Provide 2.5 ft width inlet and 7 submerged orifices with
1"x1" each and maintain velocity in inlet channel larger than 1.0 fps.
Figue 13. Influent Structure--Pipe discharging in a channel which has series of
opening at the bottom.
Figure 14. Plan of influent structure (The dimension doesn't represent the design in the
Flow depth of inlet channel is,
V=1 fps, 1mgd=1.547 ft3/s
Thats ok for the Design
Factors of Vchannel>1.0
Use V=1fps and width <1/2 of tank width
Recalculate velocity with actual depth
- Hydraulic head over orifice:
Consider adverse situation and orifice area(na)
One tank service at Qp=10mgd
Two tanks service at Qp=10 mgd or one tank for QA,d=5mgd,
Use the Design Factors to select your
own design parameters
- Two tanks service at QA,d=2.5 mgd
Go back to previous dialog boxes to calculate Head loss at average flow.
Page | Main Page | Next
- Full-Width Baffle:
6 inches below water surface, 2 inches below orifice bottom.
=3.0' - 0.21' - 0.5' + 1'
size=LxD=25' x 3.3'
If you have any suggestion, please email Professor Roy at firstname.lastname@example.org