THE

JHARKHAND GAZETTE

EXTRAORDINARY

PUBLISHED BY AUTHORITY

26 FALGUN, 1942 (S)

RANCHI, WEDNESDAY, 17TH MARCH, 2021

URBAN DEVELOPMENT & HOUSING DEPARTMENT

------------

NOTIFICATION

16TH MARCH, 2021

No.-7/न०व०/अध/स० सो०/102/2013/1092-- In exercise of the powers conferred

under clause-89 of the Jharkhand Building Bye-laws, 2016, as amended, the Government of

Jharkhand do hereby notify the Jharkhand Building (VIIIth Amendment) Bye-laws, 2021.

Sl.

Chapter

Clause

Sub-

clause

Provision

Amended Provision

1

IV

35

Note- (3)

No high rise building (building with a height

above 16.4 meters) shall be allowed on a plot

size less than 1000 sqm.

Deleted

2

IV

42

42.5

Parapet walls and handrails provided on the

edges of roof terraces, balcony, verandah, etc

shall not be less than 1.0 m and not more than

1.2 m in height from the finished floor level.

Addendum:-

42.5.1

Parapet of a suitable height may

be constructed to hide installation like water

tank and for other such purpose.

3

IV

46

46.4

No projected balcony shall be allowed, on

setback less than 2.0m. Projected balcony shall

be allowed with a width of 0.9m., where the

setback is between 2.0m to 2.5m. For setback

more than 2.5m projected balcony shall be

No projected balcony shall be allowed, on

setback less than 2.0m. Projected balcony

shall be allowed with a width of 0.9m.,

where the setback is between 2.0m to 2.5m.

For setback more than 2.5m projected

No. 193

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Jharkhand Gazette (Extraordinary), Wednesday, 17th March, 2021

allowed with a width of 1.2 m. Projected balcony

shall only be allowed on the second floor and

above floors. Balcony may be allowed on the

first floor subject to condition that the side and

rear setback of the building is more than 4.5 m.

& 4.5m. clear driveway is available for Fire

tender movement. 50% of the area on the

projected balcony shall be taken into account for

calculation of the Floor Area Ratio. No balcony

should be provided with fixed grill as it works as

fire refuse areas.

600mm. wide projection in setback is

permitted as cupboards and it is to be counted in

calculating FAR (Floor Area Ratio).

balcony shall be allowed with a width of 1.2

m.

In addition to single block, for

multiple blocks in the campus,projected

balcony shall only be allowed on the second

floor and above floors. Balcony may be

allowed on the first floor subject to

condition that the side and rear setback of

the building is more than 4.5 m. & 4.5m.

respectively clear driveway is available for

Fire tender movement.

50% of the area on the projected

balcony shall be taken into account for

calculation of the Floor Area Ratio. No

balcony should be provided with fixed grill

as it works as fire refuse areas.

600mm.

wide

projection

in

setback is permitted as cupboards and it is to

be counted in calculating FAR (Floor Area

Ratio).

4

IV

48

48.4

Individual residential and small commercial

buildings, plot size up to 750sqm. may have one

basement.

However

maximum

two

floor

basements/cellars may be permitted to be

constructed for plot size above 750sqm. leaving

the prescribed set back/open space applicable to

the building. Further, in case of apartment/group

housing/ commercial/buildings and basements

may be allowed to be constructed under the

entire plot area leaving minimum of 3m. space

from the boundary in front, sides and rear of the

premises subject to the following;

Individual residential and small commercial

buildings, plot size up to 750sqm. may have

one basement. However maximum two floor

basements/cellars may be permitted to be

constructed for plot size above 750sqm.

leaving the prescribed set back/open space

applicable to the building. Further, in case of

apartment/group

housing/

commercial/buildings and basements may

be allowed to be constructed under the entire

plot area leaving clear 2m. (minimum)

margin for single basement and 3m.

(minimum) for double basement space

from the boundary in front, sides and rear of

the premises subject to the following;

5

IV

51

Addendum:-

51.2

The provisions for rainwater harvesting in various building categories as below:-

Sl.

Category / Use

Provisions to be Made

Other Conditions

(a)

(b)

(c)

(d)

1

Residential Plotted Housing

New Proposals

Construction

of

RainwaterHarvesting

Structure

Emphasis on both storage

andreuse

2

Housing Projects

New Proposals

i. Construction

of

RainwaterHarvesting

Structure

ii. Concrete

paving

to

beavoided

and

permeablematerials to be

used for allopen parking

spaces

Indicate the system of

Storm Water Drainage,

Rainwater

Harvesting

System

and

Recharge

Well

3

Public and Semi Public Buildings

Jharkhand Gazette (Extraordinary), Wednesday, 17th March, 2021

3

All Proposals

i. Shall

have

RainwaterHarvesting

System andStorage

ii. Shall have Recharge pits

Emphasis on both storage

andreuse

4

Commercial / Mixed Use

All Proposals

i. Construction

of

Rainwater

Harvesting

System

ii. Soft

landscape

provisionsand

open

spaces

withpercolation

pits.

iii. Common

Treatment

planto be part of the

integrateddevelopment

Indicate the system of

Storm

Water

Drainage,

RainwaterHarvesting

System

andRecharge

Well.

Emphasis on both storage

andreuse.

5

Industrial

All Proposals

i. Construction

of

RainwaterHarvesting

System

ii. Soft

landscape

provisionsand

open

spaces

withpercolation

pits.

iii. Use

of

abandoned

borewells for recharging

ofground water

iv. Common Treatment plan

tobe

part

of

the

integrateddevelopment

Indicate the system of

StormWater

Drainage,

RainwaterHarvesting

System and

Recharge Well.

Provision to be made not

toinject

contaminated

water

into

recharge

structures

inindustrial

areas.

Care to be taken to keep

suchstructures away from

sewerlines, septic tanks,

soak

pits,landfill

and

other

sources

ofcontamination.

51.3

Methods:-

The methods of ground water recharge mainly are:

51.3.1

Urban Areas - Roof Top Rain Water /Storm runoff harvesting

through

51.3.1.1 Recharge Pit

51.3.1.2 Recharge Trench

51.3.1.3 Tube well

51.3.1.4 Recharge Well

51.3.2

Rural Areas - Rain Water Harvesting through

51.3.2.1 Gully Plug

51.3.2.2 Contour Bund

51.3.2.3 Gabion Structure

51.3.2.4 Percolation tank

51.3.2.5 Check Dam/ Cement Plug/ Nala Bund

51.3.2.6 Recharge shaft

51.3.2.7 Dug well Recharge

51.3.2.8 Ground Water Dams

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Jharkhand Gazette (Extraordinary), Wednesday, 17th March, 2021

51.4

Techniques:-

Urban Area-In urban areas, rain water available from roof tops of buildings,

paved and unpaved areas goes waste. This water can be recharged to aquifer and can be

utilized gainfully at the time of need. The rain water harvesting system needs to be

designed in a way that it does not occupy large space for collection and recharge

system. A few techniques of roof top rain water harvesting in urban areas are described

below.

51.4.1

Roof Top Rain Water Harvesting Through Recharge Pit

51.4.1.1 In alluvial areas where permeable rocks are exposed on the

land surface or atvery shallow depth, roof top rain water

harvesting can be done through rechargepits.

51.4.1.2 The technique is suitable for buildings having a roof area of

100 sq. m and areconstructed for recharging the shallow

aquifers.

51.4.1.3 Recharge Pits may be of any shape and size and are

generally constructed 1 to 2mwide and 2 to 3m deep which

are back filled with boulders (5-20 cm), gravels (5-10mm)

and coarse sand (1.5-2mm) in graded form. Boulders at the

bottom, gravels inbetween and coarse sand at the top so

that the silt content that will come withrunoff will be

deposited on the top of the coarse sand layer and can easily

beremoved. For smaller roof area, pit may be filled with

broken bricks/ cobbles.

51.4.1.4 A mesh should be provided at the roof so that leaves or any

other solid waste /debris is prevented from entering the pit

and a de-silting /collection chamber mayalso be provided at

the ground to arrest the flow of finer particles to the

rechargepit.

51.4.1.5 The top layer of sand should be cleaned periodically to

maintain the recharge rate.

51.4.1.6 By-pass arrangement has to be provided before the

collection chamber to reject thefirst showers.

51.4.2

Roof Top Rain Water Harvesting Through Recharge Trench

51.4.2.1 Recharge trenches are suitable for buildings having roof

area of 200-300 sq.m. and where permeable strata are

available at shallow depths.

51.4.2.2 Trench may be 0.5 to 1 m wide, 1 to 1.5m deep and 10 to

20m long dependingupon the availability of water to

recharge.

51.4.2.3 These are back filled with boulders (5-20cm), gravel (5-

10mm) and coarsesand (1.5-2mm) in graded form –

boulders at the bottom, gravel in betweenand coarse sand at

the top so that the silt content that will come with

runoffwill be coarse sand at the top of the sand layer and

can easily be removed.

51.4.2.4 A mesh should be provided at the roof so that leaves or any

other solidwaste/debris is prevented from entering the

trenches and a de-silting/collectionchamber may also be

provided on ground to arrest the flow of finer particles

tothe trench.

51.4.2.5 By-pass arrangement be provided before the collection

chamber to reject the firstshowers.

51.4.2.6 The top layer of sand should be cleaned periodically to

maintain the recharge rate.

Jharkhand Gazette (Extraordinary), Wednesday, 17th March, 2021

5

51.4.3

Roof Top Rain Water Harvesting Through Existing Tubewells

51.4.3.1 In areas where the shallow aquifers have dried up and

existing tube wells aretapping deeper aquifer, roof to rain

water harvesting through existing tube wellcan be adopted

to recharge the deeper aquifers.

51.4.3.2 PVC pipes of 10cm dia are connected to roof drains to

collect rainwater. Thefirst roof runoff is let off through the

bottom of drainpipe. After closing thebottom pipe, the

rainwater of subsequent rain showers is taken through a T

toan online PVC filter. The filter may be provided before

water enters the tube wells.The filter is 1–1.2m in length

and is made up of PVC pipe. It’s diameter shouldvary

depending on the area of roof, 15cm if roof area is less than

150sq m and20cm if the roof area is more. The filter is

provided with a reducer of 6.25cm onboth the sides. Filter

is divided into three chambers by PVC screens so that

filtermaterial is not mixed up. The first chamber is filled up

with gravel (6-10mm),middle chamber with pebbles (12-

20mm) and last chamber with bigger pebbles(20-40mm).

51.4.3.3 If the roof area is more, a filter pit may be provided.

Rainwater from roofs istaken to collection/de-silting

chambers located on ground. These collectionchambers are

interconnected as well as connected to the filter pit through

pipeshaving a slope of 1:15. The filter pit may vary in

shape and size dependingupon available runoff and are

back-filled with graded material, boulder at thebottom,

gravel in the middle and sand at the top with varying

thickness (0.30-0.50m) and may be separated by screen.

The pit is divided into two chambers,filter material in one

chamber and other chamber is kept empty toaccommodate

excess filtered water and to monitor the quality of filtered

water.A connecting pipe with recharge well is provided at

the bottom of the pit forrecharging of filtered water through

well.

51.4.4

Roof Top Rain Water Harvesting Through Trench With

Recharge Well

51.4.4.1 In areas where the surface soil is impervious and large

quantities of roof wateror surface runoff is available within

a very short period of heavy rainfall, theuse of trench/ pits

is made to store the water in a filter media and

subsequentlyrecharge to ground water through specially

constructed recharge wells.

51.4.4.2 This technique is ideally suited for area where permeable

horizon is within3m below ground level.

51.4.4.3 Recharge well of 100-300 diameter is constructed to a depth

of at least 3 to 5mbelow the water level. Based on the

lithology of the area well assembly isdesigned with slotted

pipe against the shallow and deeper aquifer.

51.4.4.4 A lateral trench of 1.5 to 3m width and 10 to 30m length,

depending upon theavailability of water is constructed with

the recharge well in the centre.

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Jharkhand Gazette (Extraordinary), Wednesday, 17th March, 2021

51.4.4.5 The number of recharge wells in the trench can be decided

on the basis ofwater availability and local vertical

permeability of the rocks.

51.4.4.6 The trench is backfilled with boulders, gravels and coarse

sand to act as a filtermedia for the recharge wells.

51.4.4.7 If the aquifer is available at greater depth say more than

20m, a shallow shaft of2 to 5m diameter and 3-5m deep

may be constructed depending uponavailability of runoff.

Inside the shaft a recharge well of 100-300mmdia

isconstructed for recharging the available water to the

deeper aquifers. At thebottom of the shaft a filter media is

provided to avoid choking of rechargewell.

By the order of the Governor of Jharkhand

Vinay Kumar Choubey,

Secretary to Government

Urban Development & Housing Department.

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झारखड राजक य मुणालय

झारखड राजक य मुणालय, राँची वारा काशत एवं मुत

राँची वारा काशत एवं मुत,

झारखड गजट

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