Prestress Concrete And Green Roof

Precast concrete panels showcase a number of green and sustainable properties.

Prestress concrete and green roof.

Precast roofs have provided a sturdy solution for the construction of the homes. It also saves time and cost. Site credit 6 stormwater management. Sydney zoo by misho associates.

Precast prestressed concrete trusses were introduced in 1978 in the aci journal article titled prestressed concrete trusses. Concept drawing of green roof structure. Site credit 7. Precast pervious paving systems would likely need to be combined with additional measures like green roof assemblies or rain water harvesting to fully comply with this leed credit.

Steel beams or precast walls beams. There are many benefits of using the precast roofs for construction of homes and offices. However only a few buildings have implemented a green roof system in the tropics especially in indonesia and the literature found on this subject is also inadequate. Prototype i that had a clear span of 6 1 m 20 3 ft and a depth of 0 6 m 2 ft for a span to depth ratio of 10 and prototype ii that had a clear span of 18 4 m 60 8 ft and a depth of 2 6 m 8 5 ft for a span to depth.

Prefabricated concrete panels will be used to create tunnels which will be landscaped on top. Double tees may be used for many types of buildings. The system allows for a substantial reduction in on site waste and optimized material usage. The article discussed two prototypes.

The course will be launched at the fifth annual international greening rooftops for sustainable communities conference april 29 may 1 2007 in minneapolis. In addition projects that use this system are increasingly green friendly when panels are fabricated from recycled steel and locally extracted materials. In order to assure that the concrete shell structure will develop its full capability to resist the imposed destructive forces it is essential that the roof structure provide a competent structural diaphragm incorporating a cast in place reinforced concrete slab or well connected precast concrete planks in order to develop the full potential of a concrete shell. Green roofs for healthy cities grhc is developing a course on waterproofing and drainage as it relates to green roof design and implementation.

Precast concrete products do relate directly to four leed credits and a total of eight points. Concrete roof systems have three basic advantages over competitive materials esthetic appeal structural economy and functional utility. There are numerous designs of precast roofs. These precast roofs are usually constructed in a way that is energy efficient.

Double tees are the most widely used prestressed concrete product in the minimum span range.