BS 7346-7:2013

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Smoke and heat control system selection
5 Design fires
6 Vehicle exhaust pollution control
7 Natural dispersal smoke ventilation
8 Ducted mechanical extract for smoke clearance
9 Impulse ventilation to achieve smoke clearance
10 Impulse ventilation to assist fire-fighting access
11 Impulse ventilation to protect means of escape
12 Smoke and heat exhaust ventilation systems (SHEVS)
13 Smoke control duct sections and smoke control dampers
14 Controls and power supplies
15 Pre-installation verification
16 Interaction with other fire protection systems and other
   building systems
17 Commissioning
18 Documentation to be supplied with smoke and heat
   control system
19 Maintenance and safety
Annexes
Annex A (normative) - Smoke control duct sections and
        smoke control dampers
Annex B (normative) - Computer-based models
Annex C (informative) - Lighting, signage, public address
        and voice alarm systems
Bibliography

Provides guidance on functional recommendations and calculation methods for smoke and heat control systems for covered parking areas for cars and light commercial vehicles.

This part of BS7346 gives guidance on functional recommendations and calculation methods for smoke and heat control systems for covered parking areas for cars and light commercial vehicles.

NOTE1 It is assumed that cars powered by fuels other than petrol or diesel will have a fire performance similar to vehicles powered by petrol or diesel. This assumption might be revised in a future edition of this standard if further information suggests it is necessary.

It is intended for system designers, installers of systems, regulatory authorities, for example building control officers and fire safety officers, and those who manage the fire safety of car parks.

It gives recommendations for systems designed for open-sided car parks and for enclosed car parks. It covers:

• systems intended to protect means of escape for occupants of the car park or the building housing the car park;

• systems intended to assist active fire-fighting operations; and

• systems intended to provide smoke clearance following suppression of a fire.

It includes recommendations for natural open-sided ventilation and for ducted mechanical ventilation. It includes guidance on performance-based smoke control using impulse ventilation systems and smoke and heat exhaust ventilation systems (SHEVS). Time-dependent and steady-state design methods are included as appropriate for each smoke control approach. Control of vehicle pollutant emissions is included where it influences the optimization of smoke control. Following the BRE fire tests on car stacker systems, it also includes recommendations for fire sizes and fire suppression in these types of installations.

Smoke and heat control systems for loading bays and coach parks are not covered by this standard.

NOTE2 Guidance on loading bays and coach parks can be found in the FETA publication, Design of smoke ventilation systems for loading bays and coach parks – a guide for system designers [5].