online_ogee_rating:   Calculation of ogee spillway rating


Formulas

HD = Hd + [Va/(2g)]

β = H/HD       βi = Hi/HD       Hi = βi HD

Ei = E + Hi       Ci = (Ci/CD) CD

Qi = Ci (2g)1/2 L Hi3/2

Design Graphs



INPUT DATA:

Select:      

Choose SI or U.S. Customary units:

Spillway length L (m) [ft]:       

Design head (excluding Va) Hd (m) [ft]:       

Approach velocity Va (m/s) [fps]:       
[ Leave blank if you want the program to neglect the approach velocity ].

Dam height P (m) [ft]:       

Freeboard Fb (m) [ft]:       

Spillway crest elevation E (m) [ft]:       

OUTPUT:

iElevation Ei
(m)
Head Hi
(m)
Hi / HDCi / CDCiQi
(m3/s)
0000000


            

  Your request was processed at  12:10:05 pm on April 24th, 2014   [ 140424  12:10:05 ].


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