AS 3735 Supp 1:2001 PDF Download

The AS 3735 Supp 1:2001 standard provides guidance and information on the design and construction of concrete structures that are intended to retain liquids. The standard sets certain limits and guidelines for the use of concrete in these structures.

One important aspect mentioned in the standard is the minimum and maximum concrete strength limits. The minimum limit is set at 20 MPa, as strength grades below this are considered unsuitable for structural purposes. On the other hand, the maximum limit is set at 50 MPa, based on research and data available at the time of the standard's development. However, it is acknowledged that higher strength concretes are being used both in Australia and internationally, and the standard can be applied to such concretes by considering their specific physical properties.

Another limitation mentioned in the standard is regarding the use of lightweight aggregate in structural concrete. The standard indicates that most Australian structural concretes only employ lightweight coarse aggregate, resulting in concrete with a surface-dry density not less than 1800 kg/m3.

Lastly, the standard assumes a certain level of knowledge and competence among its users, specifically professional civil engineers experienced in designing concrete structures for retaining liquids. It is intended that the standard be primarily applied and interpreted by such qualified individuals, or equally qualified but less-experienced persons working under their guidance.