Drains in gutter of negative edge pool/ how many

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Anfisa
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Drains in gutter of negative edge pool/ how many

Postby Anfisa » Tue 10 Nov, 2020 16:52

Good day and thanks in advance for your participation!
We engineer the negative edge pool with water overflow the weir. Small pool is just for decorative purpose with size of L 11 m, D 0.5m and W 0.5m.
The waterfall effect is just wet wall. And wier length all along one wall with wier flow rate =11.8 m3.
The gutter is planned along the length of wier.
The question is How many drains and diameter of drains should be here?
Our engineer insists on 1 drain with diameter 63mm (2") with slope of gutter. But how it might be enough to pass through 3.3 liter per second even with slope?
I insist that minimum 2 drains should be with diameter 90mm (3"). But he says it is too much for such a small pool and wet wall effect.
The gutter cross section size: 100x 180mm.

Gutter is just for water transit.

Will appeeciate your help!


Teapot
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My Pool: 12 x 24 (45m3) liner pool, Triton TR60 filter with AFM glass media (Activate) and variable speed pump running 0.08HP
Location: UK

Re: Drains in gutter of negative edge pool/ how many

Postby Teapot » Wed 11 Nov, 2020 10:16

I use the following when designing my ultra efficient pool hydraulic system circuit.
50mm up to 8000ltr/hr
63mm up to 14000ltr/hr
75mm up to 21000ltr/hr
So in theory you can flow 3.8ltr per second in a 63mm pipe. Bare in mind the imperial pipe is slightly smaller.
Not sure if that helps?
Anfisa
I'm new here
I'm new here
Posts: 4
Joined: Tue 10 Nov, 2020 16:34

Re: Drains in gutter of negative edge pool/ how many

Postby Anfisa » Thu 12 Nov, 2020 01:01

Dear Teapot,
Thanks a lot for your answer!-
Yes, it is hardly believe for me that 63mm drain one can handle such great volume of water .

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