TABLE OF CONTENTS | Note | Most costs throughout this book (and this chapter) are from the following sources: (C) ( [9]) ( [15]) ( [21]) ( [22]) ( [23]) ( [43]) ( [44]) ( [52]) ( [55]) |
These references are used throughout the book, although not identified at specific places.
This book has rough cost data throughout. Rough costs are boldface. Subcontractor's overhead and profit, plus tax, are included. Both material (M) and labor (L) are included, usually with a general idea of percentage of each to the total (100%). Because there is room for only one cost per "ele-ment," often an idea of possible variation (higher or lower) of cost is given. Sometimes two numbers are given the first being for residential and the second for commercial. One must use judgment in this regard to come up with a reasonable but rough cost estimate. As costs change, the user will have to revise costs in this book. The easiest way to do this will be to add historical modifiers, published each year, by various sources. The costs in this book are approx. costs at mid-2002. Over the last few years costs have increased about 2% to 3% per year. Be sure to compound when using this rule of thumb. See p. 60 for compounding.
A CONSTRUCTION ITEM IN THE BOOK GIVES THE FOOLOWING:
$5.00/SF (40%M & 60%L) (VARIATION OF +100% & ?20%). THIS MEANS DTHAT AS A GOOD AVERAGE,...
