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Abstract
ARMA recently concluded a comprehensive reserach program regarding the wind resistance of asphalt shingles. This research pertain, specificaly to the behavior of composition (asphalt) shingles under various wind loads. The multi year program was carried out under the direction of Dr. J.E. Cermak and Dr. J.A. Peterka, professors at Colorado State University (CSU) and principals of Cermak Peterka Petersen, Inc., and leading researchers in the field of wind engineering. ARMA's purpose was to establish a method to determine shingle uplift pressures under various wind conditions to provide shingle manufacturers with the technology and methodology to improve their products and to be used for building codes and standads. The results may provide positive benefits to roofing manufacturers, code officials, insurance companies, roofing specifiers and other professionals in the residential roofing industry, and also to homeowners. The reserach program involved a multi-progned approach; wind tunnel experiments on small-scale houses, wind tunnel experiments with test decks using full-scale shingles and measurements and observations on a full-scale research building to provide essential information to validate the results from the wind tunnel studies. The objective of this research program was successfully accomplished. The mechanism responsible for shingle uplift was identified, and, for the first time, a wind uplift load model was established in the wind tunneld and validated the the full-scale field experiments. In concurrent work within ARMA, a mechanical shingle tab uplift test method has been developed. It is presently being considered at ASTM as a test method standard. The load model, in conjunction with this test method, can presumable be used by shingle manufacturers and users to desing, manufacture and install shngles to meet the desired wind load criteria. In this paper, the experiments that were conducted in the wind tunnel and performed in the field, will be described in detail. An example of the intended use of the wind load model will also be presented. Current activity and future plans will be discussed.
ARMA recently concluded a comprehensive reserach program regarding the wind resistance of asphalt shingles. This research pertain, specificaly to the behavior of composition (asphalt) shingles under various wind loads. The multi year program was carried out under the direction of Dr. J.E. Cermak and Dr. J.A. Peterka, professors at Colorado State University (CSU) and principals of Cermak Peterka Petersen, Inc., and leading researchers in the field of wind engineering. ARMA's purpose was to establish a method to determine shingle uplift pressures under various wind conditions to provide shingle manufacturers with the technology and methodology to improve their products and to be used for building codes and standads. The results may provide positive benefits to roofing manufacturers, code officials, insurance companies, roofing specifiers and other professionals in the residential roofing industry, and also to homeowners. The reserach program involved a multi-progned approach; wind tunnel experiments on small-scale houses, wind tunnel experiments with test decks using full-scale shingles and measurements and observations on a full-scale research building to provide essential information to validate the results from the wind tunnel studies. The objective of this research program was successfully accomplished. The mechanism responsible for shingle uplift was identified, and, for the first time, a wind uplift load model was established in the wind tunneld and validated the the full-scale field experiments. In concurrent work within ARMA, a mechanical shingle tab uplift test method has been developed. It is presently being considered at ASTM as a test method standard. The load model, in conjunction with this test method, can presumable be used by shingle manufacturers and users to desing, manufacture and install shngles to meet the desired wind load criteria. In this paper, the experiments that were conducted in the wind tunnel and performed in the field, will be described in detail. An example of the intended use of the wind load model will also be presented. Current activity and future plans will be discussed.
Date
12/1998
12/1998
Author(s)
ARMA Research committee
ARMA Research committee
Page(s)
10
10
Keyword(s)
wind resistance; asphalt shingle; research; ARMA
wind resistance; asphalt shingle; research; ARMA