Air Leakage Measurements Of The Exterior Walls Of Tall Buildings
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Air Leakage Measurements Of The Exterior Walls Of Tall Buildings
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Author : Chia Yu Shaw
language : en
Publisher:
Release Date : 1973
Air Leakage Measurements Of The Exterior Walls Of Tall Buildings written by Chia Yu Shaw and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Buildings categories.
Simple Test Method For Evaluating Exterior Wall Airtightness Of Tall Office Buildings
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Author : Shin Hayakawa
language : en
Publisher:
Release Date : 1990
Simple Test Method For Evaluating Exterior Wall Airtightness Of Tall Office Buildings written by Shin Hayakawa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Buildings categories.
C.Y. Show, D. M. Sander, and G. T. Tamura developed a test method to measure the air leakage characteristics of exterior walls of buildings that utilized an outdoor sir supply system of ventilation and air handling, taking into account the influence of the stack effect. They applied this method to eight tall buildings in Ottawa, and results were reported. However, windows and wall constructions in Japan are so different than those in Canada that those results cannot be used directly. To obtain our own data, the authors developed a simple test method that utilizes buoyancy caused by the stack effect instead of fans for pressurization. To open doors on the ground floor or the window at the bottom part of the building while the stack effect is operative is the same as pressurizing the whole building, and to open an exit door at the roof or the window at the upper part of the building is the same as decompressing the whole building. This method was applied to three tall buildings of Sendai and Tokyo, whose walls were cast-in-place concrete (Building A), precast concrete panel (Building B), and metal panel (Building C). For the test results, infiltration rates through the exterior wall were estimated by approximate calculation. Of the three, it was found that Building A was the tightest and Building C was the loosest. This paper reports the results of the application for the simple test method we developed.
Measured Air Leakage Of Buildings
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Author : Heinz R. Trechsel
language : en
Publisher: ASTM International
Release Date : 1986
Measured Air Leakage Of Buildings written by Heinz R. Trechsel and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Buildings categories.
Studies On Exterior Wall Air Tightness And Air Infiltration Of Tall Buildings
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Author : Tamura, G. T. (George T.)
language : en
Publisher:
Release Date : 1976
Studies On Exterior Wall Air Tightness And Air Infiltration Of Tall Buildings written by Tamura, G. T. (George T.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with Exterior walls categories.
Air Change Rate And Airtightness In Buildings
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Author : Max Howard Sherman
language : en
Publisher: ASTM International
Release Date : 1990
Air Change Rate And Airtightness In Buildings written by Max Howard Sherman and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Buildings categories.
Methods For Measuring Air Leakage In High Rise Apartments
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Author : S. Gasparetto
language : en
Publisher:
Release Date : 1990
Methods For Measuring Air Leakage In High Rise Apartments written by S. Gasparetto and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Buildings categories.
The balanced fan depressurization method has been modified for application to high-rise apartment buildings in order to measure the overall air leakage and the wall air leakage of an apartment unit simultaneously. The method requires the use of two sets of fan pressurization apparatus. One is installed at the door of an apartment unit for measuring the air leakage rate of the exterior wall, and a much larger apparatus is installed at an exterior door of the building for measuring the overall air leakage rate. The pressures between the test unit and the adjacent units are balanced to minimize the air leakage through the party walls by adjusting the airflow of the larger apparatus and the door opening of the adjacent apartments. The method was successfully applied to two high-rise apartment towers before and after they were retrofitted to improve airtightness of the envelope. In addition, the tracer gas decay method was applied to the same buildings to obtain the infiltration rates of selected apartment units.
Air Infiltration And Internal Pressures In Tall Buildings
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Author : W. A. Dalgliesh
language : en
Publisher:
Release Date : 1988
Air Infiltration And Internal Pressures In Tall Buildings written by W. A. Dalgliesh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Air flow categories.
Wind increases the external pressure on windward walls, and decreases it on side and leeward walls. The walls have leakage paths through which air flows either in or out, depending on whether the internal pressure is lower or higher than the external pressure. Internal pressure adjusts to make inflow equal outflow, and depends on the size and location of large openings as well as the "background" leakage and the external pressure distribution A program, originally written to compute air infiltration, was used to predict the internal pressure for a 56-story building. The analysis showed that the addition of a single opening the size of a typical window may cause as much as a 60 percent increase in the time-averaged maximum cladding pressure, by transferring load from the leeward and side walls to the windward wall.
Development Of Thermal Envelope Design Guidelines For Federal Office Buildings
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Author : Andrew K. Persily
language : en
Publisher:
Release Date : 1990
Development Of Thermal Envelope Design Guidelines For Federal Office Buildings written by Andrew K. Persily and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Office buildings categories.
Office building envelopes are generally successful in meeting a range of structural, aesthetic and thermal requirements. However, poor thermal envelope performance will occur when there are discontinuities in the envelope insulation and air barrier systems, such as thermal bridges and air leakage sites. These discontinuities result from designs that do not adequately account for heat, air and moisture transmission, with many thermal defects being associated with inappropriate or inadequate detailing of the connections of envelope components. Despite the existence of these thermal envelope performance problems, information is available to design and construct envelopes that do perform well. In order to close the gap between available knowledge and current practice, the Public Buildings Service of the General Services Administration has entered into an interagency agreement with the Center for Building Technology of the National Institute of Standards and Technology to develop thermal envelope design guidelines for federal office buildings. The goal of this project is to transfer the knowledge on thermal envelope design and performance from the building research, design and construction communities into a form that will be used by building design professionals. This report describes the NIST/GSA envelope design guidelines development at the end of the first year of effort on the project. The effort to this point has consisted of a literature review of research results and technical information on thermal envelope performance and design, an assessment of existing design guidelines as they relate to the thermal envelope, and the development of a format and outline for the design guidelines.
Tall Building Criteria And Loading
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Author : Leslie E. Robertson
language : en
Publisher: ASCE Publications
Release Date : 1980-01-01
Tall Building Criteria And Loading written by Leslie E. Robertson and has been published by ASCE Publications this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980-01-01 with Technology & Engineering categories.
Prepared by the Council on Tall Buildings and Urban Habitat of ASCE. This report examines the loads to which tall buildings are subjected so that engineers can precisely define the related structural elements that are necessary before translating a client's needs into a safe design. The report explores five different classes of loads?gravity loads and temperature affects, earthquake loads, wind loading and wind effects, fire, and accidental loads?as well as quality control and overall safety considerations.ØSteel buildings, which hold the record for height, tax the designer's ingenuity to provide adequate resistance to lateral loading. Concrete buildings are both more numerous and widely distributed, and for them vertical gravity loads may be the chief problem. Both steel and concrete buildings and lateral and vertical loads are addressed. Other subjects covered include: dead, live, cyclic snow, construction, and combined loads; code requirements; meteorological and environmental factors in design; firefighting provisions; and modeling. Contributions came from more than 800 contributors, all international and professional and heavily representing design and industrial firms. Condensed references follow each chapter, and a glossary is included.
Special Report
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Author :
language : en
Publisher:
Release Date : 1989
Special Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Arctic regions categories.