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General Dowel Equations for Calculating
Lateral Connection Values:Technical Report 12
Introduction
The yield limit equations specified in the National
Design Specification® (NDS®) for Wood Construction (AF&PA,
1997) for bolt, lag screw, wood screw, nail, spike and drift pin connections
represent a mechanics-based approach for connection design. This approach,
which was incorporated in the NDS for Wood Construction in 1991, permits
the designer to determine effects of member thickness, member strength,
fastener size, and fastener strength on lateral connection values for the
majority of connections found in wood construction. This report covers
calculation of lateral values for single dowel type fastener connections
using a generalized and expanded form of the NDS yield limit equations.
These general dowel equations apply to NDS connection conditions, but also
permit rational and consistent treatment of gaps and fastener moment resistance,
and consideration of various connection limit states. General information
is provided in Part I of this report. Part II contains example problems
and Part III provides equation derivations.
TR12 is now available online
and can be downloaded for free. 24 pages (413 KB).
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