2) When backing rings are completely welded in on one side, add 30% to the man hours of a standard thickness butt weld. In addition the following percentages should be added if applicable: 1) When backing rings are tack welded in on one side, add 10% to the man hours of a standard thickness butt weld.
See respective tables for these man hours.īacking Rings: When backing rings are used, add 25% to the welding man hours to cover extra problems in fit-up. Man hours exclude cutting and beveling of pipe. Man hours include setting, aligning, welding, placement of paddle-type plates, and bolting up of pair of orifice flanges. Includes bibliographical references and index. Estimator's piping man-hour manual / John S. Library of Congress Cataloging-in-Publication Data Page, John S. Originally published by Gulf Publishing Company, Houston, TX. This book, or parts thereof, may not be reproduced in any form without permission of the publisher. in civil engineering from the University of Arkansas and received the Award of Merit from the American Association of Cost Engineers in recogni tion of outstanding service and cost engineering.Įstimator's Piping Man-Hour Manual Fifth EditionĬopyright © 1958, 1967, 1976, 1987, 1999 by ButterworthHeinemann. He has made and assembled numerous types of esti mates including lump-sum, hard-priced, and scope, and has conducted many time and method studies in the field and in fabricating shops.
Page has wide experience in cost and labor estimat ing, having worked for some of the largest construction firms in the world.
Page Conceptual Cost Estimating Manual Cost Estimating Man-Hour Manual for Pipelines and Marine Structures Estimator's Electrical Man-Hour Manual/3rd Edition Estimator's Equipment Installation Man-Hour Manual/3rd Edition Estimator's General Construction Man-Hour Manual/2nd Edition Estimator's Man-Hour Manual on Heating, Air Conditioning, Ventilating, and Plumbing/2nd Edition Estimator's Piping Man-Hour Manual/5th Edition Man-Hour Manuals and Other Books by John S.
0 kommentar(er)
