ISO 1438-1:1980

Water flow measurement in open channels using weirs and Venturi flumes -- Part 1: Thin-plate weirs

Specifies methods for the measurement of water flow in open channels using rectangular and triangular-notch (V-notch) thin-plate weirs. The flow conditions considered are limited to steady, free and fully ventilated discharge. Recommended discharge coefficients are applicable to water only in the approximate range of temperatures from 5 to 30 °C.


General information

  • Status :  Withdrawn
    Publication date : 1980-04
  • Edition : 1
  • :
    ISO/TC 113/SC 2
    Flow measurement structures
  • 17.120.20
    Flow in open channels

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

Keep up to date with ISO

Sign up to our newsletter for the latest news, views and product information

Subscribe