Page 135 - GRIHA Manual Volume IV - Introduction to National Rating System
P. 135
126 Griha Manual: Volume 4
1. Complete prohibition of smoking on the building premises
Most recommended strategy is to impose a ban on smoking within the building premises.
A policy regarding the same can be formulated and implemented by the building owner or
operator (as applicable).
2. Provision of designated smoking zones with controlled environment
In buildings where prohibiting smoking is not a feasible option, other strategies like
segregation of smoking area, creating pressure difference between smoking and non-
smoking areas, and dilution of contaminated air should be implemented.
Following is a brief description of these strategies listed separately for air-conditioned and non-air-
conditioned areas.
Air-conditioned areas
a. Segregation
i. Specific area in the building should be designated as smoking zone. It should be ensured
that tobacco smoking is done in no other area within the building premises other than
the designated areas.
ii. The internal space should be planned such that the designated smoking zone is located
on the building periphery.
iii. Smoking zone should be segregated from the non-smoking areas by full height
impermeable partitions and doors equipped with automatic closing mechanisms.
iv. The HVAC system should be designed such that the designated smoking area is
independent of the non-smoking area in the building.
v. Appropriate signage with legible letter size should be posted outside designated
smoking zones informing that the area may contain environmental tobacco smoke.
b. Pressurization
i. To curb any movement of contaminated air from the smoking zone to non-smoking
areas, it should be ensured that the smoking zone operates at a negative pressure in
comparison with the surrounding non-smoking areas.
c. Exhaust system
i. The contaminated air from the smoking zone should be exhausted directly to the
outdoors. It should be ensured that there is no recirculation of this air contaminated
with tobacco smoke, to the non-smoking zones of the building.
d. Dilution
i. Ventilation system of the smoking zone should be separate from that of the non-
smoking areas. To maintain the required indoor air quality standards in the smoking
zones, the smoking zones should have higher ventilation rates than non-smoking areas
and should be designed for at least 60 cubic feet per minute per person.
1. Complete prohibition of smoking on the building premises
Most recommended strategy is to impose a ban on smoking within the building premises.
A policy regarding the same can be formulated and implemented by the building owner or
operator (as applicable).
2. Provision of designated smoking zones with controlled environment
In buildings where prohibiting smoking is not a feasible option, other strategies like
segregation of smoking area, creating pressure difference between smoking and non-
smoking areas, and dilution of contaminated air should be implemented.
Following is a brief description of these strategies listed separately for air-conditioned and non-air-
conditioned areas.
Air-conditioned areas
a. Segregation
i. Specific area in the building should be designated as smoking zone. It should be ensured
that tobacco smoking is done in no other area within the building premises other than
the designated areas.
ii. The internal space should be planned such that the designated smoking zone is located
on the building periphery.
iii. Smoking zone should be segregated from the non-smoking areas by full height
impermeable partitions and doors equipped with automatic closing mechanisms.
iv. The HVAC system should be designed such that the designated smoking area is
independent of the non-smoking area in the building.
v. Appropriate signage with legible letter size should be posted outside designated
smoking zones informing that the area may contain environmental tobacco smoke.
b. Pressurization
i. To curb any movement of contaminated air from the smoking zone to non-smoking
areas, it should be ensured that the smoking zone operates at a negative pressure in
comparison with the surrounding non-smoking areas.
c. Exhaust system
i. The contaminated air from the smoking zone should be exhausted directly to the
outdoors. It should be ensured that there is no recirculation of this air contaminated
with tobacco smoke, to the non-smoking zones of the building.
d. Dilution
i. Ventilation system of the smoking zone should be separate from that of the non-
smoking areas. To maintain the required indoor air quality standards in the smoking
zones, the smoking zones should have higher ventilation rates than non-smoking areas
and should be designed for at least 60 cubic feet per minute per person.
