Sustainable Home Characteristics
Transverse laminated wood construction:
• Environmentally friendly material in terms of energy consumption for production:
1.5 times less energy than for the production of one ton of cement.
3.24 times less energy than for the production of one ton of steel.
• 6 times lighter construction than concrete construction with the same load-bearing capacity.
• By using lightweight materials we reduce transportation and fuel costs 5 times less than regular construction. * A fully equipped house could be shipped to a destination only on 2 trucks.
All production activities for the house are done in 1 production hall/place that way you reduce energy waste x 3
80% reduction in the number of deliveries during construction.
Improved fire resistance
• Improved acoustic properties reach 60 dB according to STC and IIC standards making it sound proof.
• Improved thermal properties, cross wood represents good insulation, no thermal bridges.
• Soothes fluctuations in outside temperatures.
• Healthier living environment because the structure is vapor permeable which prevents the appearance of mold and reduces the possibility of biodegradation.
Seismic load
Research conducted in Europe, Japan and Canada has shown that CLT panel wooden construction is able to withstand strong seismic loads when the connections of ground floor panels and foundation structures, as well as the connections of wall and mezzanine floor panels are made using metal angles and panels and rod mechanical couplings (specially shaped nails, screwless nuts, mandrels).
Sustainability is the ability to balance certain processes or conditions in a system. Sustainability is now one of the basic conditions that are set when building a facility in the world. Design, construction, how to use the facility, all focus on energy efficiency and sustainability.
Wood is certainly the most sustainable material, and CLT panels belong to the technology of green construction. Unlike the production of concrete and steel, the production of CLT panels and their assembly does not produce CO2.
In addition, it is well known that wood binds large amounts of CO2 in its structure during its life cycle, which means that CO2 bound in this way remains in the constructed facility.
Acoustics
CLT also has improved acoustic properties, reaching 60 dB according to STC and IIC standards. The current standard for acoustics dates back to 1963. The standard that defines the noise level (FHA / HUD Noise Control in Multi-Family Housing) in family accommodation was developed in the same year and proposes three noise levels:
• initial level
• intermediate level and
• luxury housing.
Airborne sound insulation (STC) – is a number that shows how much sound a built-in wall or partition will block from one room to another. The sound level is measured on both sides of the barrier, the difference in level shows how much sound the barrier can block. The higher the number, the better the sound insulation.
Table 1 gives the required values of acoustic insulation for buildings to meet sound insulation standards.
CLASS LEVEL
Airborne sound insulation (STC)
Insulation between floors (IIC)
CLASS LEVEL
Airborne sound insulation (STC)
Insulation between floors (IIC)
CLASS LEVEL
Airborne sound insulation (STC)
Insulation between floors (IIC)
CLASS LEVEL
Airborne sound insulation (STC)
Insulation between floors (IIC)
Table 1 – Acoustic insulation between floors (STC / IIC)
Fire resistance
CLT has fire resistance properties like solid wood. By suitable sizing of CLT panels, it is possible to achieve type IV fire resistance according to IBC.
Cross-laminated wood burns 0.67mm / min. and it is possible to determine the duration of the fire. If one side of the panel is exposed to a temperature of 1210 ° C, after 60 minutes on the other side of the panel 10 cm thick, it penetrates only 9.5 ° C.
By using different protective coatings, the reaction of the panel to the effect of fire can be improved.
Architect Alec de Rijke says: “If the 19th century was the century of steel, the 20th century of concrete, then the 21st century is related to building with wood.”
Thermal characteristics of CLT panels
CLT has significantly improved thermal properties, soothes fluctuations in outside temperature, only cross-linked wood provides good insulation, no thermal bridges, and additional insulation can be installed completely independently of the structure itself. Buildings made of CLT represent a healthier living environment because the structure is vapor permeable, which prevents the appearance of mold and reduces the possibility of biodegradation.
The structure itself, the high porosity of the wood and the specific density enable a slow passage of temperature from one side of the wood wall panel to the other. The construction of CLT panels itself meets the criteria of energy efficiency of the building because, in certain climatic conditions, CLT panels, only with their thickness, meet the criteria of the same. The value of the coefficient of thermal conductivity of the panel thickness d = 10 cm is about 0.11 w / mK.