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. Clause SABS 0120 : Part 2 Section DA-1982 Earthworks (small works) (As amended 1988) PART 2 : PROJECT SPECIFICATION SECTION DA CONTENTS ESSENTIAL PROJECT
4、 SPECIFICATION CLAUSES ESSENTIAL DATA . ADDITIONAL CLAUSES . General Normal Projects Safeguarding . Protection of structures . Clauses selected from Section D Clauses selected from SABS 1200 D Documentation and design requirements Labour-Based Projects First Revision March 1982 Reprint 1988 Incorpor
5、ating Amendment No. 1: 8 June 1988 This section of the code supersedes SABS 0120 : Part 2 : Section DA-1979 Approved by the COUNCIL OF THE SOUTH AFRICAN BUREAU OF STANDARDS Page Number ISBN 0-626-08065-7 SABS 0120 : Part 2 Section DA-1982 Earthworks (small works) Amendment No. 1 : 8 June 1988 SABS 1
6、200 DA : EARTHWORKS (SMALL WORKS) NOTE a) Number PSDA clauses in Portion 2 of the project specification in the sequence in which the clauses to which they relate appear in SABS 1200 DA. b) The clause number(s) given at the beginning or after the heading of a clause is/are, unless otherwise stated, t
7、he number(s) of the relevant clause(s) of SABS 1200 DA. ESSENTIAL PROJECT SPECIFICATION CLAUSES Set out suitable clauses in Portion 2 of the project specification ta provide essential information as follows: a) (Subclause 8.3.5) Warn the contractor of the existence of services if their presence is n
8、ot self-evident. b) (Subclause 3.2.1) Specify the density of compaction required for embankments if avoidance of the settlement specified in 3.2.1 of SABS 1200 DA is not sufficient. ESSENTIAL DATA The availability of certain essential data may affect the prices tendered. Except where such data have
9、been given in the schedule or in the tender drawings, set out suitable clauses covering items such as the following in Portion 2 of the project specification: a) (Subclause 5.1.3) Provide clear drawings showing location of all manholes, valve boxes and the like. b) (Subclauses 5.1.6 and 5.2.1) Desig
10、nate sites for disposal/depositing of material. c) (Subclause 5.2.2) If so required, state that the contractor is to excavate to provide working space for forms for concrete. d) (Subclause 5.2.2) Designate the location of borrow pits, if any, and schedule them. e) (Subclause 5.2.2) Where permanent c
11、oncrete is to be placed against a trimmed excavation surface, describe the nature of or state the tolerance for acceptable projections into the excavation profile. f) (Subclause 5.2.5.2) Specify the final thickness of topsoil if it is to be other than 75 mm . g) (Subclauses 5.2.5.3 and 5.2.5.4) Sche
12、dule and specify the type and give details of vegetation, or pitching, if any, that is required. h) (Subclause 5.2.6.1) Clearly indicate the limits and quantities of the appli- cable operation so that all haulage will be freehaul, or state for which of the operations overhaul will apply and give the
13、 relevant freehaul distance(s) for such operations. i) (Subclause 6.1) Give the degree of accuracy if it is to be other than Degree 111. j) (Subclause 8.3.4) Designate the sources of imported materials. ADDITIONAL CLAUSES GENERAL. Where it is necessary to amplify or otherwise to vary the terms of SA
14、BS 1200 DA to render them suitable for use in projects to be carried out in par- ticular locations or under particular circumstances, include in Portion 2 of the project specification clauses dealing with matters other than those covered by Clauses 1 and 2. (See also Subclause 1.3 of Section A of Pa
15、rt 3 of the code.) NORMAL PROJECTS NOTE: To meet requirements imposed by various norms of economic development, pro- jects are classified as normal, prestige, sub-economic, and labour-based projects (see Clause 4 of the Introduction to Part 3 of the code). I Safeguardin . In situations where the eng
16、ineers pre-tender investigations make it clear that fdditional lateral support will be necessary, state the problem and define the locality. Schedule such support separately and include a clause such as the following: PSDA 1.1 Additional lateral support (Subclause 5.1.1.2). The Contractor shall prov
17、ide additional lateral support between and , for the existing sewer. SABS 0120 : Part 2 Section DA-1982 Earthworks (small works) Amendment No. 1 : 8 June 1988 The sum tendered for item No. in the schedule shall cover the cost of providing, installing, maintaining, and removing lateral support that i
18、s ade- quate for preserving the stabitity of the existing sewer. PSDA 7.2 Dealing with saturated conditions (Subclause 5.1.4). The Contractor shall provide catchwater drains in and around the major excavations to control surface water. Such drains shall be self-draining or, alternatively, shall lead
19、 to sumps equipped with pumps of adequate capacity. Protection of Structures (Subclause 5.1.2). Where it is expected that an excavation may endanger an existing structure, set out the requirements in a clause such as the following: PSDA 2.1 Construction precautions in respect of existing tank (Subcl
20、ause 5.1.2). The Contractors attention is drawn to his responsibility, in terms of Subclause 5.1.2 of SABS 1200 DA, for shoring the existing tank before work commences in the vicinity and for reshoring, as necessary, during the towering of the ground level for the foundations of the new structure. S
21、ections Selected from Section D. From the PSD clauses given in Subclauses 3.2.3-3.2.5 of Section D, select those that are appropriate for use as PSDA clauses. Clauses Selected from SABS 1200 1). From SABS 1200 D) select appropriate clauses for use as PSDA clauses to deal with circumstances that are
22、not covered by SABS 1200 DA, for example: Existing services (see Subclauses 5.1.2 and 8.3.8 of SABS 1200 1). Documentation and Design Requirements. Compile project specification clauses and schedule items, where applicable, in accordance with the recommendations of Subclause 1.3 and Clause 2 of Sect
23、ion D of Part 3 of the code. LABOUR-BASED PROJECTS. Use SABS 1200 DA for such projects. Set out in the project specification clauses to supersede the following clauses of SABS 1200 DA in a manner more suited to a labour-based project: Classes of excavation Areas subject to road loads Excavation plant ,2 Safeguarding of excavations Compaction Transport for earthworks Tolerances Testing Measurement and payment sabs pta ISBN 0-626-08065-7
