Wood Beam Bolt Pattern

Flatlok is a multi purpose structural wood screw for fastening multi ply lvl girder trusses and multi ply lumber beams.

Wood beam bolt pattern.

Beams since these members contain three wood pieces. The revolutionary top cover plate interlocks with the ledge and adjusts to the thickness of the beam and can be used on smooth or rough cut wood. The shear capacity indicated in table 1 is the shear strength of the wood alone since the full beam reaction must be transferred through the wood side pieces at end bearing supports. The owt bolt inline kit is designed for use with 6 or larger posts.

The critical issue with built up beams is that all the layers must deflect together and by the same distance in order to be properly sharing the load. Veneers arranged in a specific pattern to maximize the strength and sti ness of the veneers and to disperse the naturally occurring characteristics of wood such as knots that can weaken a sawn lumber beam. Now determine capacity of 5 8 inch diameter bolts for loads traveling perpendicular to the grain of the wood. The values in table 1 are based on the steel plate being a36 steel.

This is conservative since the flitch beam being sized actually has bolts in double shear. Lp solidstart lvl beams are exceptionally strong. It should be noted that the equations presented in this section for calculating pattern properties do not require the bolts in the pattern to be the same size. Single sided installation flatlok is approved for single sided installation making the job easier to complete both at ground level or for elevated applications.

Starting about 2 inches from the edges of the beam counterbore two holes on the inside or the least visible side of the beam for carriage bolt nuts. This is a table for single shear bolt capacities. This is a reasonable. Gives a w pattern.

For simplicity use table 11b of the national design specification. Pre assemble beam clamp drill holes. The same properties that are required when analyzing a beam or a shaft are also required when distributing forces over a bolt pattern. Drill through the beam with a long bit the same diameter as the bolts.

Disassemble and apply glue in a triangle inside every and formed by bolt holes and along each edge. For beams where the load comes down evenly on top of the beam such as drop beams or beams directly under bearing walls the nailing pattern is not all that critical. If last bolt in top and bottom rows are more than 8 from end add bolt 1 1 2 from end. Use 2 pieces 1 4 1 2 ply for symmetry.