Standing Water in Your Drain? 5 Checks Before Installing

Short answer: Standing water in drains or pipes usually comes from 5 things: an inconsistent fall, settled bedding, loose joints, no manholes to trap sediment and allow cleaning, and a drain type that does not suit the water or loads passing over it. Checking all 5 points before laying greatly reduces problems.

5 checks before laying

1. A continuous fall along the whole line — set levels according to the drawing and check every unit before backfilling; there must be no dips or reverse falls
2. Firm bedding — compact the existing soil, then bed on sand or lean concrete as per the drawing; bedding that settles later makes the drain sag and hold water
3. Tight joints — butt the drain ends or tongue joints closely and seal them, so water does not leak out and erode the base
4. Manholes at the spacing shown in the drawing — to trap sediment and allow cleaning; use manholes that match the drain type (U-Ditch and O-Gutter manholes are different)
5. Choose the right drain for the job — see the table below

Drain selection table

FAQ

Is a little water left in the drain after installation normal?

If water always ponds in places, the levels or bedding have a problem; re-check the levels.

Can U-Ditch and O-Gutter share the same manhole?

No. The manholes are different types.

Where can I get drawings?

Download them from the product pages or contact 092-224-6640 / LINE @ccp-concrete.

Further reading and orders

Related articles: U-Ditch vs O-Gutter: what is the difference · Choosing the right precast drain

Products: U-Ditch · O-Gutter · V drain · Solid manhole

Sales 092-224-6640, 085-123-8961, 081-341-1610, 085-123-7254, 086-983-8709, 061-401-2720, 090-090-4926 · LINE @ccp-concrete