Research shows the CREE LifeCycleTower (LCT) system requires 50 percent shorter construction times and 39 percent fewer resources over the life of a building. The LCT system can also substantially reduce the amount of concrete used in construction, resulting in a lighter structure, with a smaller foundation and up to 90 percent lower CO2 emissions. While the LCT ONE in Austria is eight stories, research shows the CREE building system has the ability to support as many as 30 stories.
The CREE LCT system works by building wall and floor components from glulam posts and beams.The floors slabs are a hybrid of timber and concrete, optimizing the benefits of both to meet all the structural, fire and acoustic requirements. CREE manufactures the wall and floor components off-site, under a controlled environment, where wasteful and costly mistakes can be contained and do not slow down on-site construction.
Meanwhile, on site, the foundation of a building is laid and the stiffening core is erected. The core contains the elevators and stairs and provides interior support for the hybrid wood/concrete floors. While wood is the optimal choice as a material for the core, concrete and steel can also be used. Since the components are prefabricated off site, the shell construction can go up as quickly as a story a day once the foundation and core are complete (time lapse video).
During fire, steel buildings can collapse without warning once high temperatures are reached. Conversely, wood burns predictably at a constant rate of approximately 1.5 inches per hour.