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 3 Section MK-1983 Kerbj ng and chanlelling PART 3 : GUIDANCE FOR DESIGN SECTION MK CONTENTS PHE-TENDER CONSIDERATIONS Investigati
4、ons . Aclministration . Documentation Expansion joints in kerbs Bedding material . Tests on in-situ extruded concrete kerbs . DESIGN REQUIREMENTS Extruded Concrete Grade Design of Stormwater Inlets APPLICABIIJTY OF OTHER CODES . TEST PROCEDURES General . QUALITY CONTIIOL AND OII1EH CONSTDEPATICINS 9
5、 November 1983 Approved by the COUNCIL OF TIlE SOUTH AFRICAN EUREAU OF STANDAWS Page Number SAHS 0120 : Part 3 Section MK-1983 Kerbing and channelling SABS 1200 MK : KERBING AND CHANNELLINE NOTE: The clause number(s) given at the beginning or after the hcading of a clause is/are, unless otherwise st
6、ated, the number(s) of the relevant clause(s) of SABS 1200 MK. 1. PRE-TENDER CONSIDERtlTIONS 1.1 INVESTIGATIONS. No specific recommendations. 1.2 ADMINISTRATION. No specific recommendations. 1.3.1 Expansion Joints i.n Ye* (Subclauses 3.5 and 5.2) a) Materials. Consider using for expansion joints a p
7、olyurethane-based compound or a bituminous non-slumping joint filler, provided that the material complies with BS 249g1). h) Frequency of joints. Opinions differ between local authorities as to whether expansion joints or gaps should be placed at 6 m or 20 m centres. In practice, gaps become filled
8、with solid material and become ineffective, and expansion joints remain operative only for as long as the jointing material remains flexible. It appears that gaps or, preferably, joints at 20 m centres are adequate except where a long length of kerbi.ng butts against an immovable but vulncrahle stru
9、cture at one end, in which case joints at 6 m centres are warranted. 1.3.2 Heddlng Material (Subclause 3.9 and 5.2). Any requlrelnent that precast kcrbinq be l-icddcd on concrete (see Subclause 2.1 of Section MK of Part 2 of the code) negates one of the advanLages of the use of precast concrete prod
10、ucts. To obtain correct alignment the kerb layer must place under the kerbing as a bedding material a thin layer of one of the materials specified in Subclause 3.9 of SAnS l200 MK. Concrete as a backing material is useful in certain circwnstdnces. 3.3 Ets on In-Situ Extruded Concrete Kerbs (Subclaus
11、e 7.2.2.2). Problems have been experienced in obtajning a strength of 25 MPa in concrete as laid (not cubes) in extruded kerbs. Consider including a requirement for a) the taking -. and testing of cores from kerbing as a standard method of testing (An adaptation of SABS Method 65) to enable samples
12、to be taken from units of thickness 125 mm may bc nccessary for this purpose); or b) the construction of special trial sections for testiny. DESIGN REQUIREMENTS EXTRUDED CONCRETE GRADE (Subclause 3.7). For the reasons set out in Subclause 3.1.1 ot Section MK of Part 5 of the code, do not dcsiyn an e
13、xtruded kerb to be made of concrete of strength appreciably higher than 25 MPa. DESIGN OF STORMWATER INLETS. See CSIR Report MEC 4333) for details of stormwater inlet design. APPLICABILITY OF OTHER CODES The requirements of SABS 0100 are generally applicable. TEST PROCEDURES The requirements of Clau
14、se 7 of SABS 1200 MK are applicable. QUALITY CONTROL AND OTHER CONSIDERATIONS Apply the relevant recommendations of SABS 0157) to the design of kerbs and channels. 1) Hot applied joint sealants frr concrete pavements. 2) The drilling, preparation, and testing of concrete cores. 3) -water inlet design by J A Swanborn, published by the CSIR, Pretoria, April 1966. 4) Quality management systems. sabs pta
