so this 1 1/4" wont flow the 700-800 I need? Because its 4' of head with a 90 which adds a foot of head so it should be around 720-780gph...
DIY OVERFLOW HELP
- Thread starter DrZacharyus
- Start date
ar0wan;1811098; said:ah now i remember the shortcut
1d = 1f
2d = 4f
4d = 16f
so to double the flow you would only need .5x more diameter. So based on midnights .75" = 256gal/hr you would need a 1.5" to carry 1000gal/hr. I think.
yer gonna want 2" pipe all the way DrZacharyus.
Nuh uh...you just squared the diameter. You have to also multiply that result by 3/4.
The formula is "pie are square"; A = (3.14) x r^2
If you substitute in the diameter (D/2 = r) and round pi to three (the decimals are insignificant here),
then,
A = (3) x (D/2)^2
A = (3) x (D^2)/4
A = (3 x D^2)/4
and,
A = 3/4 x D^2
"f" FLOW and "d" DIAMETER.
mah I'm more of a philosopher than a mathmetician neway..
f=256gal/hr
d = .75"
1d = 1f
.75" = 256gal/hr
2d = 4f
1.5" = 1024gal/hr
4d = 16f
3" = 4096gal/hr
mah I'm more of a philosopher than a mathmetician neway..
f=256gal/hr
d = .75"
1d = 1f
.75" = 256gal/hr
2d = 4f
1.5" = 1024gal/hr
4d = 16f
3" = 4096gal/hr
DrZacharyus;1811230; said:
Don't worry about the flow, it will give you more than you could ever dream of. If I recall correctly, it should be up around 1600gph.
ar0wan;1811759; said:
Ok, I get it now. So the short cut actually does work.
btw, cute signature
like i said try it lolDrZacharyus;1811230; said:
as long as you have a valve to slow the flow if it is to much for the overflow then it will work,one way or the other
1 1/4 with about nine 90's will flow 1600gph??CHOMPERS;1811804; said:
only one way to find out
