ISO INTERNATIONAL STANDARD 28842 First edition 2013-06-15 Guidelines for the simplified design of reinforced concrete bridges Lignes directrices pour la conception simplifiee des ponts en beton arme Reference number ISO 28842:2013(E) ISO2013 ISO 28842:2013(E) COPYRIGHT PROTECTEDDOCUMENT @ISO2013 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IsO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 . CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISO 2013-All riahts reserved ISO 28842:2013(E) Contents Page Foreword. Introduction 1 Scope.. 2 Normative references. 3 Terms and definitions. 4 Symbols and abbreviated terms... 5 5.1 Procedure... .18 5.2 Design documentation... 20 6 General Guides. 6.1 Limitations ...... .20 6.2 Limit states.... 6.3 Ultimate limit state design format.. .25 6.4 Serviceabilitylimit state designformat.. 26 Structural systems and layout. 26 7.1 7.2 General program... .27 7.3 Structural layout.. 28 7.4 Feasibility under the guidelines...... 29 8 Actions (Loads) 30 8.1 General ... 8.2 Dead loads .30 8.3 Live loads 31 8.4 Longitudinal forces 33 8.5 Earth pressure 33 8.6 Wind loads 34 8.7 Earthquakeinertialforces 34 8.8 Thermal Forces...... 8.9 Loadcombinations. .46 9 Design requirements. ..46 9.1 Scope.. 46 9.2 9.3 Materials for structural concrete . .47 9.4 Concrete Mixture Proportioning .. 48 9.5 Development length, lap splicing and anchorage of reinforcement.. 57 9.6 Limits for longitudinal reinforcement.... 9.7 Minimumamountsoftransversereinforcement .62 10 Superstructure.. .66 10.1 Strength of members subjected to flexural moments .. 66 10.2 Strength of members subjected to shear stresses... 72 10.3 Decks..... 10.4 Solid slabs supported on girders, beams, or joists. ..83 10.5 Girders, beams and joists .103 10.6 Railings.... 11 Substructure .120 11.1 Girders that are part of a frame.. ...120 ahtsreserved ili ISO 28842:2013(E) 11.2 Strength of members subjected to axial loads with or without flexure ..128 11.3 Torsion...... ..132 11.4 Bearing strength. .133 11.5 Columns and Piers .133 11.6 Concrete walls ..142 12 Foundations ... 12.1 Foundation type and capacity ..150 12.2 Subsurface exploration and testing programs.. ..151 12.3 Dimensioning of the foundation elements.. .151 12.4 Footings.... 12.5 Foundation mats.. .153 12.6 Footings on piles.. .153 12.7 Foundation beams 12.8 Retaining Walls. ..154 13 Lateral load resisting system ..163 13.1 General.. .163 13.2 Specifiedlateralforces .164 13.3 Lateralforceresistingstructuralsystem..... 13.4 Minimum amount of structural concrete walls... ..164 13.5 Special reinforcement details for seismic zones .... ..165 14 Bearings. .176 14.1 .176 14.2 Multiple roller bearings 14.3 Elastomeric bearings ... .177 14.4 Anchorage.... 179 14.5 Design forces for supporting structure. ..179 Annex A (normative) Equivalent equations for material factors Annex B (normative) Beam Deflection. Bibliography @ ISO 2013 - All riahts reserved ISO 28842:2013(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through IsO technical committees. Each member body interested in a subject for which a technical committee has been non-governmental, in liaison with isO, also take part in the work. isO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. IsO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directives Attention is drawn to th