planned, sited, constructed and operated to meet the communications objectives of those facilities. It particularly addresses the sharing of radiocommunications sites and interference problems which could arise. It is intended to provide information to Federal, State and local government authorities, facilities planners, site planners, organizations and members of the public on the effects that existing or planned developments could be expected to have on the operation of such facilities, and vice versa.

Sets out requirements for preservative-treated sawn and round timber for protection against decay, insect or marine borer attack.