Excerpt from New Book of Instruction and Tables for Use With the Everready Pipe and Elbow Chart: Designed for Sheet Metal and Boiler Workers In this second edition of the Everready Pipe & Elbow Chart the author has endeavored to embody in the booklet a number of tables of weights and other data that is very necessary for every mechanic, foreman, superintendent and estimator to have in as compact a form as possible. A number of these charts, tables, etc., have been taken from books, periodicals and magazines, for which due credit is given. To the mechanic, the booklet furnishes exact dimensions for cutting out patterns for pipes, ducts and elbows; also proper allowances for the small end of pipes, so that they will fit properly. To the foreman, it gives correct angles for mitre lines of all kinds of elbows, and a good short method of cutting elbow patterns. It also gives the weights of round and rectangular ducts and elbows, areas and circumference of pipes, including laps, weights of iron, friction in ducts, the loss of power due to friction, correct radius in elbows, the equalization of pipe diameters, flue and register dimensions, and the carrying capacity of ducts. 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.