Magna Glulam

Certified

Our Kwila Glulam 17C is manufactured to the AS/NZ standard and can be used in place of HyOne or where GL17c is required.

On the Scales

Being a hardwood the Magna Glulam is only 50% heavier than the Pine beams builders are able to cut these using standard tools. An ideal alternative for flitch beams or steel in most circumstances.

Un-Treated

Our Kwila Glulam is naturally durable so treatment is not needed while meeting the strict New Zealand building codes.

Overview

Glue laminated beams (Glulam) are solid wood members manufactured by bonding multiple pieces with proven adhesives to form a larger structural member. Glulam is more uniform and offers improved structural performance over sawn timber.

Lumberbank distributes Kwila GL17c manufactured by Magna Glulam located in Penrith, New South Wales, Australia, a licenced plant in accordance with Australian Standards under a very strict third party audited quality assurance System provided by the Glue Laminated Timber Association of Australia. This product is harvested from legal forests certified by the Forest Stewardship Council.  

The small pieces of Kwila used to make Magna Glulam are kiln dried to 12-16% prior to gluing which means that even the biggest beams and posts have the same moisture content from core to the surface. This factor makes glulam less prone to distortion and moisture sweating than solid timber in large sections.

Availability

We stock the Kwila Glulam in the following sizes:

Thickness (mm) Widths (mm)
85 240, 260, 300

These are available in lengths 4.8 – 7.2m please check what’s available and lead times with our team.

Common Applications

Lintels, Roof Beams, Floor Beams, Bearers

Botanical Name  
Standard Trade Names Kwila
Origin Of Product Indonesia
Density 800 Kg/m3 @ 12% m.c.
Durability Class 1: Durable
Treatment Untreated
Finish Structural
Property   Unit GL17c Values
Modulus of Elasticity E GPa 16.7
Modulus of Rigidity G MPa 1110
Bending (f’b) MPa 40
Tension parallel to grain (f’t) MPa 20
Bearing perpendicular to grain (f’p) MPa 23
Compression parallel to grain (f’c) MPa 33
Shear in Beam (f’s) MPa 4.2

Cuts, Penetrations, and Chamfers

A taper cut of chamfer must not exceed 0.15 of the beam span without nail plate reinforcement.  The minimum depth remaining for the Glulam at the support must not be less than half the original depth of the beam.

Camber

Timber glue-laminated (glulam) beams with a “C” suffix designates a vertical camber radius of 600m. An “S” suffix designates a straight beam profile.

Alignment tolerance of both straight and cambered beams shall be no more than 1mm per metre of beam length. Cambered beams are generally supplied with a marking stamped on the top edge of the beam. Unless specifically requested (such as for large cantilevers), cambered beams should not be installed with the camber arch facing downwards.

Beam Length (m) 4.8 5.4 6 7.2 8.4 9.6
Camber (mm) 4.8 6.1 7.5 10.8 14.7 19.2

Treatment +

Kwila is a hard timber rated 2 in a 6 class scale so consequently it withstands knocks and daily wear and tear far more successfully that timbers such as Radiate Pine and Western Red Cedar and has natural durability.

Channel Partners / Where to buy

Give the Lumberbank team a call, they are happy to point you in the right direction.

Call the lumberbank team

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