The impact of diaphragm action on the design of a modern post-frame building is also introduced in this edition. Sections that have been extensively updated and expanded include wood preservative treatment, structural lumber grades, site drainage and planning, post foundation design, frost action, truss and roof bracing, wood fasteners, structural loading, construction safety, and bulk storage of commodities. Throughout the book, examples are used to illustrate important design procedures and equations. Detailed maps present newly revised snow loads, wind loads, and extreme frost depths across the continental United States. A revised appendix includes a handy list of unit conversion factors, a table summarizing sectional properties of standard dressed sawn lumber, and a construction checklist.
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