Revised standard includes tree effect Australian Standard, AS 2870-2011 Residential slabs and footings, extract. What does this mean; The depth of a Root barrier/moisture cutoff wall for protecting foundations is determined by the soil test data, and depths of two, three and four metres are not unusual. Sep 30, 2017. Residential Slabs and Footings Foundation Engineering. This Australian Standard was prepared by Committee BD 0. Residential Slabs and Footings. It was approved on behalf of the Council of Standards Australia on 2. This Standard was published on 1. AS 2870 Residential Slabs and Footings (Revision of AS 2870-1996). Residential slabs and footings. Residential footing system design and construction shall comply with AS 3600. 30 or more documents about as 2870 residential slabs and footings. AS 2870 Residential Slabs & Footings. 11.pdf AS 2870 Residential slabs and footings.
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AdvertisementEven with the right types of footings for the soil type, 'abnormal' changes in the moisture content of the soil beneath and around your house can cause problems. The forces and pressures that the reactive soil can exert when this happens can go beyond the capabilities of the slab's footing system, which can cause unsightly (and usually painfully expensive) damage to your house.Some of these abnormal circumstances include:. Long wet periods - where water ponds for a long time and soaks into the ground around your footing system.
Good drainage on the site where water's directed straight into the stormwater system can help to prevent this. Long dry periods - droughts, where the ground dries out and shrinks away from your footing systems. Damage during droughts can be avoided by keeping the soil around your house moist during droughts - concrete paths can also help keep soils moist. Leaking water - stormwater and sewerage pipes under a house are ticking time bombs for slabs.
These create localised wet spots which can lift and cause damage to a house in a matter of weeks. The best way to prevent this kind of damage is to be diligent and repair leaking pipes as soon as they're detected. As of 2011, there are now requirements for these pipes to be fitted with flexible mechanical joints to help deal with movement in reactive soils. Uneven watering and planting around your house - Lack of water or excess watering, watering unevenly and unbalance planting can create problems for your footings. The risk from this kind of problem can be reduced by regularly watering your garden to keep it moist, and during drought, by trimming back some of your plants. Having a neat native shrub garden at one end of your house which only needs a little maintenance and a well watered lawn for the kids at the other is considered quite normal, it's a classic example of an 'uneven watering situation' that can lead to structural damage.
Hot water systems and air conditioners - both of these systems typically have outflow pipes that can expel anywhere between 2 and 30 litres each day (depending on the season). If they're not directed into stormwater systems these outflow pipes can create localised 'hot spots' where reactive clays become wet, lift the ground and cause structural damage.The forces that reactive soil can generate through moisture variations is enormous. An informative article on the very important topic! The foundation of your home is extremely important and should be treated as such. The reactive soil has a slow, silent and massive power similar to a wave action in slow motion, and it often calls for major repairs. So, it is a must to do a soil test by geotechnical engineers. It’s the results of this test that help contractors and restumping teams to determine the best way to fortify your foundation.
Read more: http://www.restumping-melbourne.com.au/cognizant-reactive-soil-sites-part-i/. Yep an interesting article, my block has been classified P in an AS soil test report, just been estimated $40,00 for piers etc.Interesting thing for me is its an old suburb built in the 1960s, its full of houses built without the benefit if piers etc, My family owns 5 houses within 100 meters of the site, my nephew lives next door on a 60 year old brick veneer house without any cracks and all the floors etc are level. My mother across the road in a weatherboard place. The block only became available because the existing house burnt down.how did those guys build those houses 60 years ago without piers and they stood the test of time. Are we building the pyramids? Something to last a 1000 years?if its $ 40,000 for the footings it will put building out of our reach, it more than 20% of the building cost.
AS 2870 AS 2870—1996 (Incorporating Amendment Nos 1, 2, 3 and 4) Australian Standard™ Residential slabs and footings— Construction Building Code of Australia Primary referenced StandardThis is a free 7 page sample. Access the full version online.This is a free 7 page sample. Access the full version online. This Australian Standard was prepared by Committee BD-025, Residential Slabs and Footings. It was approved on behalf of the Council of Standards Australia on 12 April 1996 and published on 5 June 1996. The following are represented on Committee BD-025: The Association of Consulting Engineers, Australia Australian Building Codes Board Australian Chamber of Commerce and Industry Australian Geomechanics Society Australian Institute of Building Surveyors Building Management Authority of W.A. Cement and Concrete Association of Australia Clay Brick and Paver Institute Concrete Masonry Association of Australia Construction Industry Advisory Council Department of Local Government, W.A.
Foundation and Footings Society, Vic. Housing Industry Association Institution of Engineers, Australia Master Builders Australia National Association of Forest Industries Plastics and Chemicals Industry Association Residential Foundations and Footings Panel South Australian Footings Group Steel Reinforcement Institute of Australia University of Newcastle University of South Australia Keeping Standards up-to-date Standards are living documents which reflect progress in science, technology and systems. To maintain their currency, all Standards are periodically reviewed, and new editions are published. Between editions, amendments may be issued.
Standards may also be withdrawn. It is important that readers assure themselves they are using a current Standard, which should include any amendments which may have been published since the Standard was purchased. Detailed information about Standards can be found by visiting the Standards Australia web site at www.standards.com.au and looking up the relevant Standard in the on-line catalogue. Alternatively, the printed Catalogue provides information current at 1 January each year, and the monthly magazine, The Australian Standard, has a full listing of revisions and amendments published each month. We also welcome suggestions for improvement in our Standards, and especially encourage readers to notify us immediately of any apparent inaccuracies or ambiguities. Contact us via email at firstname.lastname@example.org, or write to the Chief Executive, Standards Australia International Ltd, GPO Box 5420, Sydney, NSW 2001. This Standard was issued in draft form for comment as DR 94400.This is a free 7 page sample.
Access the full version online. AS 2870—1996 (Incorporating Amendments Nos 1, 2, 3 and 4) Australian Standard™ Residential slabs and footings— Construction Originated as AS 2870—1986. Previous editions AS 2870.1—1988 and AS 2870.2—1990.
Revised, amalgamated and redesignated AS 2870—1996. Reissued incorporating Amendment No. 1 (January 1997).
Reissued incorporating Amendment No. 2 (June 1999).
Reissued incorporating Amendment No. 3 (November 2002). Reissued incorporating Amendment No. 4 (May 2003). COPYRIGHT © Standards Australia International All rights are reserved.
No part of this work may be reproduced or copied in any form or by any means, electronic or mechanical, including photocopying, without the written permission of the publisher. Published by Standards Australia International Ltd GPO Box 5420, Sydney, NSW 2001, Australia ISBN 0 7337 0560 XAS 2870—1996 2This is a free 7 page sample. Access the full version online. PREFACE This Standard was prepared by the Standards Australia Committee BD/25 on Residential Slabs and Footings to supersede AS 2870.1—1988 and AS 2870.2—1990. This Standard incorporates Amendments No. 1 (November 1997), No.
2 (June 1999), No. 3 (November 2002) and No. 4 (May 2003). The changes required by the Amendments are indicated in the text by a marginal bar and amendment number against the clause, note, table, figure or part thereof affected. The purpose of this Standard is to establish performance requirements and specific designs for footing systems for foundation conditions commonly found in Australia and to provide guidance on the design of footing systems by engineering principles. Although a wide range of conditions is covered, this Standard places particular emphasis on the design for reactive clay sites susceptible to significant ground movement due to moisture changes.
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The Standard takes account of the following: (a) Swelling and shrinkage movements of reactive clay soils due to moisture changes. (b) Settlement of compressible soils or fill.
(c) Distribution to the foundation of the applied loads. (d) Tolerance of the superstructure to movement.
The Notes to the Figures in Section 3 form part of the mandatory provisions of this Standard. The Figures are intended to show only the structural proportions of the footing system. All other details are purely illustrative. The terms ‘normative’ and ‘informative’ have been used in this Standard to define the application of the appendix to which they apply.
A ‘normative’ appendix is an integral part of a Standard, whereas an ‘informative’ appendix is only for information and guidance. A3 The purpose of Amendment No. 3 to AS 2870—1996 is to bring the Standard into line with the nomenclature now in use in Australia for the specification of reinforcing mesh and bars.
AS/NZS 4671 Steel reinforcing materials was published in April 2001. It describes the proportion of reinforcing mesh and bars now distributed in Australia.
AS/NZS 4671 adopts nomenclature, which is different from that used in previous editions of AS 2870. AS/NZS 4671 has specific relevance to grade 500L mesh and 500N bars, materials which are currently the subject of ongoing research, particularly with regard to the issue of ductility. Standards Australia Committee BD-025 is evaluating the results of this research. The committee may find it appropriate to issue further amendments to this Standard should issues of ductility be found to impact on the performance levels of footings designed in accordance with the Standard.This is a free 7 page sample. Access the full version online. 3 AS 2870—1996 CONTENTS Page SECTION 1 SCOPE AND GENERAL 1.1 SCOPE.
5 1.2 APPLICATION. 5 1.3 PERFORMANCE OF FOOTING SYSTEMS. 5 1.4 DESIGN CONDITIONS. 6 1.5 DEEMED-TO-COMPLY STANDARD DESIGNS. 7 1.6 REFERENCED DOCUMENTS. 7 1.7 DEFINITIONS.
8 1.8 NOTATION. 12 1.9 REINFORCEMENT DESIGNATION. 13 1.10 INFORMATION ON DRAWINGS. 13 SECTION 2 SITE CLASSIFICATION 2.1 GENERAL. 14 2.2 METHODS FOR SITE CLASSIFICATION. 15 2.3 3SITE INVESTIGATION REQUIREMENTS.
18 2.4 ADDITIONAL CONSIDERATIONS FOR SITE CLASSIFICATION. 19 SECTION 3 STANDARD DESIGNS 3.1 SELECTION OF FOOTING SYSTEMS. 21 3.2 PIER-AND-BEAM, PIER-AND-SLAB OR PILE SYSTEMS. 23 3.3 REINFORCEMENT EQUIVALENCES. 34 3.4 SUSPENDED CONCRETE FLOORS IN ONE-STOREY CONSTRUCTION. 34 3.5 FOOTING SYSTEMS FOR TWO-STOREY CONSTRUCTION WITH SUSPENDED CONCRETE FLOOR. 34 3.6 FOOTINGS FOR CONCENTRATED LOADS.
35 SECTION 4 DESIGN BY ENGINEERING PRINCIPLES 4.1 GENERAL. 36 4.2 DESIGN LOADS. 36 4.3 DESIGN OF FOOTING SYSTEMS. 36 4.4 RAFT FOOTING SYSTEMS. 36 4.5 MODIFICATION OF STANDARD RAFT DESIGNS. 38 4.6 DESIGN OF FOOTING SYSTEMS OTHER THAN STIFFENED RAFTS.
38 4.7 FOOTING SYSTEMS FOR REINFORCED SINGLE LEAF MASONRY WALLS. 39 4.8 DESIGN FOR TIMBER PILED FOOTING SYSTEMS. 40 SECTION 5 DETAILING REQUIREMENTS 5.1 GENERAL. 41 5.2 DRAINAGE REQUIREMENTS.
41 5.3 REQUIREMENTS FOR RAFTS AND SLABS. 42 5.4 REQUIREMENTS FOR PAD AND STRIP FOOTINGS. 47 5.5 ADDITIONAL REQUIREMENTS FOR CLASS H AND E SITES. 48 SECTION 6 CONSTRUCTIONREQUIREMENTS 6.1 GENERAL.
As 2870 Residential Slabs And Footings Pdf Creator Windows 10
50 6.2 PERMANENT EXCAVATIONS. 50 6.3 TEMPORARY EXCAVATION. 50 6.4 CONSTRUCTION OF SLABS. 50AS 2870—1996 4 Page 6.5 CONSTRUCTION OF STRIP AND PAD FOOTINGS. 55 6.6 ADDITIONAL REQUIREMENTS FOR CLASS H AND E SITES. 55 APPENDICES A FUNCTIONS OF VARIOUS PARTIES.
56 B PERFORMANCE CRITERIA AND FOUNDATION MAINTENANCE. 57 C CLASSIFICATION OF DAMAGE DUE TO FOUNDATION MOVEMENTS. 60 D SITE CLASSIFICATION BY SOIL PROFILE IDENTIFICATION. 61 E STUMP PAD SIZES, BRACED STUMP UPLIFT HORIZONTAL LOAD CAPACITY.
67 F SOIL PARAMETERS AND FOOTING DESIGN METHODS. 71 G DESIGN OF DRIVEN TIMBER PILED FOOTING SYSTEMS.
75This is a free 7 page sample. Access the full version online.This is a free 7 page sample. Access the full version online. 5 AS 2870—1996 STANDARDS AUSTRALIA Australian Standard Residential slabs and footings—Construction SECTION 1 SCOPE AND GENERAL 1.1 SCOPE This Standard sets out the requirements for the classification of a site and the design and construction of a footing system for a single dwelling house, townhouse or the like which may be detached or separated by a party wall or common wall, but not situated vertically above or below another dwelling. Such houses include buildings classified as Class 1 and 10a under the Building Code of Australia. The Standard may also apply to other forms of construction including some light industrial, commercial and institutional buildings if they are similar to houses in size, loading and superstructure flexibility. The footing systems for which designs are given include slab-on- ground, stiffened rafts, waffle rafts, strip footings, pad footings and piled footings.
This Standard gives no advice on detailing of the connection of superstructures to the footing systems for wind loads or earthquake loads. This Standard shall not be interpreted so as to prevent the use of materials or methods of design not referred to herein. Specifically, this Standard shall not be used to prevent the use of locally proven designs, or alternative designs in accordance with engineering principles. NOTE: This Standard does not include design details for Class P sites. Some advisory material is included in the commentary.
1.2 APPLICATION The Standard requires that all sites shall be classified in accordance with Section 2 and that footing system designs shall be prepared either by prescribing a standard design in accordance with Section 3, or by the engineering principles described in Section 4. In either case, all construction shall comply with Sections 5 and 6. Residential footing system design and construction shall comply with AS 3600 except that, where in conflict, this Standard shall take precedence. NOTE: The functions of the various parties involved in the design and construction of residential slabs and footings are normally as described in Appendix A. 1.3 PERFORMANCE OF FOOTING SYSTEMS A1 1.3.1 General The footing systems complying with this Standard are intended to achieve acceptable probabilities of serviceability and safety of the building during its design life. Building supported by footing systems designed and constructed in accordance with this Standard on a normal site (see Clause 1.3.2) which is— (a) not subject to abnormal moisture conditions; and (b) maintained such that the original site classification remains valid and abnormal moisture conditions do not develop (see Note 1); www.standards.com.au Standards AustraliaThis is a free 7 page sample. Access the full version online.
As 2870 Residential Slabs And Footings Pdf Creator Printable
AS 2870-1996 Residential slabs and footings - Construction The remainder of this document is available for purchase online at www.saiglobal.com/shop SAI Global also carries a wide range of publications from a wide variety of Standards Publishers: Click on the logos to search the database online.