This document is the Indian Standard (IS 1200 Part 1) from 1992 on methods of measuring earthwork in building and civil engineering projects. It provides definitions and rules for classifying and measuring different types of excavated materials including soft soil, hard soil, mud, soft rock, and hard rock. It also specifies what should and should not be measured separately, such as dewatering, and how dimensions, areas, and volumes should be recorded accurately to two decimal places. The standard aims to promote uniform measurement practices across different agencies and departments for earthworks.