Lemnul utilizat

The wood used is spruce from the Carpathian Mountains, carefully selected for quality. This region’s harsh conditions contribute to the wood's excellent quality. Its structure features tight and uniform growth rings, giving it outstanding mechanical and thermal resistance over time, with minimal maintenance required. All defective wood (such as loose knots, diseased wood, etc.) is eliminated right at the sawmill.

The moisture content of the wood before processing is 16% ± 2%.

Spruce has a specific weight between 430 and 470 kg/m³ at 16% moisture content, making it five times lighter than concrete and 17 times lighter than steel. A two-story house with a 100 m² footprint, built with traditional materials (concrete, brick, etc.), weighs around 200 tons, while the same house made with a wooden structure weighs about 70 tons. The strength-to-weight ratio of wood makes it highly attractive for lightweight construction. Additionally, wood absorbs shocks.

Wood is highly resistant to compression and tension along its grain and has good resistance to transverse bending (especially laminated timber). It doesn’t break easily; instead, it bends if the cross-section of the piece under stress is insufficient. In compression, the buckling problem, due to the flexibility of wood, must be addressed by maintaining a relatively small height-to-width ratio.

Wood's compression resistance is high—it takes a load of 10 tons to crush a wooden cube with 5 cm sides.

For construction, we use the following types of wood:

• Solid Wood
• Glued Laminated Timber (Glulam)
• Composite Wood
• OSB Panels (Oriented Strand Board)

Solid Wood:

These elements are obtained from logs or large pieces of timber. Structural cuts are wooden parts that form the framework of a structure, with their primary role being to provide resistance.

Glued Laminated Timber (Glulam):

Glued laminated timber is made by bonding two or more solid wood lamellae along their length, with uniform thickness and cross-sections. This technique allows for increased height and width of wooden components. The adhesive complies with DIN EN 204 group D4 standards (highly water-resistant). Thanks to this method, wooden elements are stable over time, resistant to cracking, and maintain their shape.

Composite Wood:

Composite wood consists of a thermally insulating lamella placed between two solid wood lamellae. We use high-density extruded polystyrene as the insulating material.

OSB Panels (Oriented Strand Board):

These panels are made from large, oriented wood strands bonded together with an organic adhesive. The strands in the outer layers are aligned parallel to the panel's length, while the inner layer strands may be randomly oriented or generally perpendicular to the outer strands.

OSB panels are categorized as:

• OSB 1 – General-purpose panel for use in dry conditions
• OSB 2 – Load-bearing panel for use in dry conditions
• OSB 3 – Load-bearing panel for use in humid conditions
• OSB 4 – Heavy-duty load-bearing panel for use in humid conditions