This Standard sets out minimum design requirements and procedures for the design in limit states format of foundations and soil-supporting structures for road, rail and pedestrian bridges, culverts not specifically covered by other Standards, and subways of conventional size and form.Foundations include shallow footings, piles and anchorages.Soil-supporting structures include retaining walls, abutments and buried structures.The provisions of this Standard also cover the design of foundations for road furniture, such as lighting poles and sign-support structures and noise barriers.The Standard does not cover the design of—(a) corrugated steel pipes and arches;(b) precast reinforced concrete box culverts;(c) underground concrete drainage pipes; and(d) reinforced soil structures.NOTES: 1 For reinforced soil structures, refer to relevant authority specifications.2 The structures covered by this Standard are those specified in Clause 1 of AS 5100.1. This Standard is not applicable to situations outside the scope of AS 5100.1.3 The requirements for structural design and detailing of concrete and steel are specified in AS 5100.5 and AS/NZS 5100.6; however, a number of specific structural design provisions that result from soil-structure interaction are covered by this Standard.4 Requirements for corrugated steel pipes and arches are covered by AS/NZS 2041.1.5 Requirements for fibre-reinforced concrete pipes are covered by AS 4139.6 Requirements for underground concrete drainage pipes are covered by AS 3725 and AS 4058.

Originated as HB 77.3—1996.Revised and redesignated as AS 5100.3—2004.Second edition 2017. Originated as HB77.3-1996. Revised and redesignated as AS5100.3-2004. Second edition 2017. Originated as HB77.3-1996. Revised and redesignated as AS5100.3-2004. Second edition 2017. Reissued incorporating Amendment No 1 (December 2023).