Typology of retractable roof structures in stadiums and sports halls
نویسندگان
چکیده
منابع مشابه
Retractable roof structures
j This paper presents a new concept for retractable roof structures. The new structures consist of a foldable lattice of beams connected by cylindrical joints, to which covering panels or membranes are attached. These structures fold towards their perimeter and there is practically no limit to their shape. Solutions to the key problems that have to be solved in the course of the kinematic desig...
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Department of Engineering, University of Cambridge Trumpington Street, Cambridge CB2 1PZ, U.K. Abstract The optimal shape of cover plates for circular, symmetric retractable roof structures based on a grid of multi-angulated rods connected by revolute joints is considered. It is assumed that these cover plates are co-planar, and hence they are not allowed to overlap in any configuration; they a...
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Vigorous plant growth without sunlight is routinely achieved in commercial hydroponic lettuce and tomato production using electric lamps. This same technology can be used to maintain live turf grass in closed athletic stadiums. It can also be used to supplement natural sunlight in retractable roof stadiums. The challenge is to determine the optimal combination of genetic characteristics and env...
متن کاملAlcohol control policies and practices at professional sports stadiums.
OBJECTIVE Alcohol-related problems such as assaults and drinking-driving at or near professional sporting events are commonly reported in the media. An important strategy to reduce such problems may be the use of alcohol control policies at sports stadiums. The objective of this study was to examine alcohol control policies and practices at professional sports stadiums in the U.S. METHODS We ...
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Introduction: The aim of the present study is identification and prioritizing consequences and strategies of effective crisis management in Iranian sports stadiums. Method: The research method was mixed. The qualitative data collection tool was through in-depth interviews. After conducting19 interviews with experts, the codes reached theoretical saturation. Data analysis was performed simultan...
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ژورنال
عنوان ژورنال: Igra ustvarjalnosti - Creativity game
سال: 2013
ISSN: 2350-3637
DOI: 10.15292/iu-cg.2015.03.090-099