BS 5911-1 2021 Concrete pipes and ancillary concrete - Unreinforced and reinforced concrete pipes （including jacking pipes） and fittings with flexible joints （complementary to BS EN 1916 2002）. Specification.pdf

BS5911-1:2021 BSI Standards Publication Concrete pipes and ancillary concrete Part 1:Unreinforced and reinforced concrete pipes (including jacking pipes)and fittings with flexible joints (plementary to BS EN 1916:2002)-Specification bsi. BS5911-1:2021 BRITISH STANDARD Publishing and copyright information The BSI copyright notice displayed in this document indicates when the document was last issued. @The British Standards Institution 2021 Published by BSI Standards Limited 2021 ISBN9780539165531 ICS23.040.50;91.100.30 The following BSI references relate to the work on this document: Committee reference B/505 Draft for ment 21/30412760 DC Amendments/corrigenda issued since publication Date Text affected ©THE BRITISH STANDARDS INSTITUTION 2021-ALL RIGHTS RESERVED BRITISH STANDARD BS5911-1:2021 Contents Page Foreword ii 1 Scope 1 2 Normative references 1 3 Terms and definitions 2 Figure 1-Typical geometric form for an egg-shaped bore 3 4 Symbols 3 Table 1-Symbols 3 5 General requirements 3 5.1 Application 3 5.2 Concrete(4.2)-position 4 5.3 Finish(4.3.2) 4 5.4 Geometrical characteristics (4.3.3) 4 Table 2-Nominal sizes and tolerances of units with a circular bore for use in a trench 5 Table 3-Nominal sizes and tolerances of egg-shaped units 6 Table 4-Nominal sizes internal manufacturing diameter and tolerances of jacking pipes 6 Table 5-Tolerances on the squareness of ends of jacking pipes 7 5.5 Durability of joints (4.3.4.2) 8 5.6 Crushing strength (4.3.5) 8 Table 6-Minimum crushing loads for strength class 120 units with a circular bore for use in a trench 8 Table 7-Minimum crushing loads for strength class 150 egg-shaped units 9 Table 8-Minimum crushing loads for strength class 120 jacking pipes 10 5.7 Resistance to high pressure jetting 10 5.8 Lifting anchorages 10 5.9 Bends(4.3.3.3) 10 6 Special requirements-reinforced concrete units (Concrete cover)(5.2.2) 11 7 Conformity evaluation 11 7.1 Application 11 7.2 Finish 11 7.3 Geometrical characteristics 11 7....