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Application

Residential buildings or fire fighting shafts.

Description

ColtShaft comprises of a system of dampers, ventilators and smoke extract fans designed to protect stairs from smoke ingress in residential buildings or fire fighting shafts.


ColtShaft is designed to provide the equivalence to the BRE Shaft and hence meet the recommendations of Building Regulations (E&W) Approved Document B. The ColtShaft ventilation system offers the benefit of a much reduced footprint, providing 20% of the BRE Shaft footprint.


The ColtShaft design has been proven by extensive CFD analysis and full scale physical testing, witnessed and approved by independent consultants including the London Fire and Emergency Planning Authority.


Features and benefits:

  • Space saving - ColtShaft requires a shaft with a cross sectional area which can be as small as only 0.6 m² compared with 3 m² for the BRE shaft or 1.5 m² for a natural residential (ADB) shaft. This represents up to 80% reduction in the floor space required. (The builder’s work shaft adjacent to the lobbies is nominally 0.6 m² but needs to be selected based on individual project requirements.)
  • Enhanced performance - ColtShaft can perform better than a BRE Shaft since it extracts at a defined rate - this means that it is unaffected by external wind pressures. It is also less susceptible to obstructions to the airflow within the duct. The ColtShaft design has been proven by extensive CFD analysis and by empirical tests.
  • ColtShaft comprises of a system of dampers, ventilators and smoke extract fans designed to protect stairs from smoke ingress in residential buildings or fire fighting shafts.

General information

Color

Grey

Material

Metal

Shape

Other

Height

Bespoke

Uniclass

Ss_65_40_80_80 Smoke and heat exhaust ventilation systemsPrimary

Specification data - Smoke and heat exhaust ventilation systems

System performance

Design parameters for systems to maintain a smoke-free condition in the staircase.

Duct

Colt Seefire duct termination.

  • Ducting from shaft to external termination.
  • To be multi-compartment fire rated if passing through another compartment.
  • CE marked and certified to EN 12101-2.

Fans

-

Supply

Variable speed fans (duty and standby).

  • 8 kW nominal.
  • CE marked and Certified F300 to EN12101-3.

Extract

Smoke extract fan.

Internal extract air terminal devices

Air grilles.

External exhaust terminals

Colt Seefire stairwell ventilator.

  • Seefire ventilator at head of stairs. 
  • CE marked and certified to EN 12101-2.

Airlite louvred natural smoke vent.

Refer to manufacturer's literature.

AXS 140 AOV smoke ventilator and roof access hatch.

Refer to manufacturer's literature.

Controls

-

Control panel

Smoke and heat exhaust control panels.

Colt OPV main control panel plus mimic panel for fire service use (a central addressable panel) linked to a central MCC panel which operates the relevant supply and exhaust fans.

Damper

Motorised smoke control damper/ grille.

  • To each lobby.
  • CE Marked to EN12101-8.
  • Classification: [E60]_S_Vew_AA_i<>o_C10000_Multi.

Safety features

Fire alarm interface.

To main control panel.

Smoke detection.

To each lobby.

Sensor

Pressure sensor.

To each lobby/ corridor.

Wire

Electrical wiring.

To BS 8519:2020, Category 3.

Smoke seals

FD30S; FD60S; FD120S.

Fire door between the lobby and the accommodation is fitted with smoke seals.

Standards

To BS 7346-8.

Design, installation and commissioning to be generally in accordance with BS 7346-8.

Literature

Airlite louvred natural smoke vent

Airlite louvred natural smoke vent

Seefire natural louvred vent

Seefire natural louvred vent

AXS 140 AOV smoke ventilator and roof access hatch

AXS 140 AOV smoke ventilator and roof access hatch

Colt Smoke Control and Ventilation Systems for Multi-storey Buildings

Colt Smoke Control and Ventilation Systems for Multi-storey Buildings

CoolShaft smoke shaft system

CoolShaft smoke shaft system

Case studies

Battersea Power Station

Battersea Power Station

22 Bishopsgate

22 Bishopsgate

10 George Street

10 George Street

Bolands Quay, Dublin

Bolands Quay, Dublin

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Extended Corridor System - Exhaust shaft ventilation

Extended Corridor System - Exhaust shaft ventilation