Another question on catch basin

[tabbur]

Question Re: A catch basin installed right up against edge of driveway - should I put weep holes in bottom of basin? will water leaching from bottom of basin (into clay soil) compromise concrete driveway? as it is now, water surrounds drain when heavily raining, so water is already leaching into ground.

Or should I just put concrete in bottom of catch basin up to just below drain to take all the water out of the basin?

 

[Chris705]

I would do the second option of a concrete bottom. Then you can hose the debris that finds it way into the CB out and down the pipe..... or maybe you don’t want that to happen ( pipe clogging) and the bottom becomes a way to capture dirt and stones etc. good luck which ever way you proceed.

 

[flan]

I have one similar and just let the water sit. Never gave it a second thought.

 

[moserjj]

I have about 6 of those, most I drilled a couple small 1/8" hole to let them slowly drain. I would not fill them with concrete, having that space below the exit is good for catching crud

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[Greybeard1]

if you don't mind, I can help with that, having installed several hundred basins over 23 years.

If that's the basin in question is the flow line (bottom of the exit pipe) at the same level as the bottom of the basin or do you have a sump?
A sump is desirable to keep debris from clogging the flow but does require minimal maintenance.

Is the basin back filled with stone as is visible on top or did you back fill with native material dug out of the hole? Weep holes help when you back fill with stone,draining the water away from the outside of the basin.

Had you intended on digging up that basin to make improvements?
If not you're a bit late in the project, sorry to say.

 

[theoldwizard1]

Mine connects to a drain pipe that exits about 20' away. Just enough pitch to let the water flow.

I lined the pit I dug with heavy landscape cloth, position the pipe and basin and back filled the whole thing with marble chips (for looks).

 

[tabbur]

if you don't mind, I can help with that, having installed several hundred basins over 23 years.



If that's the basin in question is the flow line (bottom of the exit pipe) at the same level as the bottom of the basin or do you have a sump?

A sump is desirable to keep debris from clogging the flow but does require minimal maintenance.



Is the basin back filled with stone as is visible on top or did you back fill with native material dug out of the hole? Weep holes help when you back fill with stone,draining the water away from the outside of the basin.



Had you intended on digging up that basin to make improvements?

If not you're a bit late in the project, sorry to say.

Not digging everything up but rather putting cement in bottom of basin so water is not sitting in basin.


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[tabbur]

if you don't mind, I can help with that, having installed several hundred basins over 23 years.



If that's the basin in question is the flow line (bottom of the exit pipe) at the same level as the bottom of the basin or do you have a sump?

A sump is desirable to keep debris from clogging the flow but does require minimal maintenance.



Is the basin back filled with stone as is visible on top or did you back fill with native material dug out of the hole? Weep holes help when you back fill with stone,draining the water away from the outside of the basin.



Had you intended on digging up that basin to make improvements?

If not you're a bit late in the project, sorry to say.

There is a sump. The basin is back filled with native material except for top 8-10" on top which is the stone you see in pic. There is gravel underneath the basin. There are weep holes in bottom but depending on amount of rain we get, the surrounding area of basis becomes water logged and then the sump drains very slowly. A lot of clay material.

Concerned with water sitting in sump - freezing in winter and mosquitos in summer. Kids play on the driveway...

NDS designer had recommended that consumers could also fill the sump with concrete if water sitting in basin was undesirable. So asking for other opinions.


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[steveo1o9]

I would go with the recommended concrete if the area becomes waterlogged like you say. Get the water out faster rather then introduce more water to an already over saturated soil, especially with clay soils.

 

[Greybeard1]

Concrete base is excellent, whether poured or slab but, without a sump you run the real risk of plugging the pipe with debris and having to rod it out.
Do you now get a lot of leaves and twigs in there?
Depending on depth mosquitoes generally aren't a problem in a sump, at least not in a road basin but, if you see a problem they have those tablets to drop in the water. How deep are you?
Back filling with native material is also fine...if it drains.
As you know, clay expands leading to mayhem. The only solution there is to get more drainage around the basin and add weep holes.
Just a suggestion because we never used native for back fill but maybe you can
run a post hole digger down along the sides and fill the cavities with stone then poke some drains into the...what material is the basin anyway?
The grate looks plastic.