Winter Design Storm Factor Determination for Airports (2012) / Chapter Skim
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3 This section presents background information on key technical and regulatory aspects of characterizing design events. 2.1 The Importance of Risk and Controlling Drivers The need to document the rationale in defining a winter design storm is driven by regulatory compliance requirements (see Appendix A)
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4will be equally sensitive to the intensity (Section 2.2.2) and assumptions regarding temporal distribution (Section 2.2.3)
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5 2.3 Multi-Storm Analyses Individual storms are anomalies in a continuous time series of variable, interrelated meteorological features. Storm water studies, and consequently storm water control engineering, simplify the variability into definitions more manageable for discrete storm events.
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GNICIED TCEJORP EPYT ngiseD mrotS srotcaF Regulatory/Environm ental Factors N PDES/SPDES Perm it/Environm ental O pera�onal Factors Peak Departure Rates Airfield U � liza�on/Flow Rate Physical Factors Storage Volum e Restric� on Deicing Runoff Collec�on System Restric� on Land Constraints Clim atological Factors Geographic Region Hydrologic Factors Precipita�on Volum e Precipita�on Intensity Precipita�on Tem poral Distribu� on Precipita�on Dura� on Tem perature Probability Inter-Event Period Precipita�on Type tfarcriA gnicieD ecruoS noitcudeR derarfnI gnicied ygolonhcet ○ ● ● ● ● ● ○ ● ○ -- -- -- ● ○ ○ gnicieD ffonuR noitcelloC/tnemniatnoC seitilicaF norpA noitcelloc metsys ● -- -- ● ● -- ● ● ● ● ● -- ○ ● ● locylG noitcelloc selcihev ● ● ● ○ ○ -- ● ○ ○ ○ ○ ○ ○ ○ ○ kcolB - dna - pmup metsys ● -- -- ● ● -- ● ○ ● ● ○ ● ● ● ● dleifriA eganiard tiforter/ngised/gninnalp ● -- -- ● ● ● ● ● ● ● ● -- ○ ● ● dezilartneC gnicied ytilicaf ● ● ● ● ● ● ● ● ● ● ● -- ○ ● ● recieD - nedal wons tnemeganam ● -- ○ ○ -- ● ● ● -- -- ○ ○ ○ ○ ○ gnicieD ffonuR metsyS stnenopmoC elbatroP sknat ● ○ ○ ● ○ ● ○ ● ● ○ ● ● ● ● -- raludoM sknat ● -- -- ● ○ ● ○ ● ● ○ ● ○ ● ● -- sdnoP ● -- -- ● ○ ● ○ ● ● ○ ● ○ ● ● -- tnenamreP sknat ● -- -- ● ○ ● -- ● ● ○ ● ○ ● ● -- launaM dna detamotua noisrevid sevlav ● -- -- ○ ○ -- -- ○ ○ ○ ○ ○ ○ ○ -- laeR - emit gnirotinom ygolonhcet ● -- -- -- -- -- -- -- -- ○ -- ○ -- ○ -- Table 2-1. Matrix to determine applicability of design storm factors of various design project types.
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G N I C I E D T C E J O R P E P Y T n g i s e D m r o t S s r o t c a F Regulatory/Environm ental Factors N PDES/SPDES Perm it/Environm ental O perational Factors Peak Departure Rates Airfield U ti lization/Flow Rate Physical Factors Storage Volum e Restricti on Deicing Runoff Collection System Restricti on Land Constraints Clim atological Factors Geographic Region Hydrologic Factors Precipitation Volum e Precipitation Intensity Precipitation Tem poral Distributi on Precipitation Durati on Tem perature Probability Inter - event Period Precipitation Type h c t a C n i s a b s e v l a v / s t r e s n i ● -- -- ○ ○ -- -- -- ○ ○ ○ -- ○ -- -- g n i c i e D f f o n u R g n i l c y c e R / t n e m t a e r T W T O P e g r a h c s i d ● -- -- ● -- ○ -- ○ -- ○ -- -- -- ○ -- c i b o r e a n A d e z i d i u l f d e b r o t c a e r ● -- -- ● -- ● -- ○ -- -- -- ○ ○ ● -- g n i t a c o r p i c e R e c a f r u s b u s t n e m t a e r t ● -- -- ● -- ● ● ○ -- -- -- ○ ○ ● -- g n i v o M - d e b r o t c a e r o i b t n e m t a e r t m e t s y s ● -- -- ● -- ● -- -- -- -- -- ○ ○ ● -- g n i c n e u q e S h c t a b r o t c a e r ● -- -- ● -- ● -- -- -- -- -- ○ ○ ● -- l a r u t a N t n e m t a e r t m e t s y s ● -- -- ● -- ● ● ○ -- -- -- ○ ○ ● -- e n a r b m e M n o i t a r t l i f ● -- -- ● -- ● -- -- -- -- -- ○ ○ ● -- l o c y l G y r e v o c e r )
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8deicing storm factor to those types of deicing projects. Applicability ratings were categorized as very applicable, somewhat applicable, and not applicable, defined as follows: • Very applicable.
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