Round holes may be drilled or cut with a hole saw anywhere within the shaded area of the beam. The horizontal distance between adjacent holes shall be at least two times the diameter of the larger hole. This restriction also applies to the location of access holes relative to bolt holes in multi-ply beams.

Like notches, holes in a glulam beam remove wood fiber, thus reducing the net area of the beam at the hole location and introducing stress concentrations. These effects cause a reduction in the capacity of the beam in the area of the penetration. For this reason, horizontal holes in glued laminated timbers are limited in size and location to ...

Whenever possible, avoid drilling vertical holes through glulam beams. As a rule of thumb, vertical holes drilled through the depth of a glulam beam cause a reduction in the capacity at that location directly proportional to the ratio of 1-1/2 times the diameter of the hole to the width of the beam. For example, a 1-inch hole drilled in a 6 ...

Nov 26, 2021 · Prescriptive recommendations for field notching, tapering, and drilling glulam beams have been developed by the glulam industry based on a combination of practical experience and engineering analysis.

Nov 26, 2021 · Whenever possible, avoid drilling vertical holes through glulam beams. As a rule of thumb, vertical holes drilled through the depth of a glulam beam can reduce the capacity at that location directly proportional to the ratio of 1.5 times the …

This Technical Note provides recommendations for field notching, tapering and drilling glulam beams. Beams illus-trated herein are assumed to be simple span subjected to uniform loads, and are shown with the compression side up. All equations and notching guidelines are presented using the same assumptions. If this information is applied

Nov 26, 2021 · Drilling a pilot hole in a member at the interior corner of a notch as a stop point for the saw blade provides both a rounded corner and minimizes over-cutting at the corner. Permissible horizontal round hole locations for LVL beams under uniform loads.

Like notches, holes in an LVL beam reduce the net section of the beam at the hole location and introduce stress concentrations. This causes a reduction in the beam capacity. For this reason, horizontal holes in LVL are limited in size and location to …

Sep 1, 2021 · Like notches, holes in glulam remove wood fibre, thus reducing the net area of the beam at the hole location and introducing stress concentrations. These effects cause a reduction in the capacity of the beam in the area of the penetration.

Glued laminated timber \(glulam\) beams are highly engineered components manufactured from specially selected and positioned lumber laminations of varying strength and stiffness. Keywords: field-cut notches; field-cut holes; horizontal holes; vertical holes; holes for support or suspended equipment Created Date: 11/4/2014 3:02:57 PM