Section 43 in Tamil Nadu Combined Development and Building Rules, 2019
43. Provisions for differently abled, elderly and children.
- In order to provide barrier free environment in the buildings and premises used by public the following should be provided. These regulations shall be applicable to all buildings and facilities used by the public such as educational, institutional, assembly, commercial, business, mercantile buildings and group housing constructed on plots having an area of more than 2000 sq.m. It shall not apply to private residential buildings.(a)Types of buildings to adopt barrier free guidelines.(i)Buildings to be designed for Ambulant Disabled People. - Higher Secondary School, Conference Hall, Dance Halls, Youth Centers, Youth Clubs, Sport Centers, Sport Pavilions, Boat Club Houses, Ice Rinks, Bowling Centers, Swimming Pools, Police Stations, Law Courts, Courts Houses, Sport Stadiums, Theaters, Concert Halls, Cinemas, Auditoria, Small Offices (the maximum plinth area 1400 sq.mt) Snack Bars, Cafes and banqueting rooms (for capacity above 50 dinners).Note. - (a) In sport stadiums provisions shall be made for non-ambulant spectators (small wheel chair)(b)@ 1:1000 up to 10,000 spectators and @ 1:2000 for spectators above 10,000.(c)In Theaters, Concert Halls, Cinemas and Auditoria provisions shall be made for non-ambulant spectators (Small Wheel Chairs) @ 1/250 up to 1000 spectators and 1/500 for spectators above 1000.(ii)Buildings to be designed for Non-Ambulant Disabled People. - Schools for differently abled and other buildings such as Residential building, Educational building, Institutional building, Assembly building, Business building, Mercantile building, Industrial building, Storage building, Hazardous building, Mixed Land use buildings, Wholesale Establishment and along with Botanical Gardens, Religious Buildings, Elderly People Clubs, Village Halls, Day Centers, Junior Training Centers, Post Offices, Banks, Dispensaries, Railway Stations, Shops, Super Markets, and Departmental Stores.Note. - Large wheel chair criteria shall be applicable on ground floors of the following building, post offices, banks, dispensaries, railway station, shops, supermarkets, and departmental stores.(iii)Buildings to be designed for Non-Ambulant People (using small wheel chairs). - Public lavatories in Tourist Sports, Clubs, Motels, Professional and Scientific Institution, Museum, Art Galleries, Public Libraries, Laborites, Universities, College for further Education, Teachers Training Colleges, Technical College, Exhibition Halls Dentist Surgeries, Administrative Department of the Hospitals, Service Stations, Car Parking,Buildings Airports Terminals, Bus Terminals, Factories.Employing differently-abled for sedentary works, Large Offices, with plinth area abode 1400 sq.mt., Tax Offices, Passport Offices, Pension Offices, and Labour Offices, Cafes, Banqueting Rooms and Snack Bars (For capacity above 100 dinners.(b)Site development. - Level of the roads, access paths and parking areas shall be described in the plan along with specification of the materials.Access Path/Walk WayAccess path from plot entry and surface parking to building entrance shall be minimum of 1800 mm wide having even surface without any steps. Slope, if any, shall not have gradient greater than 5%. Selection of floor material shall be made suitably to attract or to guide visually impaired persons (limited to coloured floor material whose colour and brightness is conspicuously different from that of the surrounding floor material or the material that emits different sound to guide visually impaired persons; hereinafter referred "o as "guiding floor material". Finishes shall have a non- slip surface with a texture traversable by a wheel chair. Kerbs wherever provided should blend to a common level.(c)Parking. - For parking of vehicles of differently-abled people, the following provisions shall apply:(i)Surface parking for two car spaces shall be provided near entrance for the physically differently-abled persons with maximum travel distance of 30m. from building entrance.(ii)The width of parking bay shall be minimum 3.6 meter.(iii)The information stating that the space is reserved for wheel chair users shall be conspicuously displayed.(iv)Guiding floor materials shall be provided or a device, which guides visually impaired persons with audible signals, or other devices, which serves the same purpose, shall be provided.(d)Building requirements - The specified facilities in buildings for persons shall be as follows:(i)Approach to plinth level. - Every building should have at least one entrance accessible to the differently abled and shall be indicated by proper signage. This entrance shall be approached through a ramp together with the stepped entry.(ii)Ramped Approach. - Ramp shall be finished with non-slip material to enter the building. Minimum width of ramp shall be 1800mm with maximum gradient 1:12. Length of ramp shall not exceed 9.0 meter having 800mm high hand rail on both sides extending 300mm beyond top and bottom of the ramp. Minimum gap from the adjacent wall to the hand rail shall be 50mm.(iii)Stepped Approach. - For stepped approach size of tread shall not be less than 300mm and maximum riser shall be 150mm. Provision of 800mm high hand rail on both sides of the stepped approach similar to the ramped approach.(iv)Exit/Entrance Door. - Minimum & clear opening of the entrance door shall be 900mm and it shall not be provided with a step that obstructs the passage of a wheel chair user. Threshold shall not be raised more than 12mm.(v)Entrance Landing. - Entrance landing shall be provided adjacent to ramp with the minimum dimension 1800mm x 2000mm. The entrance landing that adjoins the top end of a slope shall be provided with floor materials to attract the attention of visually impaired person's (limited to coloured floor material whose colour and brightness is conspicuously different from that of the surrounding floor material or the material that emits different sound to guide visually impaired persons. Finishes shall have a non-slip surface with a texture traversable by a wheel chair. Kerbs wherever provided should blend to a common level.(vi)Corridor connecting the entrance/exit for the differently abled. - The corridor connecting the entrance/exit for differently abled leading directly outdoors to a place where information concerning the overall use of the specified building can be provided to visually impaired persons either by a person or by signs, shall be provided as follows:(a)Guiding floor materials' shall be provided or device that emits sound to guide visually impaired persons.(b)The minimum width shall be 1500mm.(c)In case there is a difference of level, slope ways shall be provided with a slope of 1:12.(d)Handrails shall be provided for ramps/slope ways.(vii)Stair-ways. - One of the stair-ways - near the entrance/exit for the differently abled shall have the following provisions:(a)The minimum width shall be 1350mm.(b)Height of the riser shall not be more than 150mm and width of the tread 300mm.(c)The steps shall not have abrupt (square) nosing.(d)Maximum number of risers on a flight shall be limited to 12.(e)Handrails shall be provided on both sides and shall extend 300mm on the top and bottom of each flight of steps.(viii)Lifts. - Wherever lift is required as per bye-laws, provision of at least one lift shall be made for the wheel chair user with the following cage dimensions of lift recommended for passenger lift of 13 person's capacity of NBC 2005, BIS. Section 4.9.3 Table no1- Desirable Lift sizeClear internal width 1100mm Clear internal depth 2000mm Entrance door width 900mm(a)A hand rail not less than 600mm long at 1000mm above floor level shall be fixed adjacent to the control panel.(b)The lift lobby shall be of an inside measurement of 1800mm x 200mm or more.(c)The time of an automatically closing door should be minimum 5 seconds and the closing speed should not exceed 0.25 m/sec.(d)The interior of the cage shall be provided with a device that audibly indicates the floor, the cage has reached indicates that the door of the cage of entrance or exit is either open or closed.(e)Graphic or Braille signage, as per the Harmonized Guidelines, shall be provided in the lift lobby.(ix)Toilets. - One special W.C. in a set of toilets shall be provided for the use of differently abled with essential provision of washbasin near the entrance for the differently abled.(a)The minimum size shall be 1500mm x 1750mm.(b)Minimum clear opening of the door shall be 900mm and the door shall swing out.(c)Suitable arrangement of vertical/horizontal handrails with 50mm clearance from wall shall be made in the toilet.(d)The W.C. seat shall be 500mm from the floor.(x)Proper signage. - (a) Appropriate identification of specific facilities within a building for the differently abled persons should be done with proper signals.(b)Visually impaired persons make use of other senses such as hearing and touch to compensate for the lack of vision, whereas visual signals benefit those with hearing disabilities. Signs should be designed and located so that they are easily legible by using suitable letter size (not less than 20 mm high).(c)For visually impaired persons, information board in brail should be installed on the wall at a suitable height and it should be possible to approach them closely.(d)To ensure safe walking, there should not be any protruding sign which creates obstruction in walking.(e)Public Address System may also be provided in busy public areas.(f)The symbols/information should be in contrasting colour and properly illuminated because people with limited vision may be able to differentiate amongst primary colours.(g)International Symbol Mark for wheel chair be installed in a lift, toilet, staircase, parking areas, etc., that have been provided for the differently abled.
