MSVS Residential Building Diagram

Residential Building Mechanical Smoke Ventilation System Diagram

The following diagram illustrates the components and arrangement of a Mechanical Smoke Ventilation System in a residential building.

Mechanical Smoke Ventilation Systems (MSVS) are an alternative method to natural smoke ventilation, providing means of escape and firefighting access. Depending on the building design, MSVS can provide significant advantages over a natural system in terms of smoke extraction as well as both cost and space savings.

As you can see from the diagram, a Mechanical Smoke Ventilation System comprises a mechanical extract shaft that serves the common corridor and lobby. Replacement air is provided from the stairs using a pressure-controlled door closer. This action depressurises the stairs, allowing a large quantity of fresh air through the lobby meaning smoke cannot flow into the stairs.

In a Residential Building, when smoke is detected within a protected lobby, only the fire damper to the smoke shaft on the fire floor will open (all other dampers will remain locked shut). In turn, the vent at the head of the staircase will open allowing the smoke to be removed and make up air for the smoke venting system. The fan at the top of the mechanical smoke shaft extracts the smoke and prevents the migration of smoke into the adjacent compartments.

We have marked the main components of our Mechanical Smoke Ventilation System on the building diagram. Just hover over the pinpoints to learn more about that particular item and its role in Mechanical Smoke Ventilation.

For further information or to discuss the smoke ventilation requirements for your project, please call us on 01322 387411