Skip to content
Light and Ventilation Regulation
NATURAL LIGHTING & VENTILATION
Building/space Type
Window to floor area
Fix Opening to floor area
Residential
not less 10%
not less 5%
School
not less 20%
not less 10%
Hospital
not less 15%
not less 7.5%
Toilet
not less 5% (adaptable based on number of wc/urinals)
There are no rows in this table
Minimum Size of Air Well
Building Height
Air Well Area (m2)
Minimum Width (m)
up to 2 storeys
7
2.5
up to 4 storeys
9
2.5
up to 6 storeys
11
2.5
up to 8 storeys
13
2.5
more than 8 storeys
15
2.5
There are no rows in this table
Minimum Size of Air Well for Toilet
Building Height
Air Well Area (m2)
Minimum Width (m)
up to 2 storeys
3.5
2
up to 4 storeys
4
2
up to 6 storeys
4.5
2
up to 8 storeys
5
2
more than 8 storeys
5.5
2
There are no rows in this table
Want to print your doc?
This is not the way.
This is not the way.
Try clicking the ⋯ next to your doc name or using a keyboard shortcut (
CtrlP
) instead.