Patent ID: 7293394

Claim:
A support device for a buckling opposing support of a web portion between a top chord and a bottom chord of an I-joist, said support device comprising: a. at least two bridging structures each separately defining a buckling opposing interface with said web portion and across a web height of said web portion in an assembled position in which said bridging structure is attached to said web portion; b. a spacing structure for combining and holding said bridging structures; wherein said I-joist is made from a material selected from a group consisting of wood and wood like materials; and wherein at least one of said bridging structures provides at least one of: ii. a vertical portion of a stiffening rib protruding from an inside contour of said support device, iii. a stiffening rib protruding from a vertical outer edge of at least one of said bridging structures; iv. a stiffening rib vertically indented in a main planar body of at least one of said bridging structures; such that said bridging structure has increased bending resistance and the buckling opposing interface is stiffened, both to the extend that a buckling tendency of said web portion at an assembly location of said support device on said I-joist remains within predetermined safety limits irrespective an eventually erroneously hole cut into said web portion at said assembly location; the support device is configured such that in said assembled position a main planar body of said support device is immediately adjacent said web portion, said support further comprising: (a) a horizontal stiffening rib horizontally spanning across said at least two bridging structures, said horizontal stiffening rib being substantially perpendicular to said main planar body and wherein said horizontal stiffening rib is positioned on said support device such that said horizontal stiffening rib snuggly contacts in said assembly position a lateral inside portion of at least one of said chords while the bridging structures are oriented across said web; and (b) an angulated hole protruding through and positioned in a fold between said main planar body and the horizontal stiffening rib such that said support device may be attached in an angulated fashion with a fastener through said angulated hole to said I-joist in a corner line along a boundary between said web and at least one of said chords.