ISO 14139:2000

ISO 14139:2000

June 2000
International standard Current

Hydrometric determinations - Flow measurements in open channels using structures - Compound gauging structures

This International Standard specifies the methods of measurement of flow in rivers and artificial channels, usingany combination of standard weirs and/or flumes in a compound structure. For guidance on the selection of weirsand/or flumes, refer to ISO 8368. All structures can be operated in the modular flow range, but only a limitednumber of structures can be used in the drowned (non-modular) flow range (see clause 4). Compound weirsimprove the quality of discharge measurements at low stages.The characteristics of velocity distribution are described annex A.Structures standardized for operation in the drowned (non-modular) flow range and the method of computation offlow are described in annex B.Methods and examples of flow measurement calculations are given in annex C.Compound flow-measuring structures without divide piers need in situ or model calibrations and are not covered bythis International Standard.

View the extract
Main informations

Collections

International ISO standards

Publication date

June 2000

Number of pages

41 p.

Reference

ISO 14139:2000

ICS Codes

17.220.20   Measurement of electrical and magnetic quantities

Print number

1 - 03/08/2000
Sumary
Hydrometric determinations - Flow measurements in open channels using structures - Compound gauging structures

This International Standard specifies the methods of measurement of flow in rivers and artificial channels, using

any combination of standard weirs and/or flumes in a compound structure. For guidance on the selection of weirs

and/or flumes, refer to ISO 8368. All structures can be operated in the modular flow range, but only a limited

number of structures can be used in the drowned (non-modular) flow range (see clause 4). Compound weirs

improve the quality of discharge measurements at low stages.

The characteristics of velocity distribution are described annex A.

Structures standardized for operation in the drowned (non-modular) flow range and the method of computation of

flow are described in annex B.

Methods and examples of flow measurement calculations are given in annex C.

Compound flow-measuring structures without divide piers need in situ or model calibrations and are not covered by

this International Standard.

ZOOM ON ... the Requirements department
To comply with a standard, you need to quickly understand its issues in order to determine its impact on your activity.

The Requirements department helps you quickly locate within the normative text:
- mandatory clauses to satisfy,
- non-essential but useful clauses to know, such as permissions and recommendations.

The identification of these types of clauses is based on the document “ISO / IEC Directives, Part 2 - Principles and rules of structure and drafting of ISO documents ”as well as on a constantly enriched list of verbal forms.

With Requirements, quickly access the main part of the normative text!

With Requirements, quickly access the main part of the normative text!
Need to identify, monitor and decipher standards?

COBAZ is the simple and effective solution to meet the normative needs related to your activity, in France and abroad.

Available by subscription, CObaz is THE modular solution to compose according to your needs today and tomorrow. Quickly discover CObaz!

Request your free, no-obligation live demo

I discover COBAZ