System Information

Mechanical Smoke Ventilation Systems

What they are, how they work and where you can use them.
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How depressurisation systems work.
Stage 1
A signal is received from the fire alarm system.
Stage 2
Head of stair vent and shaft dampers on the floor of origin open. Dampers on all other floors remain shut
Stage 3
The mechanical extract pod fires up and begins extracting smoke from the fire zone, drawing fresh air down the stair core.

Systems will vary depending on building layout.

Where you can use them.
Mechanical systems are perfectly suited to some buildings, here’s why:
Very tall buildings

Where a building is so tall that there’s a risk of smoke-logging, rendering a natural system ineffective, a mechanical system can be considered.

Extended corridors

If your building has extended corridors, you’ll need a mechanical system.

You’re tight for space

Mechanical systems can perform with much smaller shaft sizes, typically between 0.6m2 and 0.8m2.

There’s a CPD for that.

If you want to learn more about mechanical systems, including where they’re applicable, how to specify them, what products to use, what legislation governs them, we’ve got a comprehensive CPD to help you out.

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Products used in mechanical systems
Roof Mechanical Pod - Residential | Smoke & Environmental (RMP-R | SE)
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Roof Mechanical Pod - Residential | Environmental (RMP-R | E)
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Roof Single Leaf - Residential (RSL-R)
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Roof Mechanical Pod - Residential | Air Inlet (RMP-R | AI)
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Shaft Louvre Damper - Residential (SLD-R)
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Addressable Control Panel (CNS-R | ACP)
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Roof Mechanical Pod - Residential | Transition Ductwork (RMP-R | TD)
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Examples of our mechanical projects.
Take a look at some case studies to learn how mechanical systems work in practice.
Technical Specifications
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Technical Specs
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