roark's formulas for stress and strain 8th
This book was written for the purpose of making available a compact, adequate
summary of the formulas, facts, and principles pertaining to strength of materials.
It is intended primarily as a reference book and represents an attempt to meet
what is believed to be a present need of the designing engineer.
This need results from the necessity for more accurate methods of stress analysis
imposed by the trend of engineering practice. That trend is toward greater speed and
complexity of machinery, greater size and diversity of structures, and greater economy
and refinement of design. In consequence of such developments, familiar problems, for
which approximate solutions were formerly considered adequate, are now frequently
found to require more precise treatment, and many less familiar problems, once of
academic interest only, have become of great practical importance. The solutions and
data desired are often to be found only in advanced treatises or scattered through an
extensive literature, and the results are not always presented in such form as to be
suited to the requirements of the engineer. To bring together as much of this material
as is likely to prove generally useful and to present it in convenient form have been the