Excerpt from Laying Out for Boiler Makers and Sheet Metal Workers: A Practical Treatise on the Layout of Boilers, Stacks, Tanks, Pipes, Elbows, and Miscellaneous Sheet Metal Work This book has been compiled for the purpose of giving the practical boilermaker the information necessary to enable him-to lay out in detail different types of boilers, tanks, stacks and irregular sheet metalwork. While the work of laying out, as it is carried on in the boiler shop, requires considerable technical knowledge'in addition to that gained by a practical mechanic in the course of his experience in the shop, yet a complete mastery of such subjects as geometry, mechanics and similar branches of elementary mathematics. Is not essential for doing the work. For this reason no attempt has been made to present these subjects separately from a theo retical standpoint. The practical application of certain of the principles involved in these subjects is, however, very important, and this has been explained in a practical way in connection with different jobs of laying out which form a part of the every-daywork in everv boiler shop. Only those lay-fl outs which are of'immediate material use to boilermakers are described, and as far as possible the minor details are given so as to make each problem complete. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.