Supertall
The Council on Tall Buildings and Urban Habitat (CTBUH) defines a ‘supertall’ building as one that is more than 300 m (984 ft) in height. This classification is exceeded by ‘megatall’ buildings which are those exceeding 600 m (1,968 ft) in height.
The widely recognised CTBUH criteria for determining the height of a building is the ‘…lowest, significant, open-air, pedestrian entrance to the architectural top of the building, including spires, but not including antennae, signage, flagpoles or other functional-technical equipment.’
The first supertall skyscraper was the Chrysler Building, completed in New York in 1930. Only 15 were built between 1930 and 1995, with a rapid increase in building heights since. Between 2010 and 2015, 50 supertall buildings were built. In January 2016, the 100th supertall building was completed, 432 Park Avenue, again in New York.
There are many structural and technical issues facing supertall buildings, and they must be designed to mitigate the threat of seismic activity, heavy winds (as well as the variation in wind speeds between ground and higher levels), and fire. The ability to use structure-mounted cranes and to lift items to the required heights have enabled more supertall buildings to be built.
[edit] Related articles on Designing Buildings
Featured articles and news
70+ experts appointed to public sector fire safety framework
The Fire Safety (FS2) Framework from LHC Procurement.
Project and programme management codes of practice
CIOB publications for built environment professionals.
Sustainable development concepts decade by decade.
The regenerative structural engineer
A call for design that will repair the natural world.
Buildings that mimic the restorative aspects found in nature.
CIAT publishes Principal Designer Competency Framework
For those considering applying for registration as a PD.
BSRIA Building Reg's guidance: The second staircase
An overview focusing on aspects which most affect the building services industry.
Design codes and pattern books
Harmonious proportions and golden sections.
Introducing or next Guest Editor Arun Baybars
Practising architect and design panel review member.
Quick summary by size, shape, test, material, use or bonding.
Types of rapidly renewable content
From forestry to agricultural crops and their by-products.
Terraced houses and the public realm
The discernible difference between the public realm of detached housing and of terraced housing.
Looking back at the influence of climate events
From a designer and writer: 'There are limits to growth but no limits to development'.
Terms, histories, theories and practice.
Biophilic design and natural light
Letting in the light and natural elements into spaces.