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The method for determining the classification and the design and construction requirements for ground and waffle slab, stiffened rafts, strip, pad and piled footings.
Tuesday, 25th January 2022
AS 2870-2011 sets outs the method for determining the classification of a site and the design and construction requirements for slab on ground, stiffened rafts, waffle slab, strip footings, pad footings and piled footings.
What's included
AS 2870-2011 contains six sections:
- Section 1: Deals with what the standard covers - the application of the Standard, the performance requirements for footing systems and defined terms
- Section 2: Deals with the methods for - undertaking a site classification and site investigation requirements
- Section 3: Provides the Deemed to Satisfy designs requirements - of footing systems for: slab on ground, stiffened rafts, waffle slab, strip footings, pad footings and piled footings
- Section 4: Deals with designs - of footing systems by engineering principles
- Section 5: Provides specific requirements - for footing systems such as drainage, reinforcement placement, concrete grade and cover, vapour barriers and dealing with aggressive soils
- Section 6: Deals with the construction footing systems - on filled sites and additional requirements for more reactive soils
The standard also contains nine appendices:
- Appendix A (Informative) lists the parties involved in the design, construction and maintenance of residential slabs and footings, and their functions and responsibilities
- Appendix B (Informative) deals with foundation performance and maintenance
- Appendix C (Normative) provides the classification of damage to wall and concrete floor due to foundation movements. (The Standards and Tolerances)
- Appendix D (Normative) provides table to assist with site classification by soil profile identification
- Appendix E (Normative) deals with uplift design for braced stumps and pad footing systems
- Appendix F (Informative) deals with the soil structure interaction analysis for stiffened rafts
- Appendix G (Informative) deals with the design procedures for deep footings such as driven pile footings, bored piers and steel screw piles
- Appendix H (Informative) is a design guide for the footings and the effects of trees
- Appendix I (Informative) is the bibliography.
The Informative Commentary provides an explanation of the sections and appendices contained in this Standard and is for information and advice only.
This Standard is referenced in both NCC Volumes One and Two. In Volume One – it is referenced for the purpose of the requirements for a vapour barrier to be installed in accordance with AS 2870-2011 to prevent rising moisture through the floor. In Volume Two this standard is referenced in several places for the design and construction of slabs and footings for Class 1 and 10 buildings.
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Who is it for?
Building Professionals
This resource is designed for builders and industry professionals who need to understand the design and construction requirements for residential slabs and footings.
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