Page 7 - Industrial Process Plant Construction Estimating and Man Hour Analysis

Preface xxi

and fee. In addition, the estimator must determine all factors that will affect pro-
ductivity and overtime impacts.
Review of the preface and introduction will enable the reader to understand
craft labor productivity, productivity measurement, collection of historical data,
estimating methods and labor factors, and loss due to labor productivity and
overtime impacts
To apply the scopes of work, direct craft man-hour tables, and estimating
sheets, the reader must be familiar with the following chapters entitled “Intro-
duction and Chapters 1, 11, and 12.” These chapters illustrate, with practical
examples, the steps required to estimate and analyze man-hours to uncover
the relationships that exist for process plant cost and labor:
(1) Introduction will enable the reader to set up cost codes and methods for
collecting, organizing, summarizing, presenting, and analyzing historical
man-hour data using graphic and regression analysis to verify
historical data.
(2) Chapter 1 enables the reader to set up and use Excel templates and spread-
sheets to automate statistical functions to perform mathematical and statis-
tical applications to make the connection to process plant construction.
(3) Chapter 11 provides the reader the “industrial process plant construction
estimating process” to enable the reader to use statistical and estimating
methods, scopes of work, man-hour tables, and estimate sheets to the
following:
(a) Evaluate the accuracy and verify historical data collected for process
piping and equipment installed in industrial process plants
(b) Provide a comprehensive and accurate method using construction sta-
tistics and estimating methods to compile detailed craft man-hour esti-
mates for bid proposals, RFPs, and field change orders
(4) Chapter 12 provides the reader the knowledge to use construction statistics
to forecast, use learning curves and time series to validate data, and prepare
detailed estimates. This chapter includes practical examples of statistical
applications and methods to help the reader understand the importance
of man-hour analysis and estimating with the intention to point out the con-
nection to construction. Construction statistics depends on statistical and
mathematical methods and is an important part of field cost and construc-
tion man-hour analysis. The book will be a source for those engaged in esti-
mating, forecasting, managing, and bidding projects in the industrial
construction industry.