Posted June 3, 2015
There's a step next to my gravel (farm) driveway, which goes down 2
wooden steps to my patio, and to my house porch. During heavy rains,
water tends to run down the driveway and poured over those steps. So, I
raised the steps to provide a 3 inch rail. Then I dug a trench along the
patio edge where the water could channel. I put a run off spot above
that trench, so any water that went against that rail would go into that
trench. The idea worked, except the water now pours over and makes a
deep washout at the head of that trench.
To solve this, I have decided to make a concrete storm sewer right at
the edge of the steps and have it drain into the trench via some 6 inch
PVC pipe. My plan is to dig a hole next to the steps at the top of them.
Pour a concrete base at the bottom of the hole. When it's dry, I'll set
a 5 gallon plastic pail in the hole, and fill all the way around the
pail with concrete (about 4" thick). The pail will have a hole in the
bottom for the 6" PVC pipe.
So, when the concrete is hard, there will be a concrete basin (lined
with the plastic pail, which will stay in the concrete). The water will
run into that basin, and exit the 6" PVC pipe which will flow down the
trench. All of this is do-able and should work about the same as a storm
sewer in a road.
But I need a grate to put on top, and I dont know where to get one.
A plastic pail is 12" dia. But with 4" of concrete all the way around,
it will be about 20 inches. Therefore I need a grate that is about 20"
square. (I will form a lip with the concrete for it to sit in.).
I should mention that this grate must be steel and strong. I dont want a
person to fall in, but we also have horses around here and they do get
loose at times. I dont want one of them to break a leg in the hole.
Therefore the grate must be capable of at least 1200lbs. (weight of a
fairly big horse).
Anyone know where to buy such a thing?
I looked at some building supply stores and all they had was much
smaller plastic things.
I have thought about asking the county, or nearby town about buying an
actual road grate, but those are too large. (Even though I suppose I
could make a larger pad for it).
My only other option would be to have a machine shop make something, but
that would likely be very costly.
Maybe someone on here knows of a source for them???????