Use these blueprint symbols to help you learn and understand how to read your home plan blueprint.Į/blueprints/ blueprints.html Welders that fabricate or work with drawing must be able to interpret the welding symbol to prepare the joint and apply a weld that has the required strength and soundness.ĭ/ welding_symbols.htm Welding symbols are used on blueprints and drawings to show where the weld is to be placed and may also show the size, type of weld, number of welds, details about the weld and even details about the joint.
They are actually white-on-blue reproductions of technical drawings of engineering or architecture designs made using a contact print process on light-sensitive paper, sometimes linen, Mylar or imitation vellum. Blueprints are those rolls of blue paper that construction engineers and architects carry around and pore over at job sites, during technical meetings etc.