Page 146 - GRIHA Manual Volume IV - Introduction to National Rating System
P. 146
Building planning and construction 137



14. Warning Signals
a. Audible warning signals shall be accompanied by simultaneous visual signals for the beneit of those with hearing
disabilities.
b. Visual signals shall be accompanied by simultaneous audible signals for the beneit of the blind. To assist blind people,
lettering and symbols on signs should be in relief for tactile reading.
c. Signs should be designed and located so that they are easy to read. For visually impaired people, signs should preferably
be at the eye level and it should be possible to approach them closely. Text and symbols should be colour-contrasted with
the background. The letters should not be less than 12 mm high.
d. Signs should be well illuminated and surfaces should not cause mirroring or relections. Signs should not be behind glass
or similar materials.
e. Information based on colour codes should be avoided; colourblind people may ind it dificult to them.
15. Work Bench
a. This should be at least 800 mm wide, 600 mm deep, and 650 mm–700 mm high. For wheelchair users, the convenient
height of work tops is between 750 mm and 850 mm; lexible provision is preferred. Further, for wheelchair access to a
work bench, wash basin or table, a clear space for knees and footrests is needed.
16. Hazards
Every effort shall be made to obviate hazards to individuals with physical disabilities.
a. Access panels or manholes on loors, walks, and walls may be extremely hazardous, particularly when in use, and should
be avoided.
b. When manholes or access panels are open and in use, or when open excavation exists on a site, particularly when it is
in proximity of normal pedestrian trafic, barricades shall be placed on all open sides, at least 8.5 m from the hazard, and
warning devices shall be installed in accordance with Section 14.b.above.
c. Low-hanging door closers that remain within the opening of a doorway, when the door is open or that protrude hazardously
into regular corridors or trafic ways when the door is closed, shall be avoided.
d. Low-hanging signs, ceiling heights, and similar objects or signs and ixtures that protrude into regular corridors or trafic
way shall be avoided.
e. A minimum height of 2.1 m measured from the loor is recommended.
f. Ramps shall be adequately lighted.
g. Exit signs shall be in accordance with good practices.
h. Equipment and materials causing allergic reactions should be, as far as possible, avoided in dwelling and buildings.
Source National Building Code - 2005, Annexure D

In addition to the above design recommendations as per the National Building Code of India 2005
Annexure D (Clause 12.21), following are few more guidelines recommended for design of sanitary
facilities.

Accessible unisex sanitary facilities allow persons with disabilities to be assisted by carers of the opposite gender. Therefore, it is
essential that at least one unisex accessible sanitary facility be available on the principle loor. In addition, in public buildings such as
Malls, Hospitals, Museums, and so on and in larger buildings such as multi-storey ofices there should be unisex accessible facilities on
all loors. Apart from this, all toilet blocks must have one cubicle suitable for use by persons with ambulatory disabilities.

Source: A document on ‘Special Requirements for Planning of Public Buildings for Inclusion of Persons with Disabilities’ compiled by ‘AccessAbility’, a
Universal Design and Disability Employment Specialist.

Recommended number of toilets for disabled as per the National Building Code of India 2005, Part 9: Plumbing
Services-Section 1 Water Supply, Drainage and Sanitation, Clause 5.2.5.1 Table 22.
Junction stations, Intermediate Terminal railways and Bus stations Domestic and international airports
stations and Bus stations
Males Females Males Females Males Females
Toilet for 1 per 4000 1 per 4000 1 per 4000 1 per 4000 1 per 4000 1 per 4000
disabled (Minimum) (Minimum)
   141   142   143   144   145   146   147   148   149   150   151