本文件规定了明渠水流量的测量方法 使用三角形剖面堰的稳定流动条件。考虑的流动条件为稳定流动 唯一取决于上游水头和非模块化（淹没）流量 在下游和上游水平。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document specifies methods for the measurement of the flow of water in open channels under steady flow conditions using triangular profile weirs. The flow conditions considered are steady flows which are uniquely dependent on the upstream head and non-modular (drowned) flows which depend on downstream as well as upstream levels.All current amendments available at time of purchase are included with the purchase of this document.