Predicting Utah Ground Snow Loads with PRISM
Publication: Journal of Structural Engineering
Volume 143, Issue 9
Abstract
Despite their importance in building design, ground snow load requirements remain largely undefined for the western United States. This paper proposes an adaptation of the Parameter-Elevation Relationships on Independent Slopes Model (PRISM) for predicting ground snow loads, using Utah as the area of interest to test the efficacy of the algorithm. It can be concluded that data filtering is exceptionally important to effective extreme-value estimations. In addition, using the log transform of the resulting 50-year ground snow load estimates as the response variable satisfies the basic linearity assumptions required for any linear regression–based estimator. A comparison of PRISM predictions with the current ground snow load requirements defined for Utah shows that PRISM yields lower absolute errors and less bias than the current methods used in the state. These predictions also eliminate existing discrepancies in ground snow load requirements along county boundaries within Utah and provide the framework for the elimination of ground snow load requirement discrepancies along state boundaries throughout the western United States.
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References
Al Hatailah, H., Godfrey, B. R., Nielsen, R. J., and Sack, R. L. (2015). “Ground snow loads for Idaho–2015 edition.” ⟨http://www.lib.uidaho.edu/digital/idahosnow/GroundSnowLoadsforIdaho2015.pdf⟩ (Jun. 9, 2017).
AP (Associated Press). (2008). “Snow collapses roofs, snarls traffic in Northwest.” ⟨http://usatoday30.usatoday.com/weather/storms/winter/2008-01-28-west-storm_N.htm⟩ (Jun. 14, 2017).
AP (Associated Press). (2011). “Snow causes buildings to collapse in Idaho, Mont.” ⟨http://www.foxnews.com/us/2011/01/18/idaho-building-partially-collapses-crews-scene.html⟩ (Jun. 14, 2017).
ASCE. (2010). “Minimum design loads for buildings and other structures.”, New York.
Baxter, M. A., Graves, C. E., and Moore, J. T. (2005). “A climatology of snow-to-liquid ratio for the contiguous united states.” Weather Forecasting, 20(5), 729–744.
Bivand, R., Keitt, T., and Rowlingson, B. (2016). “rgdal: Bindings for the geospatial data abstraction library.” ⟨https://CRAN.R-project.org/package=rgdal⟩ (Jan. 30, 2017).
Business Wire. (2016). “Travelers identifies most common and costliest homeowners claims.” ⟨http://www.businesswire.com/news/home/20160406005833/en/⟩ (Jun. 14, 2017).
Daly, C., et al. (2008). “Physiographically sensitive mapping of climatological temperature and precipitation across the conterminous United States.” Int. J. Climatol., 28(15), 2031–2064.
Daly, C., and Bryant, K. (2013). “The PRISM climate and weather system—An introduction.” PRISM Climate Group, Corvallis, OR.
Daly, C., Gibson, W. P., Taylor, G. H., Johnson, G. L., and Pasteris, P. (2002). “A knowledge-based approach to the statistical mapping of climate.” Climate Res., 22(2), 99–113.
Delignette-Muller, M. L., and Dutang, C. (2015). “fitdistrplus: An R package for fitting distributions.” J. Stat. Software, 64(4), 1–34.
Durre, I., Menne, M. J., Gleason, B. E., Houston, T. G., and Vose, R. S. (2010). “Comprehensive automated quality assurance of daily surface observations.” J. Appl. Meteorol. Climatol., 49(8), 1615–1633.
GHCN (Global Historical Climatology Network). (2016). “GHCN—Daily documentation.” ⟨https://www1.ncdc.noaa.gov/pub/data/cdo/documentation/GHCND_documentation.pdf⟩ (Jun. 14, 2017).
Gillies, R. R., Wang, S.-Y., and Booth, M. R. (2012). “Observational and synoptic analyses of the winter precipitation regime change over Utah.” J. Clim., 25(13), 4679–4698.
Hijmans, R. J. (2015). “raster: Geographic data analysis and modeling.” ⟨https://CRAN.R-project.org/package=raster⟩ (Jan. 30, 2017).
Khatri, D. (2015). “Snow load collapse of a manufacturing building in Oregon.” Structure Magazine, Nov. 2015, 48–49.
Maguire, M., Chang, M., Collins, W. N., and Sun, Y. (2016). “Stress increase of unbonded tendons in continuous posttensioned members.” J. Bridge Eng., 04016115.
Maguire, M., Moen, C. D., Roberts-Wollmann, C., and Cousins, T. (2014). “Field verification of simplified analysis procedures for segmental concrete bridges.” J. Struct. Eng., D4014007.
Mishra, B., Tachikawa, Y., and Takara, K. (2007). “Suitability of sample size for identifying distribution function in regional frequency analysis.” ⟨https://www.researchgate.net/profile/Kaoru_Takara2/publication/32175848_Suitability_of_Sample_Size_for_Identifying_Distribution_Function_in_Regional_Frequency_Analysis/links/02bfe50f082bd4858a000000.pdf⟩ (Jun. 14, 2017).
Neuwirth, E. (2014). “RColorBrewer: ColorBrewer palettes.” ⟨https://CRAN.R-project.org/package=RColorBrewer⟩ (Jan. 30, 2017).
Nychka, D., Furrer, R., Paige, J., and Sain, S. (2015). “Fields: Tools for spatial data.” ⟨www.image.ucar.edu/fields⟩ (Jan. 30, 2017).
O’Rourke, M. (2013). “Snow related roof collapse and implications for building codes.” ⟨http://www.structuremag.org/?p=1155⟩ (Jun. 14, 2017).
PRISM Climate Group. (2017). “PRISM climate data.” Northwest Alliance for Computational Science and Engineering, ⟨http://prism.oregonstate.edu⟩ (Jun. 9, 2017).
PRISM Climate Group and NACSE (Northwest Alliance for Computational Science and Engineering). (2012). “An updated snow load map and internet map server for Oregon.” ⟨http://snowload.seao.org/doc/SEAO_snow_load_final_report_May2012.pdf⟩ (Jun. 14, 2017).
R 3.3.1 [Computer software]. R Foundation for Statistical Computing, Vienna, Austria.
Sack, R. L. (2015). “Ground snow loads for the western United States: State of the art.” J. Struct. Eng., 04015082.
Sack, R. L., and Sheikh-Taheri, A. (1986). Ground and roof snow loads for Idaho, Univ. of Idaho, Dept. of Civil Engineering, Moscow, ID.
Scholz, F. (1995). “Nonparametric tail extrapolation.” ⟨http://www.stat.washington.edu/fritz/Reports/ISSTECH-95-014.Pdf⟩ (Jun. 14, 2017).
SEAU (Structural Engineers Association of Utah). (1992). Utah snow load study, Salt Lake City.
Sturm, M., Holmgren, J., and Liston, G. E. (1995). “A seasonal snow cover classification system for local to global applications.” J. Clim., 8(5), 1261–1283.
Sturm, M., Taras, B., Liston, G. E., Derksen, C., Jonas, T., and Lea, J. (2010). “Estimating snow water equivalent using snow depth data and climate classes.” J. Hydrometeorol., 11(6), 1380–1394.
Torrents, J. M., DeBock, D. J., Harris, J. R., Liel, A. B., and Patillo, R. M. (2016). Colorado design snow loads, Structural Engineers Association of Colorado, Lakewood, CO.
USGS. (2016a). “The national map.” ⟨http://nationalmap.gov⟩ (May 15, 2016).
USGS. (2016b). “Watershed boundary dataset.” ⟨http://datagateway.nrcs.usda.gov⟩ (May 15, 2016).
Wickham, H. (2011). “The split-apply-combine strategy for data analysis.” J. Stat. Software, 40(1), 1–29.
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©2017 American Society of Civil Engineers.
History
Received: Sep 28, 2016
Accepted: Apr 18, 2017
Published online: Jun 30, 2017
Published in print: Sep 1, 2017
Discussion open until: Nov 30, 2017
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