1. Interactive
Source:
Fire Statistics Great Britain,
“Providing Engineered & Code Compliant Smoke Control Solutions” with systems partner

2. Interactive
Source:
Fire Statistics Great Britain,
“Providing Engineered & Code Compliant Smoke Control Solutions” with systems partner

3. Fires can produce a lot of smoke
Interactive
Fires can produce a lot of smoke
“Providing Engineered & Code Compliant Smoke Control Solutions” with systems partner

4. Requirement for smoke ventilation
Interactive
Requirement for smoke ventilation
“Providing Engineered & Code Compliant Smoke Control Solutions” with systems partner

5. Natural smoke ventilation
Interactive
Natural smoke ventilation
Residential buildings not classed as ‘Small Single Stair Buildings’
Source: Building Regulations 2000, Approved Document B – 2006 edition
With this being such a complex topic we’ll just cover the basics and look at a couple of examples.
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6. Methods of smoke control
Interactive
Methods of smoke control
Natural
Mechanical
Direct to outside
Pressurisation
Using a smoke shaft
Depressurisation
“Providing Engineered & Code Compliant Smoke Control Solutions” with systems partner

7. Natural smoke ventilation
Interactive
Natural smoke ventilation
Direct to outside
1.5 square meter ventilator to an external façade/roof
Top of the ventilator to be positioned at least as high as the top of the door to the stair
1.0 square meter ventilator located at the head of the stair
“Providing Engineered & Code Compliant Smoke Control Solutions” with systems partner

8. Natural smoke ventilation
Interactive
Natural smoke ventilation
Using a smoke shaft
1.0 square meter ventilator opening into a 1.5 square meter smoke shaft
Top of the ventilator to be positioned at least as high as the top of the door to the stair
Smoke shaft should be vertical from base to head
1.0 square meter (minimum) ventilator located at the head of the shaft
Smoke shaft to extend 2.5m higher that the ceiling of the upper most storey served
1.0 square meter ventilator located at the head of the stair
“Providing Engineered & Code Compliant Smoke Control Solutions” with systems partner

9. Mechanical smoke control
Interactive
Mechanical smoke control
Pressurisation
Designed, installed and commissioned to British Standard BS EN :2005
Class A system – means of escape. Defend in place
To maintain a pressure within the stair of 50Pa (with all doors closed)
To provide an open door velocity of 0.75 meters per second through the stair door on the fire floor (all other doors closed)
“Providing Engineered & Code Compliant Smoke Control Solutions” with systems partner

10. Mechanical smoke control
Interactive
Mechanical smoke control
Depressurisation
Designed, installed and commissioned to British Standard BS EN :2005
Class A system – means of escape. Defend in place
To achieve a pressure difference of 50Pa between the corridor/lobby and the stair
To provide an open door velocity of 0.75 meters per second through the stair door on the fire floor (all other doors closed)
“Providing Engineered & Code Compliant Smoke Control Solutions” with systems partner

11. Natural forces in smoke control
Interactive
Natural forces in smoke control
Buoyancy – stack effect
“Providing Engineered & Code Compliant Smoke Control Solutions” with systems partner

12. Natural forces in smoke control
Interactive
Natural forces in smoke control
Wind effects – negative/positive pressure
“Providing Engineered & Code Compliant Smoke Control Solutions” with systems partner

13. Natural forces in smoke control
Interactive
Natural forces in smoke control
Wind effects – negative/positive pressure
“Providing Engineered & Code Compliant Smoke Control Solutions” with systems partner

14. The mechanical advantage in smoke control
Interactive
The mechanical advantage in smoke control
Predetermined extract rate
Not affected by wind – Negative/Positive Pressure
Reliability – 100%?
“Providing Engineered & Code Compliant Smoke Control Solutions” with systems partner

15. Regulatory Reform (Fire Safety) Order 2005?
Interactive
Regulatory Reform (Fire Safety) Order 2005?
Who is responsible for meeting the order?
Under the order, anyone who has control of premises or anyone who has a degree of control over certain areas or systems may be a ‘responsible person’.
Fire authorities no longer issue fire certificates and those previously in force will have no legal status.
Enforcing the order
Fire authorities will be the main agency responsible for enforcing all fire-safety legislation in non-domestic premises including common parts of blocks of flats. If there is a very serious risk to life, the fire authority can issue a notice preventing the premises being used for certain things (such as sleeping), or preventing people from using all or part of the premises. This power is shared with housing authorities in properties which several households live in.
“Providing Engineered & Code Compliant Smoke Control Solutions” with systems partner

16. “If a fire broke out could the occupants escape safely?”
Interactive
Is it safe?
To ensure that a building is safe to be occupied is not always easy, regulations and guidance change. However the basic principal applies –
“If a fire broke out could the occupants escape safely?”
The Interactive ‘SmokEvac’ system provides a safe and simple method of protecting the primary egress route.
“Providing Engineered & Code Compliant Smoke Control Solutions” with systems partner

17. ‘SmokEvac’ – residential stair pressurisation system
Interactive
‘SmokEvac’ – residential stair pressurisation system
“Providing Engineered & Code Compliant Smoke Control Solutions” with systems partner

18. “There’s so much smoke in here....we can’t get out”
Interactive
“There’s so much smoke in here....we can’t get out”
Mail on Sunday – 5th July 2009
“Providing Engineered & Code Compliant Smoke Control Solutions” with systems partner