A concept for a wood frame construction system suitable for medium-rise buildings and/or buildings with large openings has been developed and patented. The system is composed of prefabricated column modules and continuous beams that can be cut to size at a manufacturing plant. Column modules, a primary feature of the system, have four standardized configurations depending on the configuration of the beams they are supporting. Each column module has at least two full-module-height vertical members spaced apart and diagonally-braced with wood and steel to provide lateral resistance to wind and earthquake forces. The column modules are placed at optimum plan spacings to support large-span continuous beams prefabricated with engineered composite products. A goal of this research was to prove the principle that the modular column assembly as originally patented can carry loads of a magnitude that could be expected in service. It was apparent from load-testing the patented design, however, that many shortcomings exist. In some cases this design could not meet test case load values expected in service, and could not sustain high design load levels for very long without softening. The patented design, in spite of reasonable ductility and good elastic recovery, also lacked the stiffness necessary to resist light horizontal loadings such as daily winds. As a result of many difficulties identified with this patented prototype, a second-generation column module design (with preliminary modeling analysis in hand) is awaiting consideration for construction and testing. The key to the success of this building system lies with the correct design of the column module to render appropriate horizontal racking and vertical load-carrying performance. It is recommended that the results of this research be pursued further to address some of the shortcomings found during the testing of this first patented prototype specimen. This proposed work should include finalizing examination of the racking test data of the original column module design, finalizing the modeling of a second generation prototype that addresses the shortcomings of the original design, and constructing and testing a second-generation prototype design. The aim is to deliver a viable system (with supporting data) to any potential collaborator for commercial considerations. This work should be complete and a final report submitted by 31, August 1997.