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    SANS 10120-5 M-1996 Code of practice for use with standardized specifications for civil engineering construction and contract documents Part 5 Contract administration Section M Roa.pdf

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    SANS 10120-5 M-1996 Code of practice for use with standardized specifications for civil engineering construction and contract documents Part 5 Contract administration Section M Roa.pdf

    1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

    2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

    3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. SABS 01 20-5 Section M:l996 Roads (general) Part 5 : Contract administration Section M Contents Page 1 Action immediately after award of contract . . . .

    4、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2 Considerations during construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . l 2.1 Deta

    5、ilsofinethods . 1 2.2 Contract administration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . 1 2.2.1 Testing . 1 2.2.2 Sand . 1 2.2.3 Additionoffines . 1 2.2.4 Size, crushed materials . . . . . . . . . . . . .

    6、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.2.5 Gradingrnodulus 1 3 Quality control and other considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    7、. . . . 1 First Revision 24 June 1996. This section of the code supersedes SABS 01 20-5 : Section M:1981 Approved by the PRESIDENT OF THE SOUTH AFRICAN BUREAU OF STANDARDS ISBN 0-626-1 0587-0 CODE OF PRACTICE SABS 0120-5 : Section M:1996 SABS 0120 Roads (general) NOTE - The clause number(s) given at

    8、 the beginning or after the heading of a clause isfare, unless otherwise stated, the number(s) of the relevant clause(s) of SABS 1200 M. 1 Action immediately after award of contract (See the sections of this part of the code covering the standardized specifications that form part of the contract.) 2

    9、 Considerations during construction (See the sections of this part of the code covering the standardized specifications that form part of the contract, and see also 2.2 below.) 2.1 Details of methods Action should be taken to give effect to the objectives set out in 2.2.1 below. 2.2 Contract adminis

    10、tratioh 2.2.1 Testing (clause 7) The purpose of testing in terms of clause 7 of each standardized specification relating to roads is to ensure that the quality of the whole of the finished road is adequate for the purpose for which it was designed, by verifying that the various components comply wit

    11、h the engineers specifications. In order to achieve this purpose, a) the contractor is required to carry out sufficient random checks to satisfy himself that the materials he has supplied and the workmanship he has produced in respect of each layer of the road comply with the specifications, and b)

    12、when advised by the contractor that the whole of each layer does so comply, the engineer is obliged to verify compliance by means of random checks. Clearly each party should select the apparently weakest points for random checks. (See also 3.9 of section D).) 2.2.2 Sand Where the specified degree of

    13、 relative compaction is not being achieved on site, the percentage passing the 0,075 mm sieve should be determined and trial sections should be done to establish the relative compaction that is achievable (see 1 .l .6 of section M of SABS 0120-3). 2.2.3 Addition of fines (3.3.3) While the addition o

    14、f fines may be permitted to improve grading or plasticity (or both), this action should not adversely affect the materials strength, load-bearing characteristics or compliance with any of the other specified properties. Screening out of plastic fines and their replacement with suitable fines may be

    15、considered. 2.2.4 Size, crushed materials (3.3.3) The maximum particle size specified for crushed material has a significant effect on the crushing plant required. A single-stage crusher generally only removes oversize down to 75 mm and allows no control of grading. For smaller maximum sizes and gra

    16、ding control, the use of a two-stage crusher or screening (or both) becomes necessary. For the production of G1 and G2 material, a sophisticated multi-stage crusher and screening process is usually required. 2.2.5 Grading modulus (3.3.3, table 38) The upper limits for grading moduli have been set at

    17、 a level where good performance can be expected. Some relaxation of these values may be possible, provided that reasonable uniformity and satisfactory relative compaction are achieved. 3 Quality control and other considerations (See the sections of this part of the code relating to the standardized specifications that form part of the contract.) 1) Earthworks. 1 sabs pta


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