Architects Datafile (ADF) – August 2019

including drainage. Understandably,

customers want to create a certain

appearance for their homes: one that

showcases premium quality. Pushing for a

specification of a grating element with the

right aesthetic can add a subtle yet

important touch to a project.

For example, some customers want

drainage systems to be subtle and barely

noticeable. These systems are inserted

seamlessly between brickwork to provide a

clean and contemporary finish.

If a bold finish is desired, architects could

use grated channels to make a feature of the

drainage through mosaic, slotted or

lightening gratings. Drainage made from

stainless steel, cast iron, aluminium or

composite, can also enhance a bold finish.

It is important to consider maintenance

and placing access units in a channel run.

Most drainage systems are designed for

easy jet-wash maintenance but the more

discreet drainage options require thought

about the placement of access units.

Complete the look

When planning and drawing the design of a

new housing project, there are a number of

drainage channels which help complete the

look, from contemporary stainless steel to

antique cast iron, meaning the finish can

replicate the initial designs.

There may be some reservations about

utilising aesthetically pleasing systems, in

case they do not provide the appropriate

functionality of what is expected. To caveat

this, architects should ensure that any

drainage channels that are recommended to

fit with the design have the appropriate

load class requirements. There are load

classes that architects should look out for

in a new housing project (namely B 125 and

A 15). B 125 rated systems should be

installed for private car parks or areas

where domestic vehicles will be present.

For other areas of the house, such as patios

and garage thresholds, A 15 rated drainage

is sufficient.

Final thoughts

As well as playing an integral role of the

surrounding infrastructure of a building,

drainage can also play its part in the design

and should therefore be carefully

considered by architects. As a final note,

grating visualiser tools are available from

some water management specialists on the

many different options available.

William Poynter is design service advisor at

ACO Water Management

© Will Allen

© Will Allen

46GROUNDWORKS & DRAINAGE

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