MM masterline
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GLULAM BEAMS

In safe hands Mayr-Melnhof Holz is committed to sustainable and ecological practices. Informed and responsible management of natural resources – regrowth and expansion of our forests – lies at the heart of our business.

WHERE IDEAS CAN GROW. Mayr-Melnhof Holz Holding AG is Central Europe’s leading timber industry company and has a complete value-added chain from its own forests via sawing up to timber engineering. The roots of our brand date back to 1850 and form the basis for our entrepreneurial thinking, which is reflected in values like quality, modernity, sustainability, and tradition. In glulam construction, we are among the pioneers of the industry and understand ourselves as producer and consultant for perfect solutions in timber from a single source. Our business partners are based in timber trade,...

Products of Mayr-Melnhof HolzMM masterline Glulam beams MMprofideck Laminated ceiling elements MMblockdeck Floor and wall beams MMcrosslam Cross-laminated timber K1 multiplan 3-ply structural panels K1 yellowplan Formwork panels MM sawn timber MMroyalpellets MM royalbriquettes Mayr-Melnhof Holz Holding AG Turmgasse 67 • 8700 Leoben • Austria T +43 3842 300 0 ■ F +43 3842 300 1 210 holding@mm-holz.com • www.mm-holz.com Esteemed Customer, thank you for your interest in our products. Please note that this document is a sales brochure and that the quoted figures are merely reference values. The...

Glulam - timber construction in a new dimension masterline is the quality label for glulam beams from the Mayr-Melnhof Holz. The masterline trademark stands for innovative engineering, superb quality, expert advice and dependable delivery service. As an internationally oriented company, we advise architects, engineers, timber builders and commercial customers throughout the world in the planning and realisation of challenging, creative building projects with our timber engineering products. We regard exceptional requirements as a challenge. Areas of application • Residential houses and...

Facts MM masterline: Types of wood • Spruce • Larch Surface qualities • Visible quality (Si) • Industrial quality (NSi) Dimensions • Widths: from 6 to 28 cm • Heights: from 10 to 220 cm • Lengths: from 3 to 36 m Product standard Aesthetic, resilient and incredibly versatile The trend in recent years towards «green» construction has induced architects and engineers to use timber – the natural building material – as the most salient architectural element in a very wide range of building projects. The fascination of glulam lies in the flexibility of the timber to be formed into almost any...

Large spans With the same load-bearing capacity, glulam is lighter than steel. The high load-bearing capacity with lower dead weight allows tight dimensioning of the components. Thanks to the excellent material properties spans of up to 100 metres can be realised using the proper structural system and strength graded glulam. Even with regard to transport, timber offers significant advantages because of its low dead weight. The costs of transport and the environmental pollution are comparatively low. Free shapes Glulam can be produced as straight, pre-cambered, arched or bent members in a...

Resistant to aggressive chemical substances Glulam is resistant to aggressive chemical substances. Therefore structures made of glulam are also suitable for buildings that are used to store materials such as fertilisers, salt or acids. Glulam beams and trusses are the preferred building material when it comes to swimming pool and wellness spa structures as they combine structural advantages with the resistance to an aggressive climate while providing an aesthetical appearance. Durable comfort Timber lends to a warm, comfortable ambience which immediately gives people a sense of well being....

Glulam Lay-up Glulam beams consists of at least 3 lamellas glued together with the longitudinal grain of the lamellas in parallel direction. Glulam is normally stressed in bending, so that the highest stresses arise in the tensile and compression zone. The layered construction of glulam allows lamellas to be used in the various elastomechanical zones of the beam according to their quality (strength sorting). Thus the high-quality lamellas of a bending beam are laid across the beam height in the tensile and compression zones according to the stress curve. The middle layers can have a lower...

Melamine resin-based adhesive, Adhesive Type I in acc. with EN 301, approved for gluing load-bearing timber components both for interiors and exteriors. Colour of glued joints Light-coloured glue lines (melamine adhesive) Dark-coloured glue lines for custom glueing Load-Bearing Capacity % Timber 25% reduction @ 30 min 50% reduction -550°C Steel 90% reduction @ 30 min Lamella thicknesses The lamella thickness depends on the curvature of the component (radius) as well as the climatological conditions. • Straight components: Lamella thickness d = 40 mm (applies to Service Classes 1 and 2 only)...

multi-purpose sports hall City, Province: Year of construction: Architect: Builder-owner: Product: Bregenz, Vorarlberg 2003 Nägele Ritsch Waibel Provincial Capital Bregenz ,

Quality Optical quality masterline glulam is produced in two different surface qualities: Visible quality: For visible use e.g. in residential areas, nurseries, schools, sports facilities Industrial quality: For use in non-visible areas e.g. industrial buildings, composting plants, agricultural buildings, wood covered ceilings and roof beams Planing 4 sides clean planed surface Without impregnation Edges 4 edges are slightly chamfered Special shapes: other edge designs on request Quality criteria Surface quality of masterline glulam: Notes • Criteria are based on the surface quality at the...

Dimensional tolerances for straight components Our engineered timber products are always produced to the precise dimension ordered. Manufacturing tolerances and the natural shrinking and swelling behaviour of timber may result in dimensional deviations of the cross-section of ± 2 mm. The dimensional tolerances for glulam are governed by EN 390. The reference moisture content is 1 2%: Dimensional tolerances for curved components Crack formation As a result of the natural tendency of the wood to shrink and swell, shrinkage cracks may occur depending on the ambient conditions. The outer layers...