HOW CLT IS MADE

Solid Timber production

To create our high-quality solid timber products such as Cross-laminated timber (CLT, Crosslam, X-Lam), prefabricated log houses, and timber frame structures, EcoHouseMart utilizes Sokol Timber Company, Segezha Group woodworking plant’s production facilities. All structures are made from sustainably managed forests, for which we have all the necessary certification to prove the Chain of Custody from the FSC (Forest Stewardship Council). The FSC logos are globally trusted trademarks from the world’s leading forest certification systems.
The production plant was founded in 1942 and became one of the leading European producers of glued laminated timber/glulam. Since its foundation, the plant area has tripled and now stands at 56 Acres.
The woodworking plant is a full-cycle woodworking enterprise that starts with the harvesting of wood and, at the end of the process chain, releases ready-made sets of high-quality houses.
Northern coniferous wood has high strength properties – it is dense and low-hygroscopic. Excellent visual characteristics of white spruce provide for its high demand throughout the world.
More than 7,000 families around the world already live in our homes made of high-quality northern wood.

1. FORESTRY

Our company is guaranteed to have raw wood materials (round wood / sawlog). There are forest plots with a total area of 159 681.8 hectares in company’s lease, the estimated cutting area is 364.6 thousand m . Logging is carried out by a separate subdivision.

2. SAWMILLS

The sawlogs are cut on the sawmill with the use of the Finnish-made milling and grinding machine “HewSaw R 250SE”. As a result, sawn timber is produced.

3. DRYING

Drying of sawn timber is carried out in drying chambers “BOLLMANN” (Germany), “MULBOK” (Italy), “Jartek” (Finland), “Baschild” (Italy) to a nal humidity of 12 ± 2%.

4. OPTIMIZATION OF SAWN TIMBER

From the kiln dry lumber enters the workshop where glued wooden structures are made.
• There it is aged for at least 2 days and fed to the optimization line «Sistem TM».
• The temperature and relative humidity of the air in the shop is kept continuously and xed with a thermohydrograph. In the manufacture of glued beams (beams), the moisture content of the wood should not be more than 14%. The moisture content of the wood (the minimum wood temperature is 150 ° C) is measured by an automatic clock hydrometer. Wood, the humidity of which goes beyond the norm, is automatically sorted.
• Sawn timber is classied according to the European standards EN 14081-4, has the characteristic values of gexural strength, tensile strength, compressive strength, shear
strength, modulus and density, which are determined by the Swiss-made scanner Golden Eye 702.
• Saw-timbers for manufacturing of a wall beam (houses) are sorted by quality according to requirements to external and internal surfaces.

 

5. SPLICING/GLUING OF WOOD LAMELLAS ALONG THE LENGTH

• Calibrated, sorted by strength and quality of the workpiece comes to the splicing line “Ducet” (Canada).
• The spikes needed to join the slats are cut parallel to the width of the workpiece on the tenoning machine. First – on one side of the workpieces, then – on the other.
• Adhesive is applied to the surface of the entire length of the incised stud (in separate way on both sides of the joints to be joined by combs).
• Joining blanks are compressed at the pressure of up to 10 N / mm².
• The lamellas are trimmed down to lengths of 39ft and 44ft and are added to the storage table.
• Adhesive system of the world leader Akzo Nobel is used for gluing. The rate of consumption of glue for wooden glued beams is in accordance with the recommendations of Akzo Nobel.

6. PRESSING

• After splicing, the calibrated lamellas, with glue applied to them in the form of cords, are formed into so-called “packs” of lamellas, which are fed into the press of the HDTV “Kallesoe” (Denmark).
• FIS (Forward Integration System) system allows to calculate and optimize the pressing parameters depending on the technological conditions of production.
• The press is complemented by a thermal camera (HeatCamera), which eliminates potential rejection due to “cold” zones in the press. Also, the camera optimizes the cost of heating.
• When pressing, the requirements for the temperature of the adhesive seam are always observed.
• To increase the section of the bar, a cold hydraulic press is used, where the beam is pressed in two planes.

7. PLANING GLUED BEAMS AND BEAMS, VISUAL EXAMINATION

• Planing of beams is done on the planer Ledermac LMC 840.
• Each beam (bar) is visually inspected (visual control by employees) and, if necessary, is repaired. The strength of the product does not decrease, only optical defects are eliminated.

8. COSMETICS + SANDING (IN CASE OF REQUIREMENTS TOWARDS APPEARANCE)

The last stage includes a visual fine-tuning. This is when defects are patched using wood patches. After that, the panels with special requirements for appearance are sanded using a sanding system.

9. UNLOADING

When the container arrives, the receiving crew can break the seal and open the container. Before unloading can start, it is important to visually inspect the load to see if anything has shifted and to see if any possible damage may have occurred in transit. If so, pictures should be taken to document the condition of the load. It is also critical to constantly monitor the position of the packages and verify that they are secured in place before anyone approaches during the unloading process. Special attention must be placed to the vertical packages, which may become unstable when neighboring packages are removed from the container. Unloading of the packages can be done in different ways. Your local job supervisor will be responsible for all unloading procedures, for safety and for deciding to use the right equipment for unloading the panels.

Usually, packages will be directly loaded onto the floor of the container. The unloading can be done with screws and slings (package by package).

An alternative option is the CLT loading plate. Packages are loaded on a 60mm (2.4″) thick, 2.25m (7.4′) wide, and 10.75m (35.3′) long CLT panel. Before unloading, prepare a ramp or platform that can properly support up to 20t (44.000 lbs) and position slightly lower than the container floor that the entire sledge or CLT plate can slide onto. An appropriately sized forklift or winch can extract the load from the container.

10. ASSEMBLY & INSTALLATION

Assembly should be performed by expert timber construction crew or construction companies using a building crane within the shortest possible construction period. The connection of tradition, well-founded craftsmanship, and state-of-the-art timber construction technology enables individual, stable-value constructing with particular attention being attached to the environment and energy consumption.

We are offering various lifting systems, depending on the panel type, panel size, and surface quality.

Our plant is constantly evolving. We regularly update production equipment to constantly improve the quality of our houses. We work with the best architects to give comfort and a new quality of life to everyone who loves and appreciates timber housing, understands its beauty and wants to be closer to nature.

CERTIFICATES

The process chain is certified according to the highest European standards. The company has a strict quality control system. Sorting wood by quality is performed in automatic mode. This completely eliminates wood with large knots and other defects.

  • BM TRADA certificate for confirmation of compliance with EN 14081:2005+A1:2011 No. 1224-CPD-0258 Structural sawn timber with rectangular cross-section, sorted by strength C16-C30, TR 26. Machine sorting. Marking
  • MPA Stuttgart – Otto-Graf-Institut (FMPA) certificate of conformity of products (glued structural beams) with European standard DIN EN-14080-2013 № 0672-CPR-0633
  • The company has an FSC certificate (code NC-COC-014254, NC-CW-014254, license code FSC-C003513). Certification of the production chain from logging to finished products in accordance with Forest Stewardship Council ® standards.
  • Environmental Product Declaration (EPD) – Environmental Product Declaration, which contains the results of the product life cycle assessment (LCA), a report on the composition and environmental characteristics of the product. 

Eco-friendly material is a material that does not harm the environment or humans throughout the entire life cycle: from the extraction of raw materials and its transportation, the manufacture of the final product, operation and other processes up to disposal.

 

Note: Due to differences in personal preferences and requirements, the following items are not included in our packages: foundation, basement support post, any masonry items, plumbing and heating materials, electrical materials, kitchen cabinets or countertops, finish flooring, stains or finishes, roof insulation for log packages, nails, and miscellaneous items, such as flashing and vents.

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