Patent ID: 8561373

Claim:
A high strength bamboo I-beam comprising: a web portion comprising a first bamboo board layer being a plurality of bamboo boards each being a portion of splayed bamboo culm, and each having front and back faces, side edges, top and bottom edges, a length, a width and a thickness wherein the bamboo boards are oriented parallel to one another along the side edges having grain direction alike, and a second bamboo board layer arranged face to face with the first bamboo board layer, a first flange comprising first and second laminated bamboo flange elements each element having a top and a bottom surface and laminations of splayed bamboo culm wherein the web portion is disposed between the first and second laminated bamboo flange elements with the top edge of the web portion flush with the top surface of the first and second laminated bamboo flange elements; and, a second flange comprising third and fourth laminated bamboo flange elements each element having a top and a bottom surface and laminations of splayed bamboo culm wherein the web portion is disposed between the third and fourth laminated bamboo flange elements with the bottom edge of the web portion flush with the bottom surface of the third and fourth laminated bamboo flange elements each being adjacent to the web portion, wherein the laminations of the laminated bamboo flange elements are disposed parallel to the top and bottom surfaces of each flange element thereby positioning the laminations perpendicular to the sides of the adjacent web portion, whereby the assemblage forms an I shaped beam.