TECHNICAL ISO REPORT TR 11328 First edition 1994-04-15 Measurement of liquid flow in open channels Equipment for the measurement of discharge under ice conditions Mesure de débit des liquides dans les canaux découverts -- Equipement pour le mesurage du débit en présence de glace ISo Reference number ISO/TR11328:1994(E) Copyright Intermational Organization for Standardization Not for Resale ISO/TR11328:1994(E) Contents Page 1 Scope 1 2 References 1 3 Definitions.... 2 4 2 4.1 Equipment for the velocityarea method................ 2 4.2 7 4.3 Discharge determination by notches, weirs and flumes... 8 ISO1994 All rights reserved. No part of this publication may be reproduced or utilized in any form or in writing from the publisher. International Organization for Standardization Case Postale 56·CH-1211Geneve 20·Switzerland Printed in Switzerland No reproduction or networking permited without license from IHS Not for Resale oISO ISO/TR11328:1994(E) Foreword IsO (the International Organization for Standardization) is a worldwide of preparing International Standards is normally carried out through IsO represented on that committee. International organizations, governmental and non-governmental, in liaison with IsO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (lEC) on all matters of electrotechnical standardization. The main task of technical committees is to prepare International Stan- - type 1, when the required support cannot be obtained for the publica- tion of an International Standard, despite repeated efforts; type 2, when the subject is still under technical development or where for any other reason there is the future but not immediate possibility of an agreement on an International Standard; type 3, when a technical committee has collected data of a different kind from that which is normally published as an International Standard ("state of the art", for example). Technical Reports of types 1 and 2 are subject to review within three years of publication, to decide whether they can be transformed into Inter- valid or useful. ISO/TR 11328, which is a Technical Report of type 3, was prepared by Technical Committee IsO/TC 113, Hydrometric determinations, Subcom- mittee sc 5, Flow measuring instruments and equipment. Copyright Intermational Organization for Standardization ited without licensefromHS Not for Resale