SANS 10120-3 MM-1984 Code of practice for use with standardized specifications for civil engineering construction and contract documents Part 3 Guidance for design Section MM Ancil.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 0120 : Part 3 Section MM-1984 Ancillary roadworks PART 3 : GUIDANCE FOR DESIGN SECTION MM CONTENTS Clause Page Number PRE-TENDER CONSIDERATIONS . 1

4、Investigations 1 Administration 1 Documentation 1 Guardrails and posts . 1 . Timber posts to SABS 457 3 Drawings . . Scheduling etro-reflective material . Timber poles for sign supports Fixing details for reflector plates Road signs . Painting of structural steelwork DESIGN REOUIREMENTS . Road Signs

5、 1 Breakaways in Road Sign Supports 1 Retro-reflective Material 1 APPLICABILITY OF OTHER CODES . 1 TEST PROCEDURES . 1 QUALITY CONTROL AND OTHER CONSIDERATIONS . 1 March 1984 Approved by the COUNCIL OF THE SOUTH AFRICAN BUREAU OF STANDARDS SABS 0120 : Part 3 Section MM-1984 Ancillary roadworks SABS

6、1200 MM : ANCILLARY ROADWORKS NOTE: The clause number(s1 given at the beginning or after the heading of a clause is/are, unless otherwise stated, the number(s) of the relevant clause(s) of SABS 1200 MM. PRE-TENDER CONSIDERATIONS INVESTIGATIONS. No particular recommendations. ADMINISTRATION. No parti

7、cular recommendations. WCUMENTATION Guardrails and Posts (Subclauses 3.1.1 and 3.1.2.1). SABS 1350) covers the supply for normal situations, of suitable quantities of bolts, nuts, washers, and other materials to fix the rails to the posts and to assemble a continuous guardrail system. Where addition

8、al jointing material is necessary, schedule it or set out the requirements in the project specification. NO preservative treatment need be specified because SABS 457) gives details of the preservative treat- ment that all posts and spacer blocks must be given in order to bear the SABS mark (see also

9、 1.3.6 below). Timber Posts to SABS 47). Subclause 3.1.2.1 of SABS 1200 MM requires posts to have a top diameter of between 145 mm and 175 mm so as to ensure that standard bolts and nuts can be used for attaching guardrails. Such a requirement assists the contractor to a small extent during construc

10、tion but is of prime importance to local authorities responsible for long term maintenance and urgent replacements. Drawings (Subclauses 3.1.2.2, 3.2.1, 3.3.3, and 8.3.2). Where appropriate (e.g. to ensure that the requirements for details of such items as steel guardrail posts, breakaways, road stu

11、ds, retro-reflective backgrounds, etc., are clear), include suitable drawings in the tender/contract document. In the case of large signs for freeways, give details on drawings. Schedulinq (Subclauses 3.2.1 and 3.2.2). Where a particular breakaway detail or surface treatment is required, ensure that

12、 an item is provided in the schedule to cover the cost of such breakaway or surface treatment. Retro-reflective Material (Subclause 3.2.9). The requirements given in Table 1 and Subclause 3.2.9(b) of SABS l200 MM are requirements for Type I1 sheet reflective materials (encapsulated lens sheeting) gi

13、ven in -79/1979) which is the standard used by the specialist suppliers of such material in South Africa. Timber Poles for Sign Supports (Subclause 3.2.10). Depending on whether poles are to be of pine or eucalyptus, state the number of the applicable SABS standard specification. SABS 73) covers pin

14、e, SABS 754) covers eucalyptus, and both cover preservative treatment. Fixing Details for Reflector Plates (Subclause 5.1.1.1). Ensure that details for the fixing of reflector plates are given on the drawings. 1.3.8 Road Signs (Subclause 5.2.1.2). Do not specify particle board for road signs that ar

15、e larger than 10 mL. 1.3.9 Painting of Structural Steelwork (Subclause 5.2.2.4). Where the quantity of structural steelwork or the exposure conditions or local requirements necessitate a different form or degree of corrosion protection, include in the contract document a specification that covers co

16、rrosion protection if a suitable specification is available. If not, set out a project specification clause based on the data given in Section H. DESIGN REQUIREMENTS ROAD SIGNS. See 1.3.8 above. BREAKAWAYS IN ROAD SIGN SUPPORTS (Subclauses 3.2.1, 5.2.1.1, and 8.3.3). Depending on the details of the

17、construction, provision of breakaway devices for road sign supports may be relatively expensive. Consider the risk of collision with each support, and so design the breakaway devices as to prevent injury to persons and to ensure the minimum of damage to signs and vehicles in the event of such a coll

18、ision. 2.3 RETRO-REFLECTIVE MATERIAL (Subclause 3.2.9). See 1.3.5 above. 3. APPLICABILITY OF OTHER CODES 3.1 There are no SABS codes of practice that are applicable to ancillary roadworks. 4. TEST PROCEDURES. No specific recomendations. 5. QUALITY CONTROL AND OTHER CONSIDERATIONS 5.1 Apply the relev

19、ant recommendations of SABS 0157) to the design of ancillary roadworks. 1) Guardrails for roads (W-section). 2) Wooden poles, droppers, guardrail posts, and spacer blocks. 3) One of the standard specifications for construction of roads and bridges on Federal highway projects, published by the Federa

20、l Highway Administration of the US Department of Transportation. 4) Pine poles and cross-arms for power transmission, low-voltage reticulation, and telephone systems. 5) Eucalyptus poles and cross-arms for power transmission, low-voltage reticulation, and telephone systems. 6) Quality management systems. ISBN 0-626-06906-8 sabs pta