Page J.S. Estimators Piping Man-Hour Manual

5th. ed. — Gulf Professional Publishing, 1999. — 248 c. — ISBN: 0-88415-259-6Updated with the addition of 26 new tables on pneumatic mechanical instrumentation, this fifth edition is written for the majority of estimators who have not had the advantages of years of experience and/or of being associated with a firm that spends thousands of dollars for time studies and research analyses. I believe that the book will decrease the chance of errors and help the partially experienced estimator to determine more accurately the actual direct labor cost for the complete fabrication and installation of process piping for a given industrial or chemical plant.
This book is strictly for estimating direct labor in man hours only. You will not find any costs for materials, equipment usage, warehousing and storing, fabricating, shop setup, or overhead. These costs can be readily obtained by a good estimator who can visualize and consider job schedule, size, and location. If a material take-off is available, this cost can be obtained from vendors who will furnish the materials. These items must be considered for each individual job. The following direct man hours (or in the case of alloy and nonferrous materials, the percentages) were determined by gathering hundreds of time and method studies coupled with actual cost of various operations, both in the shop and field on many piping jobs located throughout the country, ranging in cost from $1,000,000 to $5,000,
000. By carefully analyzing these many reports, I established an average productivity rate of 70%. The man hours or percentages compiled throughout this manual are based on this percentage.