Available Technology

Localized Notch Reinforcement for Wooden Beams

Patent Abstract: 
The strength of a wooden beam in a spanning application derives from the fact that the forces experienced by the beam when loaded are primarily oriented along the grain with essentially no cross-grain tension, due to the fact that wood has relatively little strength perpendicular to the grain. This assumes that the beam is supported underneath its ends and that the beam is of essentially uniform cross section without cuts or notches. However, beams may be cut or notched in various places to run utilities or to fit other structural member which usually causes the wood to weaken.
applications 
Inventors: 
Robert J. Ross
Patent Number: 
5,720,143
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