SANS 10120-5 HA-1990 Code of practice for use with standardized specifications for civil engineering construction and contract documents Part 5 Contract administration Section HA S.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. Clause 1. SABS 0120 : Part 5 Section HA-1990 Structural steelwork (sundry i tems) PART 5 : CONTRACT ADMINISTRATION SECTION HA CONTENTS Page Number START

4、OF CONSTRUCTION 1 General 1 IMMEDIATELY AFTER THE HANDING OVER OF THE SITE . 1 Drawings . 1 Contract Price Adjustment 1 DURING CONSTRUCTION 1 Methods of Construction 1 General 1 Grouting 1 HD bolt tolerances . 1 Administration . 1 General 1 Grouting . 1 QUALITY CONTROL AND OTHER CONSIDERATIONS . 2 F

5、lrst Revision August 1990 This section of the code supersedes SABS 0120 : Part 5 : Section HA-1984 Approved by the COUNCIL OF THE SOUTH AFRICAN BUREAU OF STANDARDS 1 SABS 0120 : Part 5 Section HA-1990 Stru -tural steelwork (sundry i tern?) SA8S 1200 HA : STRUCTURAL STEELWORK (SUNDRY ITEMS) NOTE: The

6、 clause number(s) 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 HA. START OF CONSTRUCTION GENERAL. For the purposes of this part of the code, contract administration starts with Instructions to the contra

7、ctor to commence work as set out in Subclause 4.1 of the Introduction. IMMEDIATELY AFTER THE HANDING OVER OF THE SITE DRAWINGS. The recommendations of Section HI) should be appl ied. CONTRACT PRICE ADJUSTMENT. The recommendations of Section HI) shoul d be appl i ed. DURING CONSTRUCTION METHODS OF CO

8、NSTRUCTION Geneal. The recommendations given in Section HI) should be applied, where rele- - vanf.70 the construction of small works. Grouting (Subclause 5.3.6) (see also 3.2.2 below and PSHA 2.4 in Subclause 3.2.3 of Secti6ii HA of Part 2 of the code). Su ervi sion to be adequate. The importance of

9、 adequate supervision of grouting S OUT e S resse -F?- Xli the contractor and the engineer since it seldom, if ever, hbppe:s that E$y!ical checks are made to determine the actual contact area achieved. The costs of failure to achieve the required contact area may be exceedingly hlgh. Packin S. Subje

10、ct to the requirements of Subclause 5.3.5 of SABS 1200 HA, packfng p n“ a es shims, etc., may be left under baseplates since, first of all, they are extremely difficult to remove and, secondly, grout specified for most heavy struc- tures 1 S nearly always of an expansive type. Steel wedges should be

11、 removed after grouting has been completed since they can be unsightly and normal ly do not present problems in removal . Moisture content. The moisture content of grout, other than a free-flowing grout, 36iilTcheZ5d as follows: When a sample of the mixed grout Is S ueezed in the together and retain

12、 its shape on release of the hand pressure. 3 palm of the hand, no moisture should be exuded and the sample shoul just bind HD Bolt Tolerances (Subclause 6.1.3(d). The tolerances specified in Sub- - .- cTause6.1.mof SABS 1200 HA should not be exceeded because the pul ling of bolts (or even structure

13、s) into alignment often presents difficulties especially when bolts are of large diameter (32 mm or more) and, as far as the projection of the bolts is concerned, uncased bolts of uneven height are unsightly. ADMINISTRATION General. The recommendations given in Section HI) should be applied, where r

14、e1 e- vanf ,To the admi ni stration of smal l works. Grouting (Subclause 5.3.6) (see also 3.1.2 above and PSHA 2.4 in Subclause 3.2.3 of Sect-iX HA of Part 2 of the code). Requirements to the effect that the grouting operation must ensure the “complete filling of all voids with grout and provide an

15、evenly distributed contact area of at least 80 %“, are in conflict because if all voids are completely filled this imp1 ies 100 % contact with the baseplate whereas contact over at least 80 X of the area is acceptable. Where a document includes a clause in which such conflict occurs, the engineer sh

16、ould issue a correcting order early in the project. Free-f lowi ng grouts are normal l y not compacted. Fi l l i ng of the grout space is achieved by ensuring a hydrostatic head during the grouting operation. 1) Structural steel work. SABS 0120 : Part 5 2 Section HA-1990 Structural steel work (sundry i terns) 4. QUALITY CONTROL AND OTHER CONSIDERATIONS 4.1 Apply the relevant recommendations of SABS 01572) to the c steel work. 2) Qual i ty systems. struction of structural sabs pta