APPENDIX

A P P E N D I X

PROPOSED   STANDARDS   FOR   DISPOSAL OF EFFLUENT   INTO   RIVER   OR NEARBY CREEKS:

25 APPLICABILITY OF REGULATIONS

25.1These Regulations except Regulation No.26 apply to all new constructions to be carried out and shall also apply to any additions or alterations that may be   made in   any existing   constructions   and also in case of change of use  in  existing building. The Regulation No.26 shall apply  to existing buildings.

25.2A  person shall be deemed to do or omit or fail to  do  any act or thing who does or omits or fails to do such act or thing  either  in  the  capacity  of an  owner,  agent  of  an  owner, contractor, agent of a contractor, builder, agent  of  a  builder,  structural-designer,  architect  or  engineer,  ,  Clerk   of   Works  or  person-in-charge  of  any building operation.

25.3 Addition  or  extension  to  a  buildingNo   addition   or extension  to a building shall be allowed unless  the  addition or  extension  is such as would be permissible   if   the   whole building   were   reconstructed   from the plinth   with   the   open   spaces   required under the Regulations applicable  to the  site of the building at the time of the proposed  addition  or  extension and no addition or extension to a building  shall be  allowed which would diminish the extent of air space  below the  minimum  which  is required  by  the     Regulations applicable  to  the  site of the building at the  time  of the  proposed addition or extension.

Safe guard against Reduction of open spaces :

No  construction  work on a building shall be allowed  if  such work  operates  to  reduce  an open  air  space  of any  other adjoining  building  belonging to the same owner to  an  extent  less  than what is prescribed by any of the   Regulation in force at the time of the proposed work or to further   reduce such open space if it is already less than what is prescribed.

25.4 Open  space to be open to Sky :

Every open   space,   whether exterior or interior or a set-back  provided  in  pursuance  of  any   Regulation,   or under an agreement  lodged  with  the Authority  shall  be  paved and be always kept  free  from any erection thereon and open to the sky, except 23 cms. cornice or 30 cms. eave or grill with opening not less than 8 X 8 cms. and no weather shade or other protection shall overhang or   project over   the  said open space or over a side set-back  so  as  to reduce the width to less than the minimum provided under  these Regulations. No open drain except for rain-water shall be  free  structure  in  any  open space required  by  these Regulations.

26 MAINTENANCE OF BUILDINGS

26.1 1)For the purpose of these Regulation, the building shall be divided into the following classes:

Class-1:  All  types  of   framed   structures,       factory buildings, cinema, auditorium and other public buildings, schools and college buildings, hostels.

Class-2:  Masonary  walled  residential      buildings constructed with more than ground + two floors.

2)It shall be the duty of the owner of a building to get his building examined by a registered structural designer at the interval  of  time prescribed hereunder and  to  submit  a structural  inspection  report  to  the Authority in the Form No.11.

3)The interval at which such buildings are to be examined and a report submitted to Authority shall be as under:

a)Within three years from the coming into force of these Regulation and thereafter at the interval of every fifteen years from the date of submission of the first report for Class-I buildings which are erected fifteen years earlier from the date on which these Regulations has come into force or which becomes five years old thereafter.

b)Within five years from the coming into force of these Regulation and thereafter at the interval of every fifteen years from the date of submission of the first report for Class-II buildings which are erected fifteen years earlier from the date on which these Regulation has come into force or which become fifteen years old thereafter.

26.2 It shall be the duty of every owner to maintain and keep in working order the arrangement of internal fire hydrants, fire-lifts and fire-stair provided in his building. At intervals of not more than twelve months he shall submit a certificate from the Fire Department or Fire Consultant registered with appropriate authority certifying that the system of internal fire hydrant, fire lifts & fire stairs and other protections required are properly maintained and is in good working conditions.

27  RELAXATION

27.1In   the case of plot owned by : i) Competent    Authority, ii)Government,   iii)Housing   Board, and iv)any corporate   body  constituted   under  a  statute,  the  competent  authority  may  for  reasons   to  be  recorded  in writing relax or waive any of the regulations in the public interest. Provided  that  no  relaxation or waive of any  of  the development regulations concerning maximum built-up-area on any floor,  common  plot, COP,marginal open space, provisions  of  high  rise buildings, F.S.I. and parking shall be made, unless specifically provided in these Regulations.

27.2 Notwithstanding anything contained in foregoing Regulations of the Development Plan in case where these regulations    cause hardships to the owners because of their application    to   the alterations   not involving addition  to  the  existing    structures  erected    prior  to  the  coming  into  force  of    these    regulations,  the Competent Authority after considering the merits of each  individual case may relax or waive, for reasons to be recorded in  writing and regulation of the Development Plan.Provided  that this relaxation shall not be made  in  any regulations for high rise building.

27.3In  the  case  of  existing  building  units  in  respect  of   which  the   layout  and  sub-division  may  have  been approved by  a  competent Authority  or building units affected by road widening  and  by the Development Plan  proposals  made  in  the  Development  Plan,  if   the   Competent  Authority  is  of  the  opinion  that  such building units  have  become incapable of reasonable development unless all or any of the  requirements  of Regulations Nos.11  &  12  are  suitably  relaxed or waived the Competent Authority may, for reasons to be recorded in  writing,  relax  the requirement  of  the  above  mentioned regulations.

Provided   that no relaxation shall be made in any of   the regulations for high rise buildings. Irrespective of provisions made in sub clause 27.1, 27.2 & 27.3, in case of development for religious  building, e.g. temple, church,  Mosque,   Agiari   etc.  up  to   0.6   or  less  F.S.I.  only.  Competent     Authority   may  waive  special provisions for high rise building with reasons to be recorded. Provided  that  no  relaxation or waiver in  anyof  the regulations concern in margin, parking, open space, common plot and maximum built-up area shall be made.

28 TO PROVIDE FACILITIES FOR PHYSICALLY HANDICAPPED PERSONS

28.1  SHORT TITLE, EXTENT & COMMENCEMENT

28.1.1These regulations shall apply to the buildings of Physically handicapped persons.

28.1.2They  shall  extend to the whole  of Ahmedabad  Urban  Development  Authority Area.

28.2 DEFINITIONS

28.2.1   Non - ambulatory Disabilities Impairments that regardless of cause   or   manifestation, for   all   practical   purposes confine individuals to wheel- chairs.

28.2.2  Semi-ambulatory DisabilitiesImpairments  that  cause  individuals    to  walk  with  difficulty  or  insecurity.  Individuals    using  braces    or crutches, amputees arthritics, spastics,  and  those with pulmonary and cardiac ills may be semi- ambulatory.

28.2.3  Hearing  Disabilities Deafness or  hearing  handicaps  that might  make an individual insecure in, public areas because  he is unable to communicate or hear warning signals.

28.2.4  Sight Disabilities Total blindness or impairments  affecting sight  to the extent that the individual functioning in  public areas is insecure or exposed to danger.

28.2.5  Wheel Chair Chair used by Disabled people for mobility.  The standard size of wheel chair shall be taken as 1050x750 mm.

28.3 SCOPE

These  regulations  are  applicable  to  all  buildings  and  facilities  used   by   the   public.  It  does  not  apply  to private  &  public  residences.

28.4SITE DEVELOPMENT

Level  of  the roads, access paths and parking areas  shall  be described  in the plan along with specification of the  materials.

28.4.1Access Path / Walk Way:

Access path from the entry and surface  parking  to Building entrance shall be minimum   of   1800mm. 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  emit  different sound to guide visually impaired persons here in after referred to as  "guiding  floor  material"(regulation  no.28.6)”.Finishes  shall    have  a    non    slip    surface  with  a  texture traversable  by  a   wheel chair. Curbs wherever provided should blend to a common level.

28.4.2 Parking:

For  parking of vehicles of handicapped  people  the following provisions shall be made:

a) Surface   parking   for two car Spaces   shall   be   provided near entrance for the physically   handicapped persons with  maximum  travel distance of 30 Mts. from  building .

b) The width of parking bay shall be minimum 3.60 metre.

c) The information stating that the space is reserved for  wheel chair users shall be conspicuously displayed.

d) 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.

28.5BUILDING REQUIREMENTS

The specified facilities for the building for physically handicapped persons shall be as follows.

1. Approach to plinth level.

2. Corridor   connecting   the   entrance/   exit   for   the   handicapped.

3. Stair- ways.

4. Lift.

5. Toilet.

6. Drinking water.

28.5.1Approach  to plinth level:

Every building should have at   least one entrance   accessible to the handicapped and shall be   indicated   by proper signage. This entrance  shall  be  approached through a ramp together with the stepped entry.

28.5.1.(A)Ramped Approach:

Ramp shall be finished with non slip material to enter the building minimum width of ramp shall be 1800 mm. with maximum gradient 1:12, length of ramp shall  not exceed 9.0 Mts. having 800 mm high hand rail on both sides extending 300 mm. beyond top and bottom of the ramp. .Minimum gap   from the adjacent wall to the hand rail shall be 50 mm.

28.5.1.(B)Stepped Approach:

For stepped approach size of tread shall not be less than 300 mm. and maximum riser shall be 150 mm. Provision  of  800  mm.  high  hand  rail  on  both  sides    of    the  stepped  approach  similar  to  the  ramped approach.

28.5.1.(C)Exit / Entrance Door

Minimum clear opening of the entrance  door shall be 900 mm. 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 12 mm.

28.5.1.(D) Entrance Landing:

Entrance landing shall be providing adjacent to ramp with the minimum dimension 1800x2000 mm.  The entrance  landing that adjoin the top end of a slope  shall  be provided  with  floor  materials to attract  the attention  of 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 emit  different sound to guide   visually   impaired persons hereinafter   referred to as "guiding floor   material"(regulation no.28.6 )”

i).   Finishes  shall have a non slip surface with a texture travarsable by a wheel chair. Curbs wherever provided should blend to a common level.

28.5.2  Corridor  connecting the entrance / exit for the handicapped:

The   corridor   connecting the entrance /   exit   for   handicapped 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   devices that emit sound to guide     visually impaired persons.

b) The minimum width shall be 1500 mm.

c)In case there is a difference of level slope ways shall be provided with a slope of 1:12.

d)Hand rails shall be provided for ramps / slope ways.

28.5.3Stair  ways:

One of the stair - ways near  the  entrance  / exist for the handicapped shall have the following provisions:

a)The minimum width shall be 1350 mm.

b)Height  of the riser shall not be more than  150  mm  and width of the tread 300 m.  The steps shall not have abrupt( square) nosing.

c)Maximum number of risers on a flight shall limited to 12.

d)Hand  rails  shall be provided on both  sides  and  shall  extend 300 mm. on the top     and bottom of each flight on steps.

28.5.4Lifts:

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 persons capacity by bureau of Indian standards.
Clear internal depth :1100mm

Clear  internal width : 2000mm. Entrance door width:900mm.

a)     A  hand  rail not less than 600 mm.  long  at  1000  mm. above floor level shall be fixed adjacent to the control panel.

b)    The  lift  lobby  shall be  of  an  inside  measurement of 1800x1800 mm. 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 and indicates that the door of the cage for entrance/exit is   either  open or closed.

28.5.5  Toilets:

One special W.C in a set of toilet shall be  provided for  the  use of handicapped with essential  provision  of wash basin near the entrance for the handicapped.

a)The minimum size shall be 1000x1750 mm.

b)Minimum  clear opening of the door shall be  900  mm.  and  the door shall be swing out

c)Suitable arrangement of   vertical / horizontal  hand rails with 50 mm clearance  from wall shall be made in the toilet.

d)The W.C seat shall be 500 mm. from the floor.

28.5.6  Drinking Water:

Suitable provision of drinking water shall be made   for the handicapped near the special toilet provided   for them.

28.5.7   Designing  for Children:

In  the  buildings  meant  for  the   predominant  use  of  the  children,  it  will be  necessary  to   suitably alter   the height of the hand- rail and other fittings  &  fixtures etc.

28.6     EXPLANATORY NOTES

GUIDING / WARNING FLOOR MATERIAL

The   floor   materials   to  guide  or  to   warn   the   visually  impaired   persons   with   a  change  of  colour   or material   with  conspicuously  different  texture  and  easily  distinguishable  from  the   rest  of  the  surrounding floor materials is called  guiding or warning floor materials. The material with different texture gives audible signals with sensory warning when a person  moves on this surface with walking stick. The guiding / warning floor material  is  meant to give the directional effect  or  warn  a person  at critical places. This floor material shall be  provided in the following areas :-

a)   The access path to the building and to the parking area.

b)   The  landing lobby towards the  information  board,  reception, lifts, stair-cases and   toilets .

c)    Immediately  at  the beginning /  end  of  walkway  where there is a vehicular traffic.

d)    At the location abruptly changing in level or ramp.

e)     Immediately in front of an entrance / exit and  the  landing.

PROPER SIGNAGE

Appropriate identification of specific facilities within a building for the handicapped persons should be done with  proper  signage.   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) . For visually impaired persons information board   in Braille   should be installed on the wall at a  suitable  height and  it should be possible to approach them closely.  To  ensure safe  walking  there should not be any  protruding  sign  which creates obstruction in walking. Public Address System may  also be provided in busy public areas.

The  symbols  /information  should  be  in  contrasting  colour.  and  properly  illuminated  because  people  with limited  vision  may  be  able  to  differentiate  amongst  primary  colours.  International  symbol  mark  for  wheel chair as shown below be installed at  the lift,  toilet,  staircase, parking areas etc.,  that  have  been provided
for the handicapped.

29.1INTERPRETATION

If  any  question  or  dispute  arises  with  regard  to  interpretation    of  any  of  these  regulations  the decision of  the Competent Authority shall be final.

29.2DISCRETIONARY POWERS

(a) In  conformity with the  intent  and   spirit   of   these Regulations, the Competent Authority may :-

(i) Decide   on  matters  where  it  is  alleged  that  there   is   an   error   in  any  order,     requirement, decision, determination  made  by  any  Competent  Authority under  delegation  of  powers  in Regulations  or  interpretation  in the  application  of  these Regulations.

(ii ) Interpretation of road alignment as per site situation.

(iii) If a line  of the  zone  divides  a  plot  in to  two different zone the approval in the land falling under non-permissive zone shall be given up to 25% of land subject to maximum area up to 1000 sq. mt. in respective permissible zone.

(iv)  Authorize  the erection of a building or  the  use   of premises  for a public service undertaking for   public   utility purposes   only,   where   he finds such an   authorization   to   be reasonably necessary for the public convenience   and   welfare, even if it is not permitted in any land use classification.

(b)In specific cases where a clearly demonstrable hardship  is caused, the Competent     Authority may for  reasons  to  be  recorded    in  writing,  by  special  permission  permit  any  of  the    dimension prescribed   in these   Regulations   to be   modified,   except   those relating   to   floor space Indices unless  otherwise  permitted under these regulations, provided that the relaxation that will not  affect the health, safety, fire safety, structural safety   and   public safety of the inhabitants of the building and  the neighbourhood.

29.3 APPEAL COMMITTEE

The authority shall form an appeal committee of

(1)   Chairman A.U.D.A. (Chairman)

30  PENALTIES

Any  person  contravening  any  of  the  aforesaid  regulations  or  any  of  the    provisions    of    the Development  Plan  shall  on   such contravention  be  liable to a punishment as  provided  in  the Gujarat   Town  Planning  &  Urban  Development  Act-1976,  and   Rules   framed  thereunder  as  in force from time to time.

31 TREE  PLANTATION

While  applying for development permission,  at  the rate  of 1 tree for every 100 sq.mts of building  unit,  shall have to be shown on the site plan/layout plan.The trees shall have to be guarded by the tree guards and shall be maintained.

32  ZONING AND USE PROVISIONS

The  type  of development  in each  land  use  zone  shall   be regulated as per Use Zone Table where ever permitted such zones and shall be applicable as per G.D.C.R. of other cities.

32.1   LAND USE ZONING IN HAZARD PRONE AREAS

In Natural Hazard prone areas namely the earthquake prone zones as per IS:1893, the cyclone prone areas as per IS:875 Part-3 and flood prone areas as per the Flood Atlas prepared by the Central Water Commission and/or the flood departments of the State, the development shall be regulated to ensure special protection from hazards for any type of development irrespective of use zone. Whereas the hazard prone areas identified as per the Vulnerability Atlas of India-1997 (or revisions thereof) prepared by Govt. of India or as may be prepared by State Government from time to time shall be used for such regulations, as given in Appendix-A.  Further action for protection from these hazards is to be dealt with taking into consideration the Guidelines givenin Appendix-B.

USE ZONE TABLE :
Note:

NOTE:-

1)  Public Utility  Services  buildings  which  shall   include buildings  or  works developed  or undertaken  by  the Govt./ Semi-Govt. or Public Undertaking only, such as sub-station, and receiving   station   of   the   Electricity Board,  Building  for infrastructure  facilities  like bus  service,  water  supply, drainage,    sanitation,  domestic garbage   disposal,     pumping   station,  electricity,  purification  plant,  police  building,  post   &   telegraph   and telecommunication, public   urinals,   milk   , octroi   and public telephone booth, fire brigade station,   ward   and zonal  offices  of  appropriate  authority,  taxies,  scooter  and  cycle    stand  and  parking  plot,  garden,  nursery, playground  and open  spaces, canal, communication network, first  aid  medical  centre,  primary  health centre, dispensary,  library,  reading room and religious buildings/places of public worship shall not  exceed 10% of plot area.

2)  Twenty  Percent  area  of  the  "open  space  plots"    provided  under    T.P.Schemes    may  be  utilised  for  the construction   with required   margins   for the   common/institutional/community   use   having basement, ground floor or a floor on stilt only. In  addition  to the stair cabins and ramps,  5%  of  the  permissible   built-up area of this plot shall be allowed  to   be built-up on for the construction of storm room, chawkidar room, toilet  etc.  at the ground level, in  case  the  building  is constructed  on stilt. The rest of the "Open Space Plot"  shall be kept open to sky.

3 For  Railway  Container  Depot  the    permission  shall  be  issued  for  development  for  structures  for  Railway department.

4) No  development  shall  be  permitted  in  area  designated  for  water  body,  pond  and  talav  in  development  plan excluding  Sabarmati Riverfront scheme.

5) The land designated under section 12 (2) (0) of the act for agricultural produce market, Hindustan Petroleum Ltd. and telephone exchange, the uses shall be permissible as per the requirements of concerned departments.

6)  Development as mentioned in Col.3 & 4 may  be  permitted only on roads as specified in regulation No.12.1.

7)The religious building shall be permitted in all use zone with consent of the competent authority

8) Permission for clubs, wadies and party plots shall be permitted only if it is comply with following requirements:

a)Minimum Building Unit required is 2000 sq mts.

b) It shall be permitted on roads having width of 18.00 mts Or more

c)A garbage container of minimum 4.00 tones capacity with 6.00 mts X 7.50 mts paved area shall be provided for garbage disposal abutting the road.

d) All necessary permissions and N.O.C. shall be obtained from relevant offices before commencing the use.

e) To see that the place is used according to the provision of this regulation, Competent Authority can collect security deposit from the plot owner as may be decided by the Competent Authority

EXPLANATION :

1. LIGHT INDUSTRY :

Light  Industry  means an industry in which the  processes  are   carried  out without detriment to the neighboring residential  areas  by  reason  of noise, vibration,  smell,  fumes,  smoke, soot,  ash, dust or grit. It will be subject to  the  following   restrictions:

i)   Power used will be electrical.

ii)   Maximum     power   used  will  be  10   KW   which     may     be  enhanced  upto  25  KW  by  the  Competent Authority in special  case of genuine expansion of existing factory which may have reached  the maximum limit of power.

iii)  Maximum floor space occupied should be 500 Sq.Mts.

iv)   It   will be housed in a building   suitable    for    the purpose. However, it shall not include the following industries:
Manufacture    or   refining of   ammonia,   bleaching   powder, chlorine, asphalt, brick, terra-cotta, gypsum, lime,  plaster   of   Paris,  coke,  creosote,  exctrain,  glucose,  starch,  dye,  explosive  of  fire  works  or  storage thereof in excess of 50 Kg. fertilizers, gas   (fuel or illuminating) in excess of three   hundred   cubic Mt., gelatine   or glue or zie from fish or animal   refuse    or offal, hydrochloric acid, nitric acid, sulphuric or sulphurous  acid,  lead  black,  linoleum  or  oil  cloth,  matches,   pyrexylin   or  articles  thereof  or  storage  in excess of 250 Kg. rubber    or treatment thereof involving offensive odour, tar, turpentine or Blast  furnace, coal   or junk   yard,   distillation   of   bores,   coal    weed   or   tar or manufacture of any    of    their   distilled products,   drop   forsages,   fat   grease    lard   of    fallow   manufactures,  refining  or  rendering  lout  or grist  mill,  hot  rolling  mill,  incineration,  reduction, or  dumping    of  dead animals,  garbage  or  refuse except     when   accumulated     and   consumed   on  the  same  premises  without   the  emission     of   odour, production or refining or storage   above ground   of   petroleum    or   other   inflammable   liquids   except heating  fuels, slaughtering of animals,  tanning or curing  or storage of raw hides and  skins,  tire recapping

2. SERVICE  ESTABLISHMENT  (RESIDENTIAL) :

The  Service  Establishment  wherein  the    work  done  or  the    machinery  installed  in such as would render service   to   the local residents and would satisfy their day-to-day residential   needs   and   which does not create

nuisance to   the   surrounding development in   terms of     noise dust and air pollution. It will be subject to the following restrictions:

i)   Power used will be electrical.

ii)  Maximum power used to be 10 KW for residential  zone   and not more than 25 KW in commercial zone.

iii)  Maximum floor space occupied will be 50 sq.mts.

iv)    It  shall  be  detached  and  housed  in  a  shop  or    a     building  specially    designed  for  the  purpose.  Such establishment  may    be  petrol  pumps,  service  station,  flour  mill,  bakery,  laundry,  air  compressor    unit, electrical motors, optical repair   and   watch repair    shops,   repair   of   musical   instruments,    carpentry, book-binding,  printing  press,  paper-cutting,  water  cooling,  and  juice  extracting     units,  black-smithy, vulcanizing,   motor  winding, cutting and nut cutting units etc.

3. LIGHT HOME WORKSHOPS :-

Light  Home Workshop means a workshop wherein the work done  or the  machinery installed is such as could be  done  or    installed    in  any  residential  area  without  detriment  to  the    neighborhood  by    means  of  noise, vibration, smell, fumes, smoke, soot,  ash, dust or grit etc.
It will be subject to the following restrictions:

i)    Power used will be electrical.

ii)   Maximum power used will be 1.5 KW.

iii)  Maximum floor space occupied will be 20 sq.mts.

iv)  It will be worked by the members of the family.

Appendix-A

LAND USE ZONING IN HAZARD PRONE AREAS – GUIDELINES  (Regulation No. 32.1)

1 OBJECTIVES

1.1 The basic objective of land use zoning is to regulate land use in hazard prone areas to minimise   the   damage   caused   to   the   habitat,   as   a   result   of   natural   hazards   viz. earthquakes,  cyclonic  storms  and  floods  which  recur  from  time  to  time.  Land  Use Zoning, therefore, aims at determining the locations and the extent of areas likely to be adversely affected by the hazards of different intensities and frequencies, and to develop such areas in a fashion that the loss to the development is reduced to the minimum.

1.2 Land Use Zoning envisages certain restrictions on the indiscriminate development of the "unprotected"  hazard  prone  areas  and  to  specify  conditions  for  safer  development  by protecting the area from severe losses. In the former case, boundaries of different zones
are to be established to prevent unrestricted growth there

2.SCOPE

2.1Areas covered under Development Plan
The  guidelines  for  Land  Use  Zoning  in  Hazard  Prone  Areas  are  to  be  taken  into consideration  while  formulating  the  Development  Plan  and  Area  Plan  under  the  Town Planning and Urban Development Act.

2.2Areas not covered under Development Plan
In such areas, these guidelines may be issued to the various local bodies, Municipalities, Individual Areas and Panchayats, enabling them to act while siting various development projects and deciding on construction of buildings, etc.

3 IDENTIFICATION OF HAZARD PRONE AREAS

3.1Earthquake Prone Areas

a. Intensities  of  VII  or  more  on  Modified  Mercalli  or  MSK  intensity  scale  are considered moderate to high. Areas under seismic zone III, IV and V as specified in IS 1893 are based on intensities VII, VIII, IX or more. Therefore, all areas in these three zones will be considered prone to earthquake hazards.

b. In these zones the areas which have soil conditions including the level of water table favourable to liquefaction or settlements under earthquake vibrations will have   greater   risk   to   buildings   and   structures   which   will   be   of   special consideration under Land Use Zoning.

cUnder these zones, those hilly areas which are identified to have poor stability conditions and where landslides could be triggered by earthquake or where due to  prior  saturated  conditions,  mud  flow  could  be  initiated  by  earthquakes  and where avalanches could be triggered by earthquake will be specially risk prone.

d.Whereas, earthquake hazard prone areas defined in 'a' above are identified on the

map given in IS 1893 to  small scale and more easily identified in the larger scale statewise maps given in the Vulnerability Atlas of India, the special risky areas as defined in 'b' and 'c' above, have to be determined specifically for the planning area under consideration through special studies to be carried out by geologists and geo-technical engineers.

3.2 Cyclone Prone Areas

a. Areas  prone  to  cyclonic  storms  are  along  the  sea  coast  of  India    where  the cyclonic  wind  velocities  of  47  meter  per  second  or  more  are  specified  in  the Wind Velocity Map given in IS 875 (part 3) to a small scale and easily identified in  the  Vulnerability  Atlas  of  India  where  the  Maps  are  drawn  statewise  to  a larger scale.

b. In  these  cyclone  prone  areas,  those  areas  which  are  likely  to  be  subjected  to heavy  rain  induced  floods  or  to  flooding  by  sea-water  under  the  conditions  of storm  surge,  are  specially  risky  due  to  damage  by flood  flow  and  inundation under water.

c. Whereas, areas under 'a' are easily identified, those with special risk as under 'b' have  to  be  identified  by  special  contour  survey  of  the  planning  area  under consideration and study of the past flooding and storm surge history of the area. These studies may have to be carried out through the Survey of India or locally appointed  survey  teams,  and  by  reference  to  the  Central  Water  Commission, Government of India and the concerned  department of Gujarat State.

3.3 Flood Prone Areas

a. The flood prone areas in river plains (unprotected and protected by bunds) are indicated in the Flood Atlas of India prepared by the Central Water Commission and reproduced on larger scale in the statewise maps in the Vulnerability Atlas of India.

b.Besides the above areas, other areas can be flooded under conditions of heavy intensity   rains,   inundation   in   depressions,   backflow   in   drains,   inadequate drainage, failure of protection works, etc.

c. Whereas, the flood prone areas under 'a' are identified on the available maps as indicated, the areas under 'b' have to be identified through local contour survey and study of the flood history of the planning area. Such studies may be carried out  through  Survey  of  India  or  local  survey  teams,  and  by  reference  to  the Central Water Commission and the concerned department of Gujarat State.

3.3. Land Use Zoning for Flood Safety

Some important considerations for regulating the land use in the planning areas are given below:i.Every  settlement  needs  some  open  areas  such  as  parks,  play-grounds,  gardens etc.   In  one  way  it  will be  possible  to develop  such  areas  by  restricting  anybuilding activity in vulnerable areas. Such a development will be in the interest of providing proper environment for the growth of such settlement.

ii.On the same analogy, certain areas on either side of the existing and proposed drains  (including  rural  drains)  should  be  declared  as  green  belts  where  no building  or  other  activity  should  be  allowed.  This  will  not  only  facilitate improvements  of  these  drains  in  future  for  taking  discharges  on  account  of growing  urbanisation,  but  will  also  help  in  minimising  the  damage  due  to drainage  congestion  wherever  rainfall  of  higher  frequency  than  designed  is experienced.  These  green  belts  at  suitable  locations  can  also  be  developed  as parks and gardens.

iii. In   the   existing   developed   areas,   possibilities   of   protecting/   relocation/ exchanging the sites of vital installation like electricity sub-station/power houses, telephone exchange, etc. should be seriously examined, so that these are always safe  from  possible  flood  damage.  Similarly,  the  pump  station  the  tubewells meant for drinking water supply should be raised above the high flood levels.

iv.Similarly, possibility of removing or bypassing buildings/structures obstructing existing natural drainage lines should be seriously considered. In any case, with immediate  effect  unplanned  growth  can  be  restricted  so  that  no  construction obstructing natural drainage or resulting in increased flood hazard is allowed.

4.APPROACH FOR LAND USE ZONING

Following two alternatives can be adopted for dealing with the disaster risk problems.
aLeaving the area unprotected. In this case it will be necessary to specify Land Use Zoning for various development purposes as recommended under Para 6.

b. Using  protection  methods  for  the  areas  as  a  whole  or  in  the  construction  of buildings, structures and infrastructure facilities to cater for the hazard intensities likely in the planning area as recommended under Appendix-B.

It will be appropriate to prioritise buildings, structures and infrastructures in terms of their importance from the point of view of impact of damage on the socio-economic structure of the society. Prioritisation scheme is suggested under Para 5.

5.PRIORITISATION

In regard to Land Use Zoning, different types of buildings and utility services may be grouped under three priorities as indicated below.
Priority  1.  Defence  installation,  industries,  public  utilities  like  hospitals,  electricity installations,    water    supply,    telephone    exchange,    aerodromes,    railway    stations, commercial  centres,  libraries,  other  buildings  or  installations  with  contents  of  high economic value.

Priority 2. Public institutions, Government offices, universities and residential areas. Priority 3. Parks, play grounds, wood lands, gardens

6. REGULATION FOR LAND USE ZONING

Appendix - B

PROTECTION OF BUILDINGS STRUCTURES AND INFRASTRUCTURES IN HAZARD PRONE AREAS

(Building Regulation No. 32.1)

A.PROTECTION OF AREAS FROM EARTHQUAKES

i. In those areas where there are no dangers of soil liquefaction or settlements or landslides, all building structures and infrastructures should be designed using the relevant Indian Standards as provided in the Building Regulations and the National Building Code

ii  Soils subjected to liquefaction potential under earthquake shaking, can be improved by compaction to desired relative  densities, so as to prevent the possibility of liquefaction.

iii. Buildings and structures could be founded on deep bearing piles going to non-liquefiable dense layers.

iv. Steep slopes can be made more stable by terracing and construction of retaining walls and breast walls, and by ensuring   good drainage of water so that the saturation of the hill-slope is avoided.

iii. other  appropriate  engineering  intervention  to  save  the  building  structures  or infrastructure from the fury of the earthquake.

Note The protective action given under (ii) to (v) will usually involve large amount of costs and should only be considered in the case of large and costly structures. For ordinary buildings the cost  of  improvement of  the  site    will  usually  be  uneconomical,  hence  bad  sites  should  be excluded by Land Use Zoning.

B.PROTECTION FROM CYCLONIC WIND DAMAGE

i.Buildings, structures and infrastructures in the cyclone prone areas should be designed according to the Indian Standards and Guidelines as provided in the Regulations and the National Building Code.

ii. Light utility structures used for electrical transmission and distribution, and towers for communications,   chimney   stacks   of   industrial   structures   require   special   design considerations against the cyclonic wind pressures, suctions and uplifts.

iii.In case the buildings, structures and infrastructures are founded on marine clay deposits it will be advisable to adopt either under-reamed piled foundations, or individual column footing  with  a  reinforced  concrete  beam  located  at  the  level  of  the  ground,  or  a continuous reinforced concrete strip footing.

iv. Wherever,  the  top  soil  could  become  slushy  due  to  flooding,   the  top  layer  of  30  cm depth of soil should not be considered for providing lateral stability

v. In storm surge prone areas, it will be preferable to construct the community structures, like  schools,  cyclone  shelters,  etc.  by  raising  the  level  of  the  ground  protected  by provision of retaining walls at sufficient distance away from the building, taken to such depth that no erosion takes place due to receding storm surge.   Alternatively, construct the  community  structures  on  stilts  with  no  masonry  or  bracing  upto  the  probable maximum surge level.

APPENDIX :C

LIST OF OBNOXIOUS AND HAZARDOUS INDUSTRIE

*****