Nabin Kumar Ijam | Civil & Hydropower Engineer

INPUTS

Design discharge(\(Q\) in m³/s):

Length of tunnel (\(L_t\) in m):

Shape of tunnel :

Diameter of Tunnel(\(D_t\) in m):

Manning's Constant (\(n\)):

Normal Water level at Forbay (NWL in m):

Factor of Safety (\(F_s\)):

Gross Head (\(H\) in m):

Free board(\(T\) in m):

Revised Diameter of Surge Shaft (\(D_{rs}\) in m):

Calculated Diameter of Shaft (\(D_s\)):

Normal Water level in Surge Shaft (NWLs):

Maximum water level (MWL):

Upsurge level (USL):

Downsurge level (DSL):

Tunnel Crown Level (TCL):

Top level of Surge Shaft including free board: