Ditch Pitch ?

[LBrown59]

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]

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

Egon

 

[GAFarmer2]

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]

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]

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]

</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)

/forums/images/graemlins/grin.gif

 

[GeneD14]

An excavator that I used to help said the rule of thumb was 1" drop for every 10' run.

 

[LBrown59]

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