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AS 5100.3:2017


Bridge design, Part 3: Foundation and soil-supporting structures

Sets out 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. Also covers the design of foundations for road furniture, such as lighting poles, sign support structures and noise barriers.
Published: 31/03/2017
Pages: 48
Table of contents
Cited references
Content history
Table of contents
About this publication
1 Scope and general
1.1 Scope
1.2 Application
1.3 Normative references
1.4 Definitions
1.5 Notation
1.6 Site investigation
1.6.1 General
1.6.2 Ground investigations
1.7 Matters for resolution before design
2 General design requirements
2.1 Aim
2.2 Design
2.3 Design for strength
2.3.1 General
2.3.2 Foundations
2.3.3 Soil-supporting structures
2.3.4 Characteristic values
2.3.5 Geotechnical strength reduction factors (ϕg)
2.4 Design for stability
2.5 Design for serviceability
2.6 Design for strength, stability and serviceability by load testing a prototype
2.7 Design for durability
2.8 Design for other relevant design requirements
3 Loads and load combinations
3.1 General
3.2 Loads
3.2.1 General
3.2.2 Loads induced by soil movement
3.2.3 Construction loads
3.2.4 Water pressure
3.3 Load combinations for strength and stability design
3.3.1 General
3.3.2 Foundations
3.3.3 Soil-supporting structures
3.4 Load combinations for serviceability design
4 Durability
4.1 General
4.2 Durability of timber
4.3 Durability of concrete
4.4 Durability of steel
4.5 Durability of other materials
5 Shallow footings
5.1 Scope of section
5.2 Loads and load combinations
5.3 Design requirements
5.3.1 General
5.3.2 Footing depth and size
5.3.3 Design for geotechnical strength General Overall stability Ultimate bearing failure Failure by sliding
5.3.4 Design for structural strength General Structural failure as a result of footing movement
5.3.5 Design for serviceability limit states General Tilting
5.3.6 Design for durability
5.4 Structural design and detailing
5.5 Materials and construction requirements
6 Piled foundations
6.1 Scope of section
6.2 Loads and load combinations
6.3 Design requirements
6.3.1 General
6.3.2 Design for strength
6.3.3 Design for serviceability
6.3.4 Design for durability
6.4 Structural design and detailing
6.4.1 General
6.4.2 Design details relevant to specific types of piles Precast reinforced concrete piles Prestressed concrete piles Cast-in-place concrete piles Steel piles
6.5 Materials and construction requirements
6.5.1 General
6.5.2 Spacing, edge distance and embedment of piles
6.6 Testing
7 Anchors
7.1 General
7.2 Loads and load combinations
7.3 Design requirements
7.3.1 General
7.3.2 Site investigation
7.3.3 Design for strength
7.3.4 Design for other relevant factors
7.3.5 Design for serviceability
7.3.6 Design for durability
7.4 Materials requirements
7.5 Anchor installation plan
7.6 Anchor testing
7.6.1 General
7.6.2 Proof tests
7.6.3 Suitability tests
7.6.4 Acceptance tests
7.6.5 Characteristic anchor ultimate strength
7.7 Monitoring
8 Retaining walls and abutments
8.1 Scope of section
8.2 Loads and load combinations
8.3 Design requirements
8.3.1 Design for strength and stability
8.3.2 Calculation of earth pressures
8.3.3 Design for eccentric and inclined loads
8.3.4 Design for serviceability
8.3.5 Design for durability
8.4 Structural design and detailing
8.4.1 General
8.4.2 Joints
8.4.3 Shrinkage and temperature reinforcement
8.5 Materials and construction requirements
8.6 Drainage
9 Buried structures
9.1 General
9.2 Loads and load combinations
9.3 Design requirements
9.3.1 Design for strength and stability
9.3.2 Design for serviceability
9.3.3 Design for durability
9.4 Structural design and detailing
9.5 Materials and construction requirements
Appendix A
A1 Scope
A2 Definitions and notation
A2.1 Definitions
A2.1.1 Free length (Lfr)
A2.1.2 Effective free length (Lef)
A2.1.3 Jacking load (Tj)
A2.1.4 Lock-off load (To)
A2.1.5 Test load (Tp)
A2.1.6 Minimum breaking load (Tu)
A2.1.7 Initial datum load (Ta)
A2.1.8 Initial residual load (Tri)
A2.1.9 Residual load (Tr)
A2.1.10 Lift-off test
A2.1.11 Tendon bond length (Lb)
A2.2 Notation
A3 Load tests and assessment
A3.1 General
A3.2 Load testing
A3.2.1 General
A3.2.2 Loading and monitoring
A3.2.3 Proof tests
A3.2.4 Suitability tests
A3.2.5 Acceptance tests
A3.2.6 Assessment and acceptance criteria
A3.2.6.1 General
A3.2.6.2 Assessment criteria and mode of application for all suitability anchors and all acceptance tests
Amendment control sheet
AS 5100.3:2017
Amendment No. 1 (2023)
Revised text amendment
Cited references in this standard
Bridge design, Part 6: Steel and composite construction
Structural steel welding, Part 3: Welding of reinforcing steel
Structural steel welding, Part 1: Welding of steel structures
Bridge design, Part 5: Concrete
Bridge design, Part 2: Design loads
Content history
DR AS 5100.3
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