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Creating a Healthier and Safer Environment
WILL PERKINS
GROUP MANAGING DIRECTOR
Creating a Healthier and Safer Environment
Hot Corridors?
Automatic measures to improve safety
and comfort in apartment blocks
Creating a Healthier and Safer Environment
Why Smoke Ventilation?
Creating a Healthier and Safer Environment
Why Smoke Ventilation?
Creating a Healthier and Safer Environment
Planning and Design
BS 9991, 8519, 7346 – 8
Guidance on Smoke
Control to Common
Escape Routes in
Apartment Buildings
(Flats and Maisonettes)
CONSTRUCTION PRODUCTS
REGULATION
Planning and Design
Provision of Adequate
Ventilation Conservation of Energy
Land Locked Corridors Overheat
Circulation
AOV
Lift Stair Well
Land Locked Corridors Overheat
Land Locked Corridors Overheat
Land Locked Corridors Overheat
Creating a Healthier and Safer Environment
Controlled Ventilation…….
Hot Corridors – Land locked
Circulation
AO
V
LiftStair Well
Hot Corridors – Natural Ventilation
Circulation
AO
V
LiftStair Well
Natural Ventilation - Basics
Night Time Purge
Typical Corridor
Circulation
AO
V
LiftStair Well
Typical internal corridor
How Natural Ventilation might work
How Natural Ventilation might work
Stairwell
Smoke shaft
Corridor
How Natural Ventilation might work
Cool external air enters the stairwell
The air moves into the corridor
Heat from the corridor becomes entrained
Warm stale air exits through the smoke shaft
Creating a Healthier and Safer Environment
Planning and Design
Creating a Healthier and Safer Environment
Planning and Design
Creating a Healthier and Safer Environment
Planning and Design
Planning and Design
Smoke Shaft 1 Smoke Shaft 2
Planning and Design
Stairwell Smoke Shaft
Equipment:Smoke Shaft Doors
Creating a Healthier and Safer Environment
Equipment: Smoke Shaft Dampers
Equipment: Façade AOVs
Creating a Healthier and Safer Environment
Equipment: Fan Sets
Creating a Healthier and Safer Environment
Equipment: Roof Mounted AOVs
Creating a Healthier and Safer Environment
Equipment: Controls for Smoke
Creating a Healthier and Safer Environment
Control Considerations
Equipment: Environmental Control
• Control Natural Ventilation to deliver fresh
external air only when required.
Temperature
data logging
Thermostat
Outside air temperature
Rain Sensor
Performance
• Insert video of smoke extract in corridor here
Creating a Healthier and Safer Environment
Commissioning
Creating a Healthier and Safer Environment
Use
• Responsibility
• Testing instructions and
regularity (BS 9991)
• Management
• Log Book
• Staff Training
• BS7346 - 8
Once the building is in
use the management
regime should
be maintained. Failure to
take proper management
responsibility
may result in
prosecution.
(Regulatory Reform Order
2005)
Maintenance
Creating a Healthier and Safer Environment
What sort of performance can we expect?
Typical heat loads were
19W/m² represents heat gain from hot water pipes,
constantly on
2W/m² Heat gains from lighting
90W/person from occupant heat gain, occupancy pattern
as per National calculation methodology
Local CIBSE Design Summer Year (DSY) weather file
When is a corridor overheating?
CIBSE Guide A
Minimise Heat Gains to Reduce Risk
Reduce heat gains from lighting:
Energy efficient lighting on PIR control
Reduce solar heat gains from glazing:
Low g-value glazing
Brise Soleil
Creating a Healthier and Safer Environment
When is a corridor overheating?
CIBSE Guide A
There are problems with fixed threshold temperatures
London DSY weather file has 72 hours ≥28°C, a hot,
but not extreme summer
When is a corridor overheating?
Adaptive Comfort
When is a corridor overheating?
CIBSE TM52 BS EN 15251:2007
Adaptive Comfort
When is a corridor overheating?
CIBSE TM52 BS EN 15251:2007
Cat I – high level
expectation
Cat II – normal level
expectation
Cat III – moderate
level existing buildings
Cat IV – Only
accepted for limited
part of year
Adaptive Comfort
When is a corridor overheating?
CIBSE TM52 BS EN 15251:2007
Cat I – high level
expectation
Cat II – normal level
expectation
Cat III – moderate
level existing buildings
Cat IV – Only
accepted for limited
part of year
Adaptive Comfort
Adaptive Comfort
Adaptive Comfort
Open smoke
vent
+ open low
level vent
+ corridor
window
FAIL FAIL FAIL
CIBSE
Guide A
Results
Open smoke
vent
+ open low
level vent
+ corridor
window
Adaptive
Comfort
Pass
0%
5%
10%
15%
20%
25%
30%
GF 1st 2nd 3rd
Pe
rce
nta
ge o
f h
ou
rs o
ver
28
°C
Corridor circulation
Number of Hours, as a percentage, Dry Resultant Temperature Exceeds 28°C
1 ACH
2 ACH
4 ACH
1%
Mechanical Extract
Creating a Healthier and Safer Environment
What else can help ?
• Internal lighting to be on sensors, not switches
• LED Lighting
• Venting the vertical risers (mechanical and electrical if
required)
• Running the boiler efficiently (not high temperatures)
• Real time monitoring or 3 month download of data
Creating a Healthier and Safer Environment
THANK YOU
