If you could understand this, then I believe it should be no problem for you to understand Iso drawings for any other applications.Īs the technology evolved, I think it will be minimum or even zero possibilities that the North arrow, coordinates and elevation in Iso would differ from piping arrangement hence the dimensions and material take-off (MTO) should be tally too IF the source of 3D model is the same. *NOTE: In this article, I will talk about Iso extracted from PDMS 3D software that commonly used for Topside platform. The actual sizes will be notified in BOM, tagging, call-out or notes. Pipes will be drawn with single line regardless the sizes, as well as the other configurations such as reducers, flanges and valves they are all shown in the same size. Though it is not a scale drawing, it is proportional with exact dimensions given.

It is 2D drawings that represent the 3D piping system. Iso drawings is a pictorial representation combining height-width-depth/length into single view with 30 degree from its horizontal plane (refer image below). We will talk about Stress Analysis wayyyy later. Other than used for construction, Iso drawings also will be used to mark up any deviation on site and also as reference for Pipe Stress analysis model build up. This is where Isometric Drawings (later will be called Iso) play its part.

Now in this article, lets talk about piping drawings that we are going to send out for fabrication the Isometric Drawings.Īfter the 3D model has been established, how do we convey the information to the yard for fabrication? The information given has to be sufficient with the visual of where and what is the piping system to be fabricated, how the piping should be connected, with dimensions and complete of build of materials (BOM). If you missed any articles before, you may refer to Piping Material Components here and Piping & Instrumentations Diagram here or at the link given below. RheaĪrticle number 003! For clarity of explanation, I found another book to be used as main source of this article (only on this topic). Raswari (Penerbit Universitas Indonesia, 2007) Teknologi dan Perencanaan Sistem Perpipaan by Ir.

Isometric pipe design