Distribution of Wind Loads in Metal-Clad Roofing Structures
Publication: Journal of Structural Engineering
Volume 144, Issue 4
Abstract
The roof is the part that experiences the largest wind load and is usually the most vulnerable part of a house. However, data on how the wind loads are transferred through the roof structure are scarce. The fluctuating nature and variable spatial distribution of wind loads combined with the structural response can cause significant challenges for assessing the distribution or sharing of loads in a roof. Such studies are required to obtain more reliable estimates on vulnerability assessment to windstorms. This paper describes the transmission of wind loads from the pressure on the cladding through the cladding-to-batten connections to the batten-to-truss connections on a roofing system typical of that in many contemporary houses constructed in cyclonic regions of Australia. The study found that the use of normal design practices can significantly underestimate connection loads when highly correlated large-scale wind pressures act on these roof systems.
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References
Boughton, G. N., et al. (2011). Tropical cyclone Yasi structural damage to buildings, James Cook Univ., Townsville, Australia.
Boughton, G. N., and Reardon, G. F. (1982). Simulated wind tests on a house, James Cook Univ., Townsville, Australia.
Boughton, G. N., and Reardon, G. F. (1983). Testing a high set house designed for 42 m/s winds, James Cook Univ., Townsville, Australia.
Boughton, G. N., and Reardon, G. F. (1984). Simulated wind load tests on the Tongan hurricane house, James Cook Univ., Townsville, Australia.
Brown, C. B., and Elms, D. G. (2015). “Engineering decisions: Information, knowledge and understanding.” Struct. Saf., 52, 66–77.
Dong, Y., and Li, Y. (2016). “Reliability of roof panels in coastal areas considering effects of climate change and embeded corrosion of metal fasteners.” ASCE-ASME J. Risk Uncertainty Eng. Syst. Part A: Civ. Eng., 2(1), 04015016.
Ellingwood, B. R., Rosowsky, D. V., Li, Y., and Kim, J. H. (2004). “Fragility assessment of light-frame wood construction subjected to wind and earthquake hazards.” J. Struct. Eng., 1921–1930.
He, W. X., and Hong, H. P. (2012). “Probabilistic characterization of roof panel uplift capacity under wind loading.” Can. J. Civ. Eng., 39(12), 1285–1296.
Henderson, D. J. (2010). “Response of pierced fixed metal roof cladding to fluctuating wind loads.” Ph.D. thesis, James Cook Univ., Townsville, Australia.
Henderson, D. J., and Ginger, J. D. (2011). “Response of pierced fixed corrugated steel roofing systems subjected to wind loads.” Eng. Struct., 33(12), 3290–3298.
Holmes, J. D. (1981). Wind pressures on houses with high pitched roofs, James Cook Univ., Townsville, Australia.
Hong, H. P., and He, W. X. (2015). “Effect of human error on the reliability of roof panel under uplift wind pressure.” Struct. Saf., 52, 54–65.
Jancauskas, E. D., Mahendran, M., and Walker, G. R. (1994). “Computer simulation of the fatigue behaviour of roof cladding during the passage of a tropical cyclone.” J. Wind. Ind. Aerodyn., 51(2), 215–227.
Jayasinghe, N. C. (2012). “The distribution of wind loads and vulnerability of metal clad roofing structures in contemporary Australian houses.” Ph.D. thesis, James Cook Univ., Townsville, Australia.
Jayasinghe, N. C., and Ginger, J. D. (2011). “Vulnerability of roofing components to wind loads.” Wind Struct., 14(4), 321–335.
Jayasinghe, N. C., Ginger, J. D., Henderson, D. J., and Walker, G. R. (2012). “Distribution of wind loads in roofing connections.” Australasian Structural Engineering Conf. 2012 (ASEC12), Engineers Australia, Barton, Australia, 1–8.
LabVIEW version 8.5 [Computer software]. National Instruments Australia Pty Ltd., Sydney, Australia.
Leitch, C., Ginger, J. D., Harper, B., Kim, P., Jayasinghe, N. C., and Somerville, L. R. (2010). “Performance of housing in Brisbane following storms on 16 November 2008.” Aust. J. Stuct. Eng., 11(1), 45–62.
Li, Y., and Ellingwood, B. R. (2006). “Hurricane damage to residential construction in the US: Importance of uncertainty modeling in risk assessment.” Eng. Struct., 28(7), 1009–1018.
Meecham, D., Surry, D., and Davenport, A. G. (1991). “The magnitude and distribution of wind-induced pressures on hip and gable roofs.” J. Wind. Ind. Aerodyn., 38(2–3), 257–272.
Morrison, M. J., and Kopp, G. A. (2011). “Performance of toe-nail connections under realistic wind loading.” Eng Struct., 33(1), 69–76.
Pinelli, J. P., Pita, G., Gurley, K., Torkian, B., Hamid, S., and Subramanian, C. (2011). “Damage characterization: Application to Florida public hurricane loss model.” Nat. Hazard. Rev., 190–195.
Pinelli, J.-P., et al. (2004). “Hurricane damage prediction model for residential structures.” J. Struct. Eng., 1685–1691.
Reardon, G. F., and Holmes, J. D. (1981). Wind tunnel research on low rise buildings, James Cook Univ., Townsville, Australia.
SPACE GASS version 10.85 [Computer software]. Integrated Technical Software Pty Ltd., Geelong, VIC, Australia.
Standard Australia. (2011). “Structural design action. Part 2: Wind action.” AS/NZS 1170.2, Sydney, Australia.
Unanwa, C. O., McDonald, J. R., Mehta, K. C., and Smith, D. A. (2000). “The development of wind damage bands for buildings.” J. Wind. Ind. Aerodyn., 84(1), 119–149.
Vickery, P. J., Skerlj, P. F., Lin, J., Twisdale, J. L. A., Young, M. A., and Lavelle, F. M. (2006). “HAZUS-MH hurricane model methodology. II: Damage and loss estimation.” Nat. Hazard. Rev., 94–103.
Walker, G. R. (1975). “Report on cyclone Tracy—Effect on buildings—Dec 1974.” Australian Dept. of Housing and Construction, Hawthorn, VIC, Australia.
Walker, G. R. (2011). “Modelling the vulnerability of buildings to wind—A review.” Can. J. Civ. Eng., 38(9), 1031–1039.
Wehner, M., Sandland, C., Holmes, J. D., Kim, P., Jayasinghe, N. C., and Edwards, M. (2010). “Development of a software tool for quantitative assessment of the vulnerability of Australian residential building stock to severe wind.” 14th Australasian Wind Engineering Workshop, Geosciences Australia, Canberra, Australia.
Whalen, M. T., Sadek, F., and Simiu, E. (2002). “Database-assisted design for wind: Basic concepts and software development.” J. Wind. Ind. Aerodyn., 90(11), 1349–1368.
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©2018 American Society of Civil Engineers.
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Received: Jun 5, 2016
Accepted: Sep 20, 2017
Published online: Jan 18, 2018
Published in print: Apr 1, 2018
Discussion open until: Jun 18, 2018
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