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 SAS 0120 : Part 2 Section DE-1984 small earth dams PART 2 : PROJECT SPECIFICATION SECTION DE CONTENTS Page Number ESSENTIAL PROJECT SPEClFICATION
4、CLAUSES . 1 ESSENTIAL DATA 1 ADDITIONAL CLAIJSES 1 General . l Normal Projects 2 Tolerance on moisture content 2 Trial embankment . 2 Labour-Based Projects . 2 March 1984 Approved by the COUNCIL OF THE SOUTIl AFRICAN BUREAU OF STANDARDS SABS 0120 : Part 2 Section DE-1984 Small earth dams SABS 1200 D
5、E : SMALL EARTH DAMS NOTE a) Number PSDE clauses in Portion 2 of the project specification in the sequence in which the clauses to which they relate appear in SABS 1200 DE. b) The clause number(s) given at the beginning or after the heading of a clause is/are, unless otherwise stated, the number(s)
6、of the relevant clause(s) of SABS 1200 DE. ESSENTIAL PROJECT SPECIFICATION CLAUSES Set out suitable clauses in Portion 2 of the project specification to provide essential information, as follows: a) (Subclause 3.2.l(b) State the grading boundaries and size limits for the material in each zone. See a
7、lso 2. l (h) (l) below. b) !Subclause 3.2.2(d) State the grading boundaries and size limits for the material in filters. C) (Subclause 3.2.3) State the mass and sizes of rockfill. d) (Subclause 5.2.1.l(b) Give clearing details if the structures to be cleared are too big to be removed by the plant sp
8、ecified in Subclause 5.2.1.l(b) of SABS 1200 DE. (See also Subclauses 1.3.1 and 1.3.2 of Section DE of Part 3 of the code.) ESSENTIAL DATA The availability of certain essential data may affect the prices tendered. Except where such data have been given in the schedule or on the tender drawinqs, set
9、out suitable clauses covering items such as the following in Portion 2 of the project specification: a) (Subclause 5.2.1.3) Where topsoil is not to be dealt with as stated but is to be conserved, set out details of its disposal. b) (Subclause 5.2.1.4) Where clearing the dam basin is to be scheduled,
10、 state the extent of such clearing including reference to suitable drawings, and indicate the stage in the programme when the clearing must be done. C) (Subclauses 5.2.2.2(b) and 5.2.3.2(d) State the precautionary measures reyuired where dispersive soils are present. d) (Subclause 5.2.2.3) Designate
11、 borrow pit areas and, for borrow pits below full supply level of the dam, state the destination of stockpiled topsoil if it is not to be used on the embankment. e) (Subclauses 5.2.2.4 and 8.1.3) Designate disposal areas for surplus and unsuitable material. f) (Subclauses 5.2.3.1 and 6.1) State the
12、allowance to be made for settlement. g) (Subclause 5.2.3.2(c) State what precautionary measures are to be taken if construction of the embankment at different levels as the work progresses, is feasible and is likely to be economical. h) (Subclause 5.2.3.2(d) 1) Specify the required Proctor density f
13、or each zone of the embankment. 2) Where dispersive soils are present, state what precautionary measures are to be taken, in addition to increasing compaction to at least 98 % Proctor density. (See also Subclause 2.1 of Section DE of Part 3 of the code.) i) (subclause 5.2.3.3(c) If so required, spec
14、ify compaction of rip-rap. 5) (Subclause 5.2.3.3(e) If so required, specify compaction of rockfill. k) (Subclauses 5.2.4.4 and 8.3.9) If required, state the details and rates of application of (and schedule) grass seeding and fertilizer. 1) (Subclause 5.2.4.5) If required, state the type of pitching
15、 required. (See also Section DK.) n) (Subclause 5.2.4.6) If required, set out details of gabions. (See also Section DK.) n) (Subclauses 5.2.5.2, 8.3.3, and 8.3.8) Except where preliminary investigations have been sufficiently comprehensive to designate the source of all material for each zone of the
16、 embankment, allocate quantities to particular borrow areas and schedule accordingly. Schedule both short and long haul. O) (Subclause 6.2) Except where given on the drawings, state the expected settlement for which the contractor must provide. p) (Subclauses 7.4 and 8.3.7) If so required, give deta
17、ils of the trial embankment and schedule suitable items. ADDITIONAL CLAUSES GENERAL. Where it is necessary to amplify or otherwise to vary the terms of SABS 1200 DE to render them suitable for use in projects to be carried out in particular locations or under particular circumstances, include in Por
18、tion 2 of the project specification clauses dealing with matters other than those covered by Clauses 1 and 2 above. (See also Subclause 1.3 of Section DE of Part 3 of the code.) SADS 0120 : Part 2 Section DE-1984 Small earth dams 3.2 NORMAL PROJECTS NOTE: To meet requirements imposed by various norm
19、s of economic dove:nprneral, projects arc classifed as normal, prestige, subeconomic, and labour-based projecis see Clause 4 ol Section 0 of Part 3 of the code) . 3.2.1 Folerance on Moisture Content (Subclause 6.2). Where the tolerances rcquired on moisture content are different from those specified
20、, set out the details. 3.2.2 Trial Embankment (Subclause 7.4). See Subclause 1.1.2 of Section DE of Part 3 of the code. 3.3 LABOUR-BASED PROJECTS. Until a suitablc standardized specification has been published, state which clauses of SAHS 1200 DE will not be applicable to the contract, and insert appropriate alternative clauses to cover the requirements in a manner more suited to a labour-based mcihod of construction. (see Subclause 1.3.6 of Section DE of Part 3 af the code.) sabs pta
