Rules for Tapered End Cuts

General Rules

• Only available for TimberStrand®, Microllam®, and Parallam®
• Only available for Floor and Roof Flush Beams
• Only available for roof members with a slope of .25/12 and smaller
• Top section of member where cut occurs
• Non-sloped members
• Not available for cantilever ends
• Not available for plank orientation
• Cut can be at either end or both ends simultaneously
• Uplift at support ≤ 310 lbs. (IBC), 450 lbs. (NBCC)

Geometry Checks

The tapered end cut must meet the following geometrical conditions for it to be valid for analysis.

• Heel height ≥ 0.3 * Depth, for bottom supports
• Heel height ≥ 0.4 * Depth, for flush supports
• Cut Length ≤ Middle Third Distance
• Slope ≥ 3

Point loads in the vicinity of tapered end cuts

Point loads that are applied in the vicinity of tapered end cuts are limited to certain magnitudes. If those magnitudes are exceeded, then the cut will fail. Point loads that fall within the support length are not counted toward the limits. Point loads within the cut length or distance equal to product depth away from inside face of support, will adhere to the point load limit.

The figure below shows the point load vicinity.

Point load limit is determined by combining all the point loads regardless of load type and ignoring negative loads, the summation of the loads cannot exceed 310 lbs where LDF is not applied. Applies to IBC and NBCC.