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7135/634/SP 2011-12-20 2012-02-21 SANS 634: …

DRAFT SOUTH AFRICAN STANDARD (DSS): PUBLIC ENQUIRY STAGE. Document number SANS 634. Reference 7135/634/SP . Date of circulation 2011-12-20 Closing date 2012-02-21 . Number and title: SANS 634: geotechnical INVESTIGATIONS FOR TOWNSHIP DEVELOPMENT. Remarks: PLEASE NOTE: The technical committee, SABS SC 59P: Construction standards geotechnical standards responsible for the preparation of this standard has reached consensus that the attached document should become a South African standard. It is now made available by way of public enquiry to all interested and affected parties for public comment, and to the technical committee members for record purposes.

ISBN 978-0-626- SANS 634:2012 Edition 1 SOUTH AFRICAN NATIONAL STANDARD Geotechnical investigations for township development Published by …

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Transcription of 7135/634/SP 2011-12-20 2012-02-21 SANS 634: …

1 DRAFT SOUTH AFRICAN STANDARD (DSS): PUBLIC ENQUIRY STAGE. Document number SANS 634. Reference 7135/634/SP . Date of circulation 2011-12-20 Closing date 2012-02-21 . Number and title: SANS 634: geotechnical INVESTIGATIONS FOR TOWNSHIP DEVELOPMENT. Remarks: PLEASE NOTE: The technical committee, SABS SC 59P: Construction standards geotechnical standards responsible for the preparation of this standard has reached consensus that the attached document should become a South African standard. It is now made available by way of public enquiry to all interested and affected parties for public comment, and to the technical committee members for record purposes.

2 Any comments should be sent by the indicated closing date, either by mail, or by fax, or by e-mail to SABS Standards Division Attention: Compliance and Development department Private Bag X191. Pretoria 0001. Fax No.: (012) 344-1568 (for attention: dsscomments). E-mail: Any comment on the draft must contain in its heading the number of the clause/subclause to which it refers. A comment shall be well motivated and, where applicable, contain the proposed amended text. The public enquiry stage will be repeated if the technical committee agrees to significant technical changes to the document as a result of public comment. Less urgent technical comments will be considered at the time of the next amendment.

3 THIS DOCUMENT IS A DRAFT CIRCULATED FOR PUBLIC COMMENT. IT MAY NOT BE REFERRED TO AS A. SOUTH AFRICAN STANDARD UNTIL PUBLISHED AS SUCH. IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT SOUTH AFRICAN STANDARDS MAY ON OCCASION HAVE TO BE. CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO WHICH REFERENCE MAY BE. MADE IN LAW. 2008/08/08 sabs pta ISBN 978-0-626- SANS 634:2012. Edition 1. SOUTH AFRICAN NATIONAL STANDARD. geotechnical investigations for township development Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001.

4 Tel: +27 12 428 7911 Fax: +27 12 344 1568. SABS. SANS 634:2012. Edition 1. Table of changes Change No. Date Scope Acknowledgement The SABS Standards Division wishes to acknowledge the work of the National Department of Housing, the National Department of Public Works, the South African Civil, Geological and geotechnical Engineering Fraternity, and the National Dolomite Risk Management Working Committee established on instruction of the Cabinet Committee on Governance and Administration in developing this document. Foreword This South African standard was approved by National Committee SABS SC 59P, Construction standards geotechnical standards, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement.

5 This document was published in xxxx 2012. Reference is made in to the relevant national authority . In South Africa, this means the South African National Accreditation System (SANAS). Reference is made in (a) to the "relevant national legislation". In South Afric,a this means the Engineering Profession Act, 2000 (Act No. 46 of 2000). Reference is made in (b) to the "relevant national legislation". In South Africa, this means the Natural Scientific Professions Act, 2003 (Act No. 27 of 2003). A reference is made in to the "relevant national legislation". In South Africa, this means the National Nuclear Regulator Act, 1999 (Act No.)

6 47 of 1999) and the Mine Health and Safety Act, 1996 (Act No. 29 of 1996). Reference is made in to the "relevant national authority". In South Africa, this means the Chief Inspector of Mines. Reference is made in (a)(6), to the "relevant national authority". In South Africa, this means the Chief Inspector of Mines or the Department of Mineral Resources and Department of Energy Affairs. Reference is made in (a)(7), to the "relevant national department". In South Africa, this means the Council for Geoscience, the Department of Land Affairs, the Department of Water Affairs, and the National Home Builders Registration Council. Reference is made in and to the relevant national authority.

7 In South Africa, this means the Government Mining Engineer. Reference is made in (a) to the "relevant national legislation". In South Africa, this means the Housing Consumers Protection Measures Act, 1998 (Act No. 95 of 1998). SANS 634:2012. Edition 1. Contents Page Acknowledgement Foreword 1 Scope .. 3. 2 Normative 3. 3 Definitions .. 4. 4 7. General .. 7. Preliminary 8. Phase 1 detailed investigation .. 11. Phase 2 detailed 16. Bibliography .. 18. 1. SANS 634:2012. Edition 1. This page is intentionally left blank 2. SANS 634:2012. Edition 1. geotechnical investigations for township development 1 Scope This standard establishes requirements applicable to a preliminary and two-phase detailed geotechnical site investigation on land including dolomite land, where unoccupied land or undeveloped parcels of land are to be utilized for township development purposes.

8 NOTE 1 The geotechnical site investigations described in this standard are suitable for housing schemes or developments involving a number of housing units. This standard might require some adaptation to make it appropriate for geotechnical site investigations relating to a single house or very small parcels of land or other types of development. NOTE 2 This standard may be used to form the basis of the scope of work for services rendered by an investigator to a client for all or any of the phases that are provided for. 2 Normative references The following referenced documents are indispensable for the application of this document.

9 For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. Information on currently valid national and international standards can be obtained from the SABS Standards Division. SANS 633, Soil profiling and rotary percussion borehole logging on dolomite land in Southern Africa for engineering purposes. SANS 1921-5, Construction and management requirements for works contracts Part 5: Earthworks activities which are to be performed by hand. SANS 1936-1:2012, Development of dolomite land Part 1: General principles and requirements. SANS 1936-2, Development of dolomite land Part 2: geotechnical investigations and determinations.

10 SANS 1936-3, Development of dolomite land Part 3: Design and construction of buildings, structures and infrastructure. SANS 1936-4, Development of dolomite land Part 4: Risk management. SANS 10400-H, The application of the National Building Regulations Part H: Foundations. 3. SANS 634:2012. Edition 1. 3 Definitions acceptable acceptable to the authority administering this standard, or to the parties concluding the purchase contract, as relevant accredited testing laboratory laboratory that has been accredited by the relevant national authority (see foreword). Atterberg limit transition points between various states of soil consistency, namely the liquid limit, plastic limit and shrinkage limit client individual or organization that commissions the geotechnical site investigation collapsible soil soil with a high void ratio and with a low density that, when subjected to a combination of direct actions and an increase in soil moisture content, experiences sudden or rapid settlement competent person person who a) is registered in terms of the relevant national legislation (see foreword)


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