Linear drainage allows you to quickly get rid of water from flat surfaces on your property. The simple and quick-to-install construction will keep the yard area stable or protect the house foundations from rainwater. One important component of drainage is yard drains. What are yard drains for and how do they work? You will read about this in today's article.

Linear drainage around the house

The linear dewatering system of a building consists primarily of linear gutters equipped with gratings that are designed to catch and carry away rainwater from impermeable flat surfaces such as pavements, driveways or car parks. Linear dewatering gutters are laid in places that are particularly prone to rainwater retention and accumulation, such as depressions in the ground. The gutter drains into the rainwater or combined sewer system. And also to infiltration systems or green areas. We have already written about how drainage works previously. A linear drainage system can also support the guttering system of a building, especially in situations where it is not possible to connect the gutters to the drainage system.

Backyard manholes - what are they?

Yard well is used for collecting and draining rainwater from linear drainage systems or from gutters. It can also be used as a point drain, for example in a localised depression in the ground or under the outlet of an old gutter or under a tap. A backyard manhole has a sealed body equipped with connection ports for draining the collected rainwater to the downstream system. It can have a full cover or a gully grate. In addition, some models have a basket. This allows dirt to be captured.

The courtyard manholes available in our range have bodies made of plastic. There are models with plastic grates of strength class A15 (pedestrian and bicycle traffic), as well as those with cast iron grates withstanding passenger car traffic (class C250). Some models have spigots for connection to linear drainage channels.

Where yard manholes are used?

Yard manholes are most commonly used as a stand-alone drain, a gutter receiver or a connection between a linear drainage system and a sewer or drain.

A yard sump can act as a stand-alone gully collecting water from the surface and returning it to the rainwater collector. This is the case when it is necessary to collect water from a point depression in the area or if there is not enough space to use a linear drainage system,

A yard sump is also used if you have fixed points from which water must be drained. For example, gutter ends or taps. If it is not possible to connect the existing gutters to the drainage system, a sump with a grate can be placed under the end of the gutter. This will allow water flowing out of the gutters to be intercepted without spilling over impermeable surfaces. It will work similarly under a garden tap.

Yard sumps are often combined with linear drainage systems. In such situations, the water from the gutters is discharged into the manhole and then from the yard sump into the downstream system.

When selecting a manhole for a linear drainage system, we need to make sure that the gutters chosen will be compatible with the manhole. Yard manholes and linear drainage gutters may not match if they are systems from different manufacturers. Some manholes may require additional components (e.g. Plastic Extension for manhole 300×300 H12mm) in order to be connected to the linear dewatering unit.

Backyard manholes - advantages

The manhole can be equipped with the following elements to support water purification: a grate, a basket with a screen and a manhole body. The purpose of the grate is to catch leaves, needles, rubbish and other larger objects that run off with the rainwater. This is because they can clog up the rainwater drainage system. The body of the settling tank is equipped with drainage spigots that are positioned above the level of the sump bottom. In this way, the space below the drain acts as a settling tank, which will retain dust, sand and other fractions heavier than water. In addition, some manholes are equipped with a basket with a sieve. Such a basket usually acts as both a sieve and an auxiliary settling tank. This means that it retains light debris such as leaves and needles that have passed through the manhole grate, as well as sand and dust that will settle in the basket below the screen holes. The sump should be cleaned periodically to ensure proper operation. If the manhole or screen overflows with debris, the rainwater treatment effect of the manhole will be lost.

A yard sump is an extremely useful component. It can act both as a component of the property's linear drainage system and as a stand-alone gully. It allows quick and trouble-free removal of rainwater, is simple to install and operate and brings significant benefits to users.