Special tests
Spike pulling test
Packing boxes
Vehicle and implement woods
Cross-arms
Other tests

APPENDIX

Sample working plan of United States Forest
Service
Strength values for structural timbers

BIBLIOGRAPHY

Part I: Some general works on mechanics, materials of
construction, and testing of materials
Part II: Publications and articles on the mechanical
properties of wood, and timber testing
Part III: Publications of the United States Government on
the mechanical properties of wood, and timber
testing

ILLUSTRATIONS

Frontispiece Photomicrograph of a small block of western
hemlock
1. Stress-strain diagrams of two longleaf pine beams
2. Compression across the grain
3. Side view of failures in compression across the