Laserfiche WebLink
<br /> I <br />f = Darcy-Weisbach friction factor J <br />f' = Darcy-Weisbach friction factor for the grain roughness <br /> b I <br />f = seepage force <br />s <br />f = exponent of the flow depth relationship I <br />G = gradation coefficient <br />g = acceleration due to gravity I <br />H = total energy <br />H = entrance loss of head <br /> e I <br />H = average head loss over a cross-section <br /> e <br />Hf = fr iction loss of head <br />H = minimum total energy at a critical section I <br /> min <br />H = total head <br /> T <br />H = velocity head I <br /> v <br />HW = headwater at a culvert <br /> 2 <br />H = horizontal side slope related to one unit vertically <br /> s I <br />hL = head loss in a hydraulic jump <br />h = head loss <br /> e II <br />h * = total backwater elevation <br /> 1 <br />b.h = drop in water surface elevation through bridge opening <br />1,1 = integrals in the Einstein method I <br />1 2 <br />ib = fraction of the bed load for given equation <br />i = fraction of the suspended load for a given equation I <br />s <br />iT = fraction of total load for a given equation <br />J = ratio of projected area of piers to the gross constricted area A <br /> n2 I <br />. <br />j = exponent of the bed sediment discharge relationship <br />K = coefficient of the Meyer-Peter and Muller equation I <br />K ,K = coefficient for the area and volume of sediment particles <br /> 1 2 <br />KB' Kr = coefficient in Meyer-Peter, Muller equation <br />Kb = base backwater coefficient I <br />K = entrance loss coefficient for culverts <br /> e <br />t.K = correction coefficient for piers I <br />t.K = incremental correction coefficient for excentricity <br /> e <br />t.K = incremental correction coefficient for piers I <br /> p <br />t.K = incremental correction coefficient for skewed flow <br /> s .. <br />k = height of roughness elements <br /> s <br /> xxxii <br /> I <br />