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 20-3 Section MFL:l996 Base (light pavement structures) Part 3 : Guidance for design Section MFL Contents Page 1 Pre-tender considerations 1 . 1 1
4、 Investigations and administration 1 . . 1 1 1 Alterations to sewices 1 . 1.2 Documentation 1 1.2.1 General . 1 1.2.2 Subbase not included in design and SABS 1200 ME not in contract document . 1 1.2.3 Tenders l . 2 Designrequirements 1 . 2.1 Detaildesign 1 2.2 Compaction 1 . 3 Relative applicability
5、 of other codes 1 . 4 Testprocedures 1 . 5 Quality control and other considerations 1 Approved by the PRESIDENT OF THE SOUTH AFRICAN BUREAU OF STANDARDS CODE OF PRACTICE SABS 0120-3 : Section MFL:1996 SABS 1200 MFL : Base (light pavement structures) NOTE - The clause number(s) given at the beginning
6、 or after the heading of a clause istare, unless otherwise stated, the number(s) of the relevant clause(s) of SABS 1200 MFL. 1 Pre-tender considerations 1 .l Investigations and administration 1 .l .l Alterations to services Before the design of a road is completed, ensure that provision has been mad
7、e to deal with all aspects of existing and proposed services. (See 5.1.2 of SABS 1200 D) and clause 2 of section A and clause 2 of section D.) 1.2 Documentation 1.2.1 General Insert a suitable clause in portion 2 of the project specification or give information on a drawing or include a suitable ite
8、m in the schedule of quantities (as appropriate) to deal with each matter listed in clauses 1 and 2 of section MFL of SABS 0120-2. 1.2.2 Subbase not included in design and SABS 1200 ME) not in contract document The design of a carriageway might not require an imported subbase where the natural in-si
9、tu material is such that it can be compacted adequately and is of such quality as to meet subbase requirements. When such conditions are encountered, take one of the courses of action recommended in 3.2.6 of section ME of SABS 0120-2. 1.2.3 Tenders Ensure that, before the start of construction, acti
10、on has been taken in the matters set out in 3.1.2(a) and (b) of the Introduction. 2 Design requirements 2.1 Detail design (See TRH 43) and UTG 34) for structural design of road pavements.) 2.1.1 Structural design determinants (3.2 and 3.3) Material for use as base should be selected on the basis of
11、the structural design determinants, such as shear resistance and resilient modulus, which are suitable for the traffic that the pavement is projected to carry during its life. For light pavement structures, the appropriate type of material should be selected using TRH 43) and other relevant document
12、s as a guideline or as designed by a specialist pavement engineer. G4 quality is generally used for light pavement structures; however, for an extremely low incidence of heavy vehicles (e.g. category D roads), lower quality materials might prove to be adequate. 3 Relative applicability of other code
13、s There are no SABS codes of practice that are applicable to base design, but the recommendations of the relevant TRH publications should be taken into account. 4 Test procedures All standardized specifications relating to roads (see annexure A of the Introduction to SABS 0120) are framed for use wi
14、th the methods of test laid down in the TMH publications of the state road authorities. 5 Quality control and other considerations Apply the relevant recommendations of SABS IS0 9000) to the design of a base. 1) Eaflhworks. 2) Subbase. 3) Asphalt pavement design for national roads, published by the Committee of State Road Authorities. 4) Structural design of urban roads, published by the Committee, Urban Transport Authorities. 5) Quality management systems. ISBN 0-626-1 0592-7 1 sabs pta
