Outrigger systems are rigid horizontal structures designed to improve a building's stability and strength by connecting the building core or spine to distant columns, much in the way an outrigger can prevent a canoe from overturning. Outriggers have been used in tall, narrow buildings for nearly 500 years, but the basic design principle dates back centuries. In the 1980s, as buildings grew taller and more ambitious, outrigger systems eclipsed tubular frames as the most popular structural approach for supertall buildings. Designers embraced properly proportioned core-and-outrigger schemes as a method to offer far more perimeter flexibility and openness for tall buildings than the perimeter moment or braced frames and bundled tubes that preceded them. However, the outrigger system is not listed as a seismic lateral load-resisting system in any code, and design parameters are not available, despite the increasingly frequent use of the concept. The Council on Tall Buildings and Urban Habitat's Outrigger Working Group has addressed the pressing need for design guidelines for outrigger systems with this guide, a comprehensive overview of the use of outriggers in skyscrapers. This guide offers detailed recommendations for analysis of outriggers within the lateral load-resisting systems of tall buildings, for recognizing and addressing effects on building behavior and for practical design solutions. It also highlights concerns specific to the outrigger structural system such as differential column shortening and construction sequence impacts. Several project examples are explored in depth, illustrating the role of outrigger systems in tall building designs and providing ideas for future projects. The guide details the impact of outrigger systems on tall building designs, and demonstrates ways in which the technology is continuously advancing to improve the efficiency and stability of tall buildings around the world.
Product Identifiers
Publisher
Council on Tall Buildings & Urban Habitat
ISBN-13
9780939493340
eBay Product ID (ePID)
208903160
Product Key Features
Subject Area
Civil Engineering
Author
Ctbuh, Hi Sun Choi, Goman HO, Neville Mathias, Leonard Joseph
Publication Name
Outrigger Design for High-Rise Buildings
Format
Paperback
Language
English
Publication Year
2014
Type
Textbook
Number of Pages
88 Pages
Dimensions
Item Height
276mm
Item Width
219mm
Item Weight
340g
Additional Product Features
Title_Author
Goman HO, Ctbuh, Hi Sun Choi, Leonard Joseph, Neville Mathias
Country/Region of Manufacture
United States
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