By an appropriation of the Oregon Legislature of it becomes possible for the Oregon Agricultural College to build a drill shed, a thing long needed by this institution. Dennis, Hendricks and Tobey, architects of Portland, submitted plans for this drill shed and in designing the truss for this building we...
The objective of this research is to use a three-dimensional (3D) analysis
method to include 'system effects' directly in the design of light-frame roof truss
assemblies. The goal of this study is to develop an improved and practical method to
determine the structural performance of 3D roof truss assemblies used...
Metal-plate-connected (MPC) trusses have traditionally been designed based on a
tributary load distribution and a simplified truss model. This design method ignores the
load-sharing and composite action in MPC roof truss systems, the semi-rigidity of MPC
joints, and joint eccentricity.
The main objective of this study was to provide a...
The objectives of this research were to evaluate the
behavior of actual metal-plate-connected (MPC) tension-splice
and heel wood truss joints under seismic loads from the
Northridge earthquake (tension-splice joints only) and under
loads from a large artificial earthquake (1.0 g's and 0.67
g's maximum horizontal and vertical accelerations,
respectively). A...
The objective of this research was to develop a one-third scale model of full-size
(prototype) metal-plate-connected (MPC) wood truss joints using similitude theory. The
prototype metal connector plates in MPC joints were modeled using thin galvanized sheet
metal and short staples. Truss grade wood material was ripped to one-third scale...
The objective of this research was to evaluate the duration of load factor for
metal-plate-connected (MPC) truss joints subjected to various cyclic loading conditions.
Heel and tension-splice joints from a standard 30-foot span Fink truss constructed from
nominal 2x4 Douglas-fir lumber were tested. A testing frame similar to that developed...
As part of a roof framing system, light-frame wood trusses often require lateral bracing to reduce the effective length for flexural buckling of compression web members. This observational research investigates the design requirements for discrete compression web bracing intended to provide such lateral support. Four simple brace analysis methods based...