Innovative timber buildings – including cross laminated timber and laminated veneer lumber
Liam Dewar, Director - Eurban Limited UK
New design concepts using engineered timber products are promising to increase sustainability and construction efficiency. Cross laminated timber (CLT) and laminated veneer lumber (LVL) are appearing in multi-level building designs of 10 storeys and more.
10. STORED CARBONAPPLICATION / LIFE EXPECTANCY TIMBER USE LIFE EXPECTANCY Fuel Wood 1 year Packaging 2 years Wood Products 10 years Books 25 years Furniture 30 years Woodfibre Insulation 60 years Timber Structure 80 years
16. HIGHER STORED CARBONUSED TO OFFSET MORE EMBODIED CARBON ITEM CARBON FOOTPRINT TIMBER Night in a hotel 25 kg CO2e 0.03 m3 Laptop computer 720 kg CO2e 0.9 m3 Flight – London to Adelaide return 5.7 t CO2e 7.2 m3 Average 40-year-old UK citizen 789 t CO2e 1,001 m3 Average 40-year-old Australian citizen 1,578 t CO2e 2,002 m3 SOURCE: HOW BAD ARE BANANAS?
19. LOWER OPERATIONAL CARBON THROUGH MOISTURE STABILTY The impact of hygroscopic materials (the ability of a material to absorb water from the air) is more effective than mechanical ventilation (0.5 ac / h) SOURCE: RAKENNUSLEHTI, VTT, 2000
106. DARTINGTON SCHOOL PROJECT DATA CLIENT Devon Country Council ARCHITECT White Design GROUNDWORKS ENGINEER Ramboll TIMBER ENGINEER Carbon Eng MAIN CONTRACTOR Interserve BASIC BUILD COST £1,800 / m2 FLOOR AREA 2,030 m2 INSTALLATION PERIOD 12 weeks MATERIALS USED Crosslam / Glulam / Woodfibre Insulation STORED CARBON 600 t CO2e ENVIRONMENTAL RATING BREEAM Excellent ESTIMATED WATER USE 4.3 m3 / pupil / year
163. BRIDPORT HOUSE PROJECT DATA CLIENT Hackney Borough Council ARCHITECT Karakusevic Carson GROUNDWORKS ENGINEER Peter Brett Associates TIMBER ENGINEER Carbon Eng MAIN CONTRACTOR Willmott Dixon BASIC BUILD COST £1,400 / m2 FLOOR AREA 4,154 m2 (41 dwellings) INSTALLATION PERIOD 10 weeks = 40% less than traditional MATERIALS USED Crosslam STORED CARBON 1,200 t CO2e OPERATIONAL CARBON 73.4 t CO2e / year ENVIRONMENTAL RATING CHS Level 4