1/4" per foot drop around a corner?

[Paradise Ridge]

I know it's kinda a dumb question, but I need to trench for a 30' sewer line and it goes around a blind corner.

I lent my transit out a couple of weeks ago, and they are 100+ miles away.

A string line would work, but the corner shrows a gotcha into the system. I know I need a 7.5" drop, but I'd rather not put in the pipe then make the trench fit.

Any ideas?

Thanks!

Scott

 

[Spencer Was Here]

You can use a water level

 

[the intimidator]

what you could do is run 2 pices of string and have them cross at the corner that should tell you what you need to know if not i've run out of ideas lol

 

[swgray]

String lines should work or even a level off of a common reference point (foundation or course of block or brick)

Or even a 4 foot level with a 1" block under one end. Or an 8 foot level with a 2" block under an end.

If the corner is 10 feet from the start it'll be 2.5" lower than the starting point. The remaining 20 feet will drop another 5" for a total of 7.5 inches of drop.

No real need for a transit just for 30 feet of slope. But, that's just me.

 

[dink]

Water level is the best bet....water is the most level out there

Here is a water level to use...it beeps when its level with the amount of water you want

http://www.zircon.com/SellPages/LevelAndLaser/WL25pro/WL25pro.html

 

[Charles (in GA)]

You can do it with nothing more than a garden hose, but 50 foot of 1/4" clear tygon tubing or similar will work equally well, with a couple of wood stakes to tape the tubing to, and a funnel.

Charles