Ditch Pitch ?

LBrown59 · May 28, 2005

What is the min recommended drop or slope for a driveway culvert?

I'm installing 80 feet of 15 inch diameter plastic pipe and I don't want the lower end to be to much deeper down than the upper end.

Egon · May 28, 2005

About a quarter of a bubble on a level should do it.

Egon

GAFarmer2 · Jul 11, 2005

I think it is 1 inch slope for every 4 foot of length. Of course, I have been wrong before... /forums/images/graemlins/tongue.gif

Highbeam · Jul 11, 2005

The orange book, a sewer book, calls out the minimum slope for 15 inch to be 0.15 feet per 100. Odd that the diameter is the same as the slope. This slope is to provide enough velocity to push turds down the line and is the reference I use for storm system design.

0.15% is the minimum slope for a 15" pipe.

penokee · Jul 16, 2005

No doubt your culvert was installed some time ago, but including a thread that has quite a bit of info on driveway const. - may help someone.
penokee /forums/images/graemlins/smile.gif

http://theurbanrancher.tamu.edu/home/ruraldriveway.html

Junkman · Jul 18, 2005

</font><font color="blue" class="small">( What is the min recommended drop or slope for a driveway culvert?

I'm installing 80 feet of 15 inch diameter plastic pipe and I don't want the lower end to be to much deeper down than the upper end. )</font>

What is the min recommended drop or slope for a driveway culvert?

I'm installing 80 feet of 15 inch diameter plastic pipe and I don't want the lower end to be to much deeper down than the upper end.

BX23 W/ Ag tires $8100 FEL$2300 BH$3800 60"
MMM$1300. total$15500

Edited by LBrown59 (05/28/05 09:27 PM)

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