fedm Posted December 4, 2015 Posted December 4, 2015 (edited) I have been a detailer for only a year. I am having trouble understanding pipe detailing and figuring the centerline radius for pipe bends. A large portion of the piping is burned and rolled. The business I work for is a plate steel fabrication shop. I attached an example of what I am given to detail from. I've read that the centerline radius is typically 1.5 times the diameter. I have found that this is not always true. The second example is like that. The centerline radius turned out to be 48". I was told this. Nobody is willing to show me how to come to these conclusions though. With the first example I was told to provide a centerline radius and how many gores are needed to fabricate the piece. Apparently there should be a center gore and two straight pieces at either end. Why cant it be two mitered pieces? Is it personal preference? How am I supposed to know this?! No one wants to give me straight clear answers. It seems that I am just supposed to know all this stuff. I've read all that I can find on piping, and I am stumped. I need help with this. I want to be a better employee but it is just darn hard to get anywhere. I am willing to read more but I am mentally exhausted, frustrated, and just don't know where else to look. centerline radius.docx centerline radius1.pdf centerline radius2.pdf Edited December 7, 2015 by fedm Quote
RobDraw Posted December 4, 2015 Posted December 4, 2015 Sorry about your frustration. I'm not downloading and opening a word doc for security reasons. Could you upload a PDF of it? It sounds like these pieces are made in house. There has to be shop specifications for them. These specs vary depending on material and use. If they are not available, something is wrong. Find out where they are, start studying, and make cheat sheets. Quote
stevsmith Posted December 5, 2015 Posted December 5, 2015 Id say the same as Rob. Namely, 'Tools of the trade' can play a big role, as we use several pipe former's all with differing bend radii when suppliing us pipe work. I'd also recommend this book as a point of reference, especially for creating lobster back bends and pipe forms. (Remember the link is for Amazon UK) http://www.amazon.co.uk/Manual-Engineering-Drawing-Specification-Documentation/dp/0080966527/ref=sr_1_1?ie=UTF8&qid=1449321678&sr=8-1&keywords=technical+drawing+books Quote
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