itiative has a focus on 3 to 8 storey timber construction for inner-city locations.|
|5.Wagramer- strasse, corner Eipeldauer Strasse, Vienna, Austria, 2012–13||Austria’s highest timber apartment building, with 7 storeys (6 in CLT, on top of a concrete storey); a hybrid construction with staircases in concrete. In total 2400 m3 (19,500 sqm) of CLT panels, manufactured by Binderholz, were used; these panels have stored approx. 2400 tons of CO2.|
|6. ‘e3’ apartment building, 3 Esmarchstrasse, Berlin Prenzlauer Berg, Germany, 2008 (completed April 2008)||7–storey urban infill (height 23 m)||7 apartments (one large apartment per floor)||€2.5 (around €2,100/sqm)||Kaden & Klingbeil Architekten, Berlin||German building regulations changed in 2002, allowing timber construction (a hybrid structure, using CLT and glue-lam) up to 5 storeys.|
|This 7-storey, apartment infill building has been developed in collaboration with the Berlin Fire Department; the concrete escape staircase is separated from the main building. 40% less weight compared to concrete; performs at 27 kWh/sqm/a. CO2 neutral building.|
|7. Holzhausen apartment building, Steinhausen, CH, 2006||6 storeys– 4 storeys in CLT panel, on concrete base||12 units (2 apartments per floor) 150 and 166 sqm in size.||4||Scheitlin, Syfrig & Partner Architekten, Luzern||Switzerland’s first six-storey timber building;|
|fire protection standard in Switzerland, introduced in January 2005, 60-minute fire-resistance capability.|
|Case||Height||Dwellings||Cost in millions||Architects||Comments|
|8. ‘Forté’, 807 Bourke Street, Victoria Harbour, Melbourne, Victoria, Australia, 2012||10-storey residential tower (32.17 m high), 9 storeys of CLT on a concrete podium||23 apartments and retail in ground floor, fully sprinklere; no car parking space.||AUS$11||Lend Lease (Australia), in-house design||Australia’s first CLT timber high-rise building. CLT panels manufactured and imported to Melbourne from KLH, Austria. Site work commenced in February and completed in October 2012. Forté includes 7 one-bedroom apartments (59 square metres), 14 two-bedroom apartments (80 square metres) and two penthouse apartments with two bedrooms (102 square metres).|
4.1. CLT Building 1: ‘Stadthaus’ Multi-Apartment Building in Murray Grove, Hackney, London
The ‘Stadthaus’ was designed by Waugh and Thistleton Architects, and built in 2008. The 9-storey building is a project of local developer Telford Homes and the Metropolitan Housing Association. There are 19 private apartments, 10 social housing units and a residential housing office located in the building. The apartments are a mix of one, two and three bedroom accommodation . The brief of the client was that it needed to look and feel the same as if built in concrete, to avoid issues of acceptance. After the ground floor was constructed the remaining construction was undertaken without a fixed crane in place, and each storey was assembled in three days using four carpenters. The entire building process took 49 weeks with the construction of the 8 CLT storeys taking only 12 weeks. The CLT for walls and floors was sourced from Austria and constructed using the system of KLH in Austria: like a kit of parts, the CLT panels are up to 12 metres long (limited by size for transport; 12 metres is the largest size that could be transported through the channel tunnel to the UK) and weighed a maximum of 15 tonnes. The weight limit allowed use of a mobile crane. The foundations are cast in situ concrete piles designed to accept the weight of a concrete framed building of similar size—a decision to ensure procurement alternatives . Wells notes that the lift core and stairwells are all made in timber. The architect stated that meeting building code requirements for fire was relatively straightforward, relying on the self-protecting properties of timber which can retain its strength during fire for longer periods than steel [54,55]. At the beginning, the unusual construction system was kept secret from the apartment buyers by the developer and all internal wall surfaces were co