Aco drainage - how to connect?

[BobAJob]

The other day I was looking at some ACO drainage channels that a patio installer installed around part of the house to keep collecting rainwater away from low lying air bricks. 

 

I noticed the installer hasn't mortared all the way around the end of each channel unit where it joins to neighbouring channel units. He has just mortared the bottom end part of each channel unit.  To me this means that the water isn't staying inside the channel and running to the drain. Instead the water is leaking away into the neighbouring ground. 

 

I'm not sure why he has done this.  Is my thinking correct?

[saveasteading]

Some of them interlock, some don't. Do you know which model yours is?

[James94]

If there the polymer ones they will interlock, I would of probably wanted a good silicone to seal each joint.

and connected to a rain water drain to take any surface water away.

James

 

[Dave Jones]

there is also a kit to connect the run to 110mm drainage

[Roundtuit]

I wouldn't worry about it; from memory, I think they have a slight lip that over-laps with the next channel.  Any slight gap will soon silt up and losses will be minimal, but you can always smear a bit of gutter sealant over the join from above if you like.  The main thing is that they are well bedded in mortar so they can't move.

[BobAJob]

Ours are Clark Drain ones. Photo attached. 

 

CD CS10.10 with metal slotted covers

 

Edited February 8, 2022 by BobAJob

[BobAJob]

Is it ok to not having mortar in the joints?