Silt/sand interceptor

[Woody.v8]

I'm wanting to put a decent sized trap in the ground to catch silt and such, I've got a normal rodable gully in now and I'm forever cleaning it out.
I wash the stockcar off after shale meetings and its unavoidable that quite abit of shale ends up in the grid that blocks easily.
My plan is to build a chamber underground out of engineering brick and waterproof cement with a large sump (600mm?) To the outlet to drain,
I can then scoop this out with big ladle type thingy periodically.
I could even build like a baffle wall so the main solids stay in the first settlement bit and the next one would be cleaner?
That's my plan, has anyone any ideas or input?

 

[thinfourth]

Build a big square bucket with a lifting point

Lift out bucket and empty

 

[awemawson]

There are commercial 'interceptors' used on farms where muck needs to settle before discharge to a water course. Basically a big plastic box with 110mm inlet and outlet sockets and a lid that can be incorporated into a concrete surface.

Here's a smaller domestic one

 

[Bobtail4x4]

you need a chamber with a couple of baffles, the liquid goes over the baffles and the sediment settles between,
think of a W

 

[slim_boy_fat]

Build a big square bucket with a lifting point

Lift out bucket and empty

Be a bit heavy, though?

 

[thinfourth]

Be a bit heavy, though?

Only if you don't plan on how to get it out

A quick frame and a cheap and nasty chain block and jobs a good one

 

[slim_boy_fat]

Only if you don't plan on how to get it out

A quick frame and a cheap and nasty chain block and jobs a good one

Aye, or an engine hoist