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Chapter 13 - Piping Isometrics

, and . Pipe Drafting and Design (Third Edition), Gulf Professional Publishing, Boston, Third Edition edition, (2012)
DOI: https://doi.org/10.1016/B978-0-12-384700-3.00013-X

Abstract

Publisher Summary The piping isometric is an important drawing that serves several purposes. It is the primary source for material take-off of each pipe configuration in a facility. Material take-off is the process by which each individual component that makes up a pipe configuration is tabulated for purchase or procurement. This means that all piping components (elbows, flanges, nuts, bolts, washers, gaskets, etc.) must be counted so that purchases of those items can be made. The tabulated results are referred to as the bill of materials. Isometrics also serve as fabrication drawings. Once drawn and properly dimensioned, isometrics are provided to fabricators who build each piping configuration. Fabricators will use the completed isometrics to build shop spools. Shop spools are detailed specifically for pipe welders and fitters with precise cut-lengths and weld symbols. After configurations are fabricated, X-rayed, painted, and shipped to the construction site, isometric drawings serve as an aid to the construction and erection of the facility by providing workers with the locations of tie-ins, connections, and routings.

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Piping Isometrics - ScienceDirect

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