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EGO CLT and EGO CLT MIX cross laminated timber panels

TECHNICAL DATA

Starting off with a wide variety of wood species, we offer a choice of qualities for panel finishes. Our panels have passed numerous quality and performance tests and they are manufactured with adequate moisture content.

Once on site, the CLT panels are easily fixed using steel fixings e.g. big screws and metal brackets. The clean, simple on-site assembly process is carried out by a reduced team of three to four operators with the help of a crane.

Egoin arranges on-site transportation of the panels and builds the structure under strict health and safety regulations.

 

 


# Dimension and weight of the panels:

EGO_CLT™ and EGO_CLT MIX™ cross laminated timber panels are 14,000mm long x 3,800mm wide. Thicknesses vary from 60mm to 225 mm for EGO_CLT™ and from 190mm to 330mm for EGO_CLT MIX™.


# Wood species used:

We offer a choice of wood species:
- Picea abies or Spruce. It has a light white colour, and a density of 400Kg/m3.
- Pseudotzuga menziessi, commonly known as Douglas Fir. Density of 520Kg/m3, reddish coloured heartwood and a matt white sapwood.
- Insignis Pine or Radiata Pine. Matt with colour and a density of 500kg/m3.
- Larix europeusor or European Larch. Wheat coloured, sometimes with a reddish background; and a density of 550 Kg/m3.

Other wood species are vavailable on request.


# Timber lamella resistance and visual classification:

The timber board used to fabricate cross laminated panels exceed the bending, compression and shear values demanded in the tests carried out during the manufacturing process. EGO_CLT™ and EGO_CLT™ MIX panels are available in two surface qualities: industrial quality, to be covered up and visible quality, for panels to be left exposed.


# Finishes:

Aside from a broad range of wood species, also a variety of surface finishes, varnishes and colour paints are available.


# Glued layer sections:

We adjust the board thicknesses to meet the total panel thickness.


# Moisture content:

We keep the timber moisture content of the boards between 10% and 14% during the manufacturing process.


# Timber board surfaces to be glued:

Before gluing the timber boards their surfaces will be perfectly flattened to a tolerance of less than 0,5 mm in thickness and ± 2mm in width. Different glues are used for gluing the finger-jointed boards and for gluing the cross laminated layers. However, both are based on solvents and formaldehyde free polyurethane mono-component adhesives.


# Environment conditions of the gluing facility:

Our gluing facilities maintain optimal environmental conditions to allow the glue to set: temperature ranging between 15 and 28 degrees and humidity between 55-70%.


# Panel pressing:

The presses that we use for the panels have the following characteristics: 14m long, 3,80m wide, a maximum panel thickness of 360 mm and a pressure of 9 TN/M2.


# Panel fixings:

Bolts and wood screws
Panel fixing is an essential part of the process and is carried out using very large wood screws (different for each application) that range between 8 mm and 12 mm in diameter and 100 to 500 mm in length.

Sizing of the screws
Sizes of the screws used (diameter and length) depend mostly on the panel thickness.

Fixings
We also use steel brackets (with one side of 40-50 mm and the other side longer: 100-140 mm) and join and reinforce the panels.

Number of fixings per panel-to-panel connection
It depends on the type of panel and on whether the connection is made in-house (e.g. for prefabricated modules) or on site. In prefabricated modules the number of fixings per panel is higher due to their heavy weight.

Fixings: surface treatments and coatings
We provide a range of treatments to the metallic components: double chrome electrolytic plating, zinc plateing and hot-dip galvanising. We also use stainless steel fixings.


# Building uses of EGO_CLT™ and EGO_CLT MIX™ panels

Cross laminated timber panels can be used in almost all parts of a building. Walls, floor slabs, roofs, staircases and even shafts. Their high strength allows not only building dream single family houses but also building semi-detached dwellings and multi storey residential flats, commercial and industrial buildings, education and recreational buildings, sport centres, industrial units etc. Also, they are the ideal solution for modular construction as well as for rehabilitation of timber structures

# External walls:

The 3 and 5 layered EGO_CLT™ panels are ideal for external walls and elevator shafts.


# Internal walls:

Panels with thickness between 60mm and165 mm are commonly used as internal walls, load bearing or non-load bearing.


# Party walls:

We recommend using two EGO_CLT™ panels covered with acoustic membrane sheets to obtainin an optimal acoustic insulation.


# Floor and mezzanine slabs:

Floor panel thicknesses must be calculated to the project´s spans and loadings. Slab panels can be manufactured with the lower side to industrial grading, to be plastered at later stage, or visual grade, to be left exposed as a timber ceiling.


# Roofs slabs:

Timber panels can be used both for flat roofs (with insulation and waterproof membrane) and all forms of pitching roofs.


# Modular construction:

The EGO_CLT™ and EGO_CLT MIX™ panels are used for building our modules. These are fully assembled and manufactured in our premises, and once finished they are ready to be transported to their destination.


# Panel storage and transportability:

Large sized and heavy EGO_CLT™ and EGO_CLT MIX™ panels are pressed in a horizontal position and stored in groups in that same position.


# Internal and external walls:

Powerful overhead cranes are used to transport these panels. These cranes are fixed them with the aid of two hook-up points than can withstand a maximum load of 2,500 kg; four hook-up points are used if the weight is higher.

Likewise, in order to ensure safe and speedy transport, vertical panels are fixed with a tough zinc coated steel. This anchor is fixed to the aperture of the clamps used for lifting on site.


# Panels used as slabs:

In the manufacturing unit panels are placed with an overhead crane over 120x120mm longitudinal timber beams at 2.5 centres. Sets of 100mm wide battens are laid down at 2.5m centres between horizontal panels stacked on top, until the maximum weight of 8TN is reached. Then, new 120x120mm beams are used before the next panel to allow for the lower metal crossbeams used for the loading of the truck.


# Horizontal handling of the panels:

In order to transfer or handle the panels we use three modern and effective systems: four hook-up points and wood screws, “C” clamps on the panel´s sides and vacuum suckers.
The panel transport is taken into account from the beginning of the design stage and through the production stage. We have our own lorries allowed for 18 m. long, 3 m. wide and 4,5 m. high transports.


# Handling and assembly of EGO_CLT™ and EGO_CLT_MIX™ panels:

We transport the material directly to site and panels can be hoisted directly from the lorry. Walls are vertically lifted with two or four hook points and a four branch sling. Slabs are lifted horizontally.
Once in position, panels are screwed together or fixed with angle brackets. Vertical elements are plumbed using turnbuckle bracing.


# Basic instructions:

We study your needs, make a structural calculation and analyze the project’s thermo-acoustic needs. To give you the best advice regarding the panel size and types to use. EGO_CLT™ is mostly used as walls while EGO_CLT MIX™ is ideal as a floor and roof slab. We also offer the possibility of preinstalling the finishes, ie, plasterboard, external timber battens etc.


# Protection against moisture:

In order to protect panels against moisture transfer, a 10-20mm high upstand or concrete mortar bed acting as a support between the wall panel and the foundation is necessary. In between the upstand and the wall panel a waterproof membrane is placed, to avoid any moisture penetrating in the timber. For external render finishes with no cavity wall specific waterproof and vapour permeable mortars must be used.
For ventilated facades, waterproof vapour permeable membranes are used.
For humid interior locations (kitchens, bathrooms, toilets), a waterproofing membrane should be placed between the timber panel and the floor and wall lining.


# Fire resistance:

EGO_CLT™ and EGO_CLT MIX™ solid timber panels have a high tested resistance to fire. A residual section is calculated based on a charring rate of 0.7 mm/min. and the panel is calculated considering the resulting reduced section under design loads. When the resistance is lower than required, the panels will be covered with fire resistant plasterboards or other approved materials.


# Acoustics:

The most demanding regulations on acoustic insulation are applied to our structures. EGO CLT MIX panels contain cavities filled with materials with high acoustic absorption coefficients (wood fibre, rock-wool, etc.)


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