Wind Resistance Correlation of Adhesive Applied Roofing System

M. R. Mitchell; R. E. Link; H. Tanaka; W. Li; A. Baskaran; B. Martin-Perez

doi:10.1520/jte103805

Wind Resistance Correlation of Adhesive Applied Roofing System

Journal of Testing and Evaluation ◽

10.1520/jte103805 ◽

2011 ◽

Vol 39 (6) ◽

pp. 103805

Author(s):

M. R. Mitchell ◽

R. E. Link ◽

H. Tanaka ◽

W. Li ◽

A. Baskaran ◽

...

Keyword(s):

Wind Resistance ◽

Roofing System

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The Benefit of Horizontal Photovoltaic Panels in Reducing Wind Loads on a Membrane Roofing System on a Flat Roof

Wind ◽

10.3390/wind1010003 ◽

2021 ◽

Vol 1 (1) ◽

pp. 44-62

Author(s):

Yasushi Uematsu ◽

Tetsuo Yambe ◽

Tomoyuki Watanabe ◽

Hirokazu Ikeda

Keyword(s):

Time History ◽

External Pressure ◽

Shielding Effect ◽

Bottom Surface ◽

Wind Resistance ◽

Pressure Equalization ◽

Pv Panel ◽

Strong Winds ◽

Flat Roofs ◽

Roofing System

The present paper proposes a measure for improving the wind-resistant performance of photovoltaic systems and mechanically attached single-ply membrane roofing systems installed on flat roofs by combining them together. Mechanically attached single-ply membrane roofing systems are often used in Japan. These roofing systems are often damaged by strong winds, because they are very sensitive to wind action. Recently, photovoltaic (PV) systems placed on flat roofs have become popular. They are also often damaged by strong winds directed onto the underside, which cause large wind forces onto the PV panels. For improving the wind resistance of these systems, we proposed to install PV panels horizontally with gaps between them. Such an installation may decrease the wind forces on the PV panels due to the pressure equalization effect as well as on the waterproofing membrane due to the shielding effect of the PV panels. This paper discusses the validity of such an idea. The pressure on the bottom surface of a PV panel, called the “layer pressure” here, was evaluated by a numerical simulation based on the unsteady Bernoulli equation. In the simulation, the time history of the external pressure coefficients, measured at many points on the roof in a wind tunnel, was employed. It was found that the wind forces, both on the PV panels and on the roofing system, were significantly reduced. The reduction was large near the roof’s corner, where large suction pressures were induced in oblique winds. Thus, the proposed method improved the wind resistance of both systems significantly.

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Optimization of Wind Resistance of Photovoltaic Roofing System

Structures 2001 ◽

10.1061/40558(2001)104 ◽

2001 ◽

Cited By ~ 1

Author(s):

Colleen O'Brien ◽

David E. Neff ◽

Bogusz Bienkiewicz ◽

Tom Dinwoodie

Keyword(s):

Wind Resistance ◽

Roofing System

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Review of annual progress of bridge engineering in 2019

Advances in Bridge Engineering ◽

10.1186/s43251-020-00011-w ◽

2020 ◽

Vol 1 (1) ◽

Cited By ~ 1

Author(s):

Renda Zhao ◽

Yuan Yuan ◽

Xing Wei ◽

Ruili Shen ◽

Kaifeng Zheng ◽

...

Keyword(s):

High Performance ◽

Concrete Bridges ◽

Bridge Engineering ◽

Research Progress ◽

Steel Bridge ◽

Wind Resistance ◽

Main Research ◽

Bridge Model ◽

Bridge Evaluation ◽

Bridge Structures

AbstractBridge construction is one of the cores of traffic infrastructure construction. To better develop relevant bridge science, this paper introduces the main research progress in China and abroad in 2019 from 13 aspects, including concrete bridges and the high-performance materials, the latest research on steel-concrete composite girders, advances in box girder and cable-supported bridge analysis theories, advance in steel bridges, the theory of bridge evaluation and reinforcement, bridge model tests and new testing techniques, steel bridge fatigue, wind resistance of bridges, vehicle-bridge interactions, progress in seismic design of bridges, bridge hydrodynamics, bridge informatization and intelligent bridge and prefabricated concrete bridge structures.

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