This manual explains how to handle carpentry that's unique to commercial projects. Chapter 2 explains the principles of good form design and includes tables so you can provide enough wales, braces, ties and shores. Chapter 3 outlines basic timber engineering principles and describes how to select the right lumber grade and species. Chapter 4 explains how to handle roof framing on commercial buildings and emphasizes the work most common on commercial jobs such as roof trusses etc. Chapter 5 tells how to install the wood sheathing, siding, doors and windows commonly used on commercial buildings. Over 160 tables, charts, drawings, and pictures are included to help you understand everything that's explained.