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The 1999 edition of AS 1684.4 is amended as follows; the amendments should be inserted in the appropriate places.

This Standard specifies requirements for the dimensions and properties of three grades of hardboard; appendices provide information on recommended procedures for testing and acceptance, purchasing guidelines, recommended practices for handling and storage of hardboard, and preferred sheet dimensions and quantities.

Part 11 deals with requirements for the design and installation of landing doors to protect openings in fire-rated liftwells against the passage of fire, where the doors are required to have a fire-rated certificate.

Specifies requirements for materials, construction and installation, including some aspects of performance, for flexible duct for air-handling systems in buildings and facilities.

This standard sets out a method of test to determine whether in the presence of moisture the fibres of thermal insulation when in contact with metals normally used in dwellings will cause corrosion.

The 2002 edition of AS 4254 is amended as follows; the amendments should be inserted in the appropriate places.

Covers design of encased beams and composite beams with slabs incorporating profiled steel sheeting; flexural design by either the load factor method or the working strength method; serviceability; shear connection design; longitudinal shear transfer; construction; and testing of shear connectors.

This standard sets out a method for determining the steady-state thermal transmission properties of thermal insulation materials within the limits set by Clause 5, by means of a heat flow meter.

Describes a minimum standard of installation for particleboard flooring used in domestic housing; procedures may also apply to particleboard used as flooring in similar applications where the particleboard is applied over a system of parallel joists; specifies subfloor clearance and ventilation, floor joist spacing and sheet fixing for fitted and platform flooring systems.

Sets out test procedures and criteria for the determination of fire-resistance of elements of building construction. Follows the basic principles and provisions contained in ISO 834.