GREEN TIPS
Stairs in shopping malls and shop spaces
Tread size in shopping malls and shop spaces
Stairs serving the purpose of shopping mall circulation need to be less
steep than the usual fire escape stair. As a rule of thumb for optimum
results, tread rise should not be more than 150mm and the shallowest
tread depth not less than 300mm. A resting landing should intervene
when the number of treads exceeds more than 15 but preferably at 8 to
10 depending on the space available.
Figure 67 Tread size
4.2
Natural ventilation for shopping malls and shop spaces
Naturally ventilated malls imply that the central spaces, managed by the landlord, use natural or hybrid ventilation
methods. This system is cost-effective and more sustainable while also maintaining a healthy, comfortable indoor
environment. The shops operate off a separate system that provides mechanically cooled or heated air, generally
controlled by the tenant. The shops can aid the thermal comfort level of the main space due to the general open-door
policy of the shops during shopping hours.
There are some fundamental aspects of natural ventilation for shopping malls that are worth noting.
4.2.1 Stack effect
4
Green design for shopping malls and shop spaces
4.2
Natural ventilation for shopping malls and shop spaces
Figure 68 Hot air rising and gathering with no escape
Figure 69 Ventilated skylight for hot air escape
Heat build-up from
poor ventilation
Sustainable natural ventilation
design method
Hong Kong Green Building Council 101
