Patent ID: 6701690
Filing Date: 2004-03-09
Classification: E04C

Abstract:
In a wooden beam comprising two elongated chords extending in parallel relationship and at least one joining member extending between the chords, said at least one joining member having opposite ends rigidly connected to the chords to form a unitary structure of I-shape,the improvement wherein each of the chords is made of two pieces of wood having adjacent surfaces that are in contact and extend in parallel relationship with respect to the at least one joining member over the corresponding opposite end thereof, said two pieces of wood also having tongues and grooves positioned close to their adjacent surfaces and sized to match with opposite tongues and grooves made on the corresponding opposite end of said at least one joining member, said pieces of wood being rigidly connected to each other and to said at least one joining member so as to form said unitary structure of I-shape.