A width of about 6 to 8 inches should work fine in most cases.
Hillside drainage trench gutters.
Pound in two stakes 4 feet from the house and directly in front of each downspout.
If you intend to feed the trench from a downspout connected to the gutters on your roof start at the opening of the spout.
We found that the trench needs to be 10 12 inches deep with about a 2 inch slope.
Lay out the trench photo by smith baer.
We researched how long and deep the trench should be.
Assuming your lot isn t shaped like a large salad bowl with the house at the bottom center look for a spot that s lower than the house to drain the excess water.
The drainage pipe or drain tile as some call it will lay on a bed of gravel in the bottom of the trench and it is very easy to move this gravel around to properly slope the drain pipe.
First thing first dig a trench.
Unlike channel trench drains the slot drain does not contain grate coverings.
This means the downspout end of the gutter should be set 3 4 of an inch lower than the other end.
Use a string and 1x2 stakes to lay out the trench.
This durable drainage system contains all the efficiency of the channel trench drain without forgoing any of the efficiency of the traditional system.
When i thought i was done digging the trench i used an 8 foot long 2x4 and a level to make sure there was some slope to the bottom of my trench.
For example if you have 30 feet of guttering the calculation is 1 4 x 3 0 75 i e.
Weinstein retrofitting offers complete hillside drainage solutions in beverly hills hollywood newhall encino altadena nearby in ca.
Crawl space vapor barrier.
The depth of your trench will depend on the average rainfall you receive as well as the height of the local water table at its seasonal high.
Dig the trench deep enough to drain downhill from the side of the dry well.
Working out gutter slope as a general rule gutter slope is set at 1 4 inch per 10 feet of guttering.
It s typically done in three phases.
You ll also need at least 3 in.
Starting at the most uphill point of your planned drainage system pound in a stake and tie off the string 6 above the ground.
Of crushed rock to add to the bottom of the trench to promote water absorption.
Read on to learn how to expend your downspout in 10 steps.
Digging the trench laying the pipe and backfilling with soil.
Channel trench drains.
Catch basin and surface drain.
Make sure your downspout extension and connector fit together and on your gutter.