Need to change main drain cover

[DogsBody]

I am not really sure what I need to buy.
This is a picture of my current (only) drain cover.

It is quite frankly useless,
I want one that will "hold" water in the top when I sweep the patio.
The problem is I have no idea what I am looking for

1 - What is the proper name for this
2 - how do I know what depth
3 - how do I know what pipe size it joins to
4 - how do I join it to the pipe below, ie is there a rubber seal or does it need mortar etc.

do I need any membrane around the top ?

 

[DogsBody]

Don't understand what you mean with ' I want one that will "hold" water in the top when I sweep the patio'?

when I sweep the water into it, some of it goes down the drain. the rest has to be swept back to the drain again, if it was set below ground level then the water wouldn't run off it so much.

 

[DogsBody]

Fingers crossed then eh.

Another question, what is the point of the bit of plastic on the right hand side, it has no holes in it so I really don't see it serving a purpose, surely it should be grated like the left hand side is.

Are the hoppers a universal height ?
I am thinking if I have no room to trim it perhaps I could buy a different brand which is slightly lower.



If I lower it by 12mm as you have suggested it looks to me like the best think to do would then be to trim the slabs back a few mm and tidy up the edges with a bit of mortar. Or is that a bad idea ?

 

[DogsBody]

Nightglow, you are the man

Pretty much every question I ask in here you have the answer for it.

Coming soon, teach me about decking and laying patio

 

[DogsBody]

If you can't lower the hopper, you'll will need lower the complete gully, so lift a few more pavers, & see what fall you have on the pipe, if sufficient, cut the pipe anything up to about 1mtr from the gully (depends on fall) may need to lift more pavers & cut further back, & use a shallow bend to lower the pipe to the gully.

When your lower a gully, you don't need to be a drastic fall, just enough to run freely.

Might get away with a ordinary bend, but I prefer to use a adjustable bend, as it gives you adjustment from 0- 30 degrees.

http://www.toolstation.com/shop/p73512

http://www.toolstation.com/shop/p83548

EDIT: I'm 99.9% sure the pipe will be plastic, if patio was laid by previous owner, but there a outside chance they connected on to a existing clay drainage pipe, but we will solve that problem if it arises.

Tis a new build, I can see that the gully is plastic, I don't know 100% but am faily sure all the drainage will be plastic with it being a new build, I can't say I ever saw any clay pipes whilst property was being built anyway

Don't be hogging Nightglow, he's my diy hero too!!! His help was invaluable when sorting out parking grid for my front garden, and he's been able to answer all my questions on other diy related things too.

We'll have to do a joint thread on decking at some point so all the answers to our questions can be in once place!!!

heh heh heh