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Magna GL13 Laminated Beams and Posts
Description

Magna GL13 laminated beams and posts are structural and decorative building elements manufactured from kiln-dried Merbau, also known as Kwila. The range includes GL13 laminated beams, rafters and lintels for light timber-framed construction, together with Appearance A-grade laminated posts suitable for external structural applications, joinery and furniture.

  • Available as 140 x 140mm and 190 x 190mm sections
  • Beam sections available in 240 x 90mm and 290 x 90mm
  • Available in lengths from 3.6m to 7.2m, depending on section size
  • GL13 posts available in 140 x 140mm and 190 x 190mm sections
Key Features
  • GL13 laminated timber beams and posts
  • Suitable for structural and decorative applications in light timber-framed construction
  • Beams can be used for applications including rafters and lintels
  • Available as 140 x 140 mm and 190 x 190 mm sections
  • Beam sections available in 240 x 90 mm and 290 x 90 mm
  • Available in lengths from 3.6 m to 7.2 m, depending on section size
  • Third-party certified by the Glue Laminated Timber Association of Australia (GLTAA) to relevant AS/NZS standards
  • Product identification includes the Magna logo and structural verification stamp at 2 m intervals across the beam and on the end of the beam/post.
  • Manufactured from Merbau/Kwila timber
  • Timber kiln dried to 12–16% moisture content prior to gluing
  • Posts supplied as Appearance A-grade, free of knots and other defects and smoothly dressed ready for clear coating or painting
  • Suitable for Service Class 3 fully exposed weather conditions, subject to installation and maintenance requirements
  • FSC 100% certified timber
    Manufactured under the GLTAA quality assurance scheme
    Naturally resistant to decay and termites
Scope of Use

Magna GL13 laminated beams and posts are intended for use:

  • In light timber-framed construction
  • In structural and decorative applications, including beams, posts, rafters and lintels
  • In locations subject to specific engineering design or where selected in accordance with Magna engineered span tables
  • In buildings where the relevant part of the building complies with the NZ Building Code
  • In existing buildings where the designer or engineer is satisfied that the existing building is suitable for the intended purpose
  • With fixing materials in accordance with NZS 3604:2011, section 4.0
  • With fabricated connections in accordance with the requirements stated in Magna technical documentation
  • Where specific fire performance is required, when specified in conjunction with a Fire Engineer.
  • Magna GL13 laminated posts are designed for external structural applications and are also suitable for fine joinery and furniture.
  • Magna GL13 beams are intended as structural building elements in light timber-framed construction, including applications as rafters and lintels. 
Limitations on Use
  • Magna GL13 beams and posts must be specifically engineered or selected from the Magna engineered span tables.
  • Where specific fire performance is required, the beams must be specified in conjunction with a Fire Engineer.
  • Specification and installation must be carried out by, or supervised by, a Licensed Building Practitioner with the relevant licence class and access to the relevant technical documentation.
  • Beams must be stored, handled, maintained and installed in accordance with Magna requirements.
  • For above-ground applications only; Magna Glulam must not be used in-ground.
  • Avoid applications where the timber will be subject to prolonged saturation or non-draining horizontal surfaces.
  • The product should be kept dry before installation and protected with an appropriate coating.
  • Protective finishes must be maintained to reduce UV and moisture ingress.
  • Specification and installation must comply with the Magna technical documentation and BPIR requirements.
Statement of Building Code Compliance

When designed, installed and maintained in accordance with Magna requirements, Magna Glulam will comply with or contribute to compliance with the following NZ Building Code provisions:

  • B1 Structure: B1.3.1 and B1.3.2, B1/VM1
  • B2 Durability: B2.3.2(a)
  • C6 Structural Stability: C6.2(a) and C6.3, B1/VM1

Magna Glulam is third-party certified by the Glue Laminated Timber Association of Australia (GLTAA) to relevant AS/NZS standards.

Supporting standards identified in the BPIR include AS/NZS 1328:1998 Parts 1 and 2 for glued laminated structural timber, AS/NZS 8008:2022 for finger-jointed structural timber, and AS/NZS 1720.1:2010 Timber Structures — Design Methods.

In-Service History

 

 

Magna GL13 Building Products Information Requirements — Information Sheet, Revision 1.1, dated 19/07/2024

Magna technical information / engineered span tables

GLTAA certification

Scion durability assessment dated 8 September 2021 and 31 January 2024

Documents
BPIR Product Statement: Magna GL13

v.1.1 2024

Technical Statement: Magna GL13

2024

Product Guide: Magna Glulam
Product Information & Span Tables: Magna Glulam
GLTAA Certification
Scion Opinion: Kwila Glulam Durability & Suitability
Magna Glulam GL13

LumberBank is a New Zealand supplier of engineered timber, structural timber and building products for residential and commercial construction.

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