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Provisions for Green Buildings

(To be adopted in the state of HPl

Green Building Code

Water Conservation and Management:

Considering an ever increasing demand for water, efforts are needed tosubstantially reduce water consumption in buildings. Integrated andsustainable water management focusing on least anthropogenic waterdischarge from human activities should be pursued. The use of waterconserving fixtures, landscaping, rain water harvesting, aquifer rechargingand waste-water recycling need to be given due consideration.

a. Rain Water Harvesting from roof and non-roof areas.

Design rainwater harvesting system to capture at least 'peak-monthrainfall' runoff volume from roof and non-roof areas.

b. Waste Water Recycle and Reuse

i. Waste Water Treatment: Design an on-site treatment system tohandle 100% of waste water generated in the building, to~thequality standards suitable for reuse, as prescribed by Central (or) ;:.State Pollution Control Board, as applicable. #! ,.,,~ ~r.-

ii. Waste Water Reuse: Use treated waste water for at least 25% of

the total water required for landscaping, flushing, and coolingtower make-up water (if the project uses watercooled chillers).Thetreated waste water could be used for landscaping, flushing andair-conditioning.

Notes:1. Waste water here refers to both grey and black water.2. Waste water can be treated in-situ and reused in-situ.

3. In case the local authorities insist the project to divert waste water to acentralized/common wastewater treatment plant, then the project can showcompliance, by reusing treated wastewater from the centralized/ common/ anyother waste water treatment plant, iffeasible; otherwise this condition will not beimposed. In such a situation captured rain water can also be considered to showcompliance.

c. Reduction of Hardscape

At least 30% of open area as required per local buildings J:>ye-Iaws

shall.bejJervious. Use of grass pavers, paper bloc~s with atl~ast ~O%openmg;" landscape, pergolas etc. would be consIdered as pervIOussurface.

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d.Aquifer Recharging (Where feasible)

Minimum one recharge bore per 5000 m2 of built up area, wherefeasible is recommended.

(2) Solar Energy Utilization

All efforts need to be made towards optimum and efficient use of energysources for life sustenance. The increasing thrust on using non-fossil fuelenergy for all needs have to be given priority consideration. The tapping ofrenewable sources of energy for lighting, heating, cooling and ventilationneeds, deserve special attention.

Note: For captive solar power generation, a minimum of 15 % of sanctioned load is therequirement.

a. Installation of Solar Photovoltaic Panels

Solar photovoltaic (PV) systems are direct energy conversion

systems that convert solar radiation into electric energy. Roof of

buildings as well as other exposed areas such as of parking shade,'

can be installed with solar PV system. Common lighting systemshould be solar. 'i

b.Installation of Solar Assisted Water Heating Systems

Solar water heating shall be provided to meet at least 50% of hotwater demand of the commercial, industrial and institutionalbuildings.

c.Use of Roof Top for installation of Solar System

An open area of 3 m2 would be required for installation whichsupplied about 100 litres of water per day. At least 60% of the rooftop area may be utilized for installation of the solar system.

Energy Efficiency.

a.Energy Efficiency through building envelope

The building envelope is the physical separator between the interiorand exterior of a building.Componentsof the envelope are typically:walls, floors, roofs, fenestrations and doors. The building envelopeshall be designed so as to minimizeenergy consumption..through'Oneor more of following means: -

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. The buildings will adopt mandatory Solar Passive Features,SPF as per State Government Notification No TCP-F(1)/2008Dated 24 August 2008 as required under Clause (3) of Article348 of the Constitution of India. This provision is onlyapplicable to buildings in cold climate as per HP ECBC.

. Air leakage for glazed swinging entrance doors and revolvingdoors shall not exceed 5.0 lIs.m2. Air leakage for otherfenestration and doors shall not exceed 2.0 I/s.m2.

. The following areas~of the enclosed building envelope shallbe sealed, caulked, gasketed, or weather- stripped to minimizeair leakage;1. Joints around fenestration and doorframes;2. Openings between walls and foundations and between

walls and roof and3. wall panels;4. Openings at penetrations of utility services through, roofs,

walls, and floors;5. Site- built fenestration and doors;6. Building assemblies used as ducts or plenums; and7. All other openings in the building envelope.

The roof assemblies, wall assemblies, vertical fenestration ~nd

skylight shall comply with the provisions mentioned in the relevant .;: ..section of HP ECBC code as and when amended. "':3 ~,~;, ....

- ~~In summary:1- The desirable roof assembly U-Factor shall not exceed 0.20

W/m2 K2- The desirable wall assembly U factor shall not exceed 0.34

W/m2 K3- The desirable vertical fenestrationU factor is 3.0 W/m2K, Solar

Heat Gain Coefficient (SHGC) 0.27 while Minimum allowablevisible light transmittance(VLT) of 0.27.

4- The desirable SkylightU factor is 4.25 W/m2K, Solar Heat GainCoefficient (SHGC) 0.25 and the desirable skylight to roof ratioshall not exceed 5%.

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b. Low Energy Consumption Lighting Fixtures

Lamps, luminaries, ballasts and the controlling systems should bemonitored for achieving energy efficiency through artificial lighting.

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1. Interior Lighting

. For Residential Buildings

~ Lamps - Lamps used for general lighting scheme shall conform

to the following

Point Light Source - All the point light sources installed in the

building for general lighting shall be CFL or LEDs orequivalent.

Linear Light Source - All the linear light sources installed in the

building for general lighting shall be T-5 or at least 4 Star BEE

rated TFLs or equivalent.

~ The installed interior l!ghting power shall not exceed the LPD

(lighting power density) value as recommended by HP ECBC asand when amended.

.For buildings other than residential ~

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~ Lamps used for general lighting shall conform to the following,. .'1 :'f

Point Light Source - All the point light sources installed in th~ ~<.;

building for genera lighting shall be CFL or LEDs or equivalent.

Linear Light Source - All the linear light sources installed in the

building for general lighting shall be T-5 or at least 4 Star BEE

rated TFLs or equivalent.

~ The Lighting systems and equipment shall comply to relevant

section of HP ECBC as and when amended.

~ The installed interior lighting power shall not exceed the LPD

(lighting power density) value as recommended by HP ECBC asand when amended.

~ Lighting controls shall be installed as recommended by HP

ECBC in commercial buildings with connected load of 50 kW or

more having conditioned area more than 500 m2. '" "'"

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Desirable Lighting Power Density (LPD) for different spaces

Office Building 9.50

Hospitals 9.70-.---.-----.-----

Hotels 9.50

Shopping Mall 14.1--------

University and Schools

Library

11.2

12.2

12.2Dining: bar lounge/leisure-"''''--'--'--''--'--'' ---' '-'--"-' "",,-, ,-----

Dining: cafeteria/fast food

Dining: family

14.5

10.9------

Dormitory'----Fire station'

9.10

9.70'-

10.0---

Gymnasium

Manufacturing facility 12.0'-'---'

2. Exterior Lighting

For Commercial, Multi-storey Residential Complexes, GroupHousing Societies,Apartmentcomplexes, etc.

. Lamps - External lighting sources shall have mmij.11umluminous efficacies as per the table given below: --~ ,

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Minimum allowable luminous efficacy of various light sources"! -':

. The installed exterior lighting power density for. t~e respective

applications shall be in accordance with relevant section of

Himachal Pradesh ECBC as and when amended.

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Motion piCturetheater 9.43

Museum 10.2

Post office 10.5

Religiousbuilding 12.0.--

Sports arena 9.70

Transportation 9.20

Warehouse 7.08

Performing arts theater 16.3

Police station 9.90

Workshop 14.1----Automotive facility 9.00

Convention center 12.5

Parking garage 3.00

Sr. Light Source MinimumNo. allowable luminous

efficacy (Im/W)1 CFLs (compact fluorescent lamps) 50

2 LEDs (light emitting diodes) 50

'3 Fluorescent Lamps 75

4. Metal Halide Lamps 75

5. High Pressure Sodium Vapour 90Lamps

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Desirable exterior lighting power density for different external areas

Building entrance (with canopy)

Building entrance (w/o canopy)

Building exit

10 W/m2 of canopied area

90 W/linear m of door width

60 W/linear m of door width------

'-'-"'--""--' .-----.--------------Building fa~ade 5.0 W/m2 ofyertical fa9adearea

._---Emergency signs, ATM kiosks, Security areas 1.0W/m2

fa~ade- ..

Driveways and parking (open/external)- -- - n ---

Pedestrian walkways

Stairways

Landscaping

Outdoor sales area

1.6 W/m2.. --- .----- ..-.................-------

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2.0 W/m2

10.0W/m2--0.5W/m2

9.0 W/m2

. Lighting controls shall be installed as recommended by Himachal

Pradesh ECBC as and when amended, for extemallighting.

c. Energy Efficiency in HVAC systems design (mandatory f?rcommercial and desirable for others). ~

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Energy efficiency in HVAC system design for buildings. ,. : --....

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. The inside design conditionsof a conditioned space shall confonn to

National Bullding Code 2016.

. The outside design conditions shall conform to National Building

Code 2016.

. Efficiency of every HVAC equipment installed shall comply with

relevant section of Himachal Pradesh ECBC requirement.

. The distributed cooling systems (Unitary air conditioners/ Split air

conditioners) shall be at least BEE 3 Star rated products.

. The Variable Refrigerant Flow system shall meet or exceed the

Minimum Energy Efficiency Ratio (EER) of 3.28 or Integrated

Energy Efficiency Ratio (lEER) of 4.36.

. The desirable minimumboiler efficiency for gas and oil-firedboilers

shall meet or exceed 80%.

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. All the other HVAC systemsshall refer to the relevant sectionofHP

ECBC as and when amended.

. To avoid the conductive heat losses through piping and ductwork

insulation shall meet the recommendation of relevant section of

Himachal Pradesh ECBC as and when amended. The desired R-

value of insulationfor piping is 0.9 m2.K/W.

Waste Management

a. Segregation at Source.

i. Building-level Facility - Provide separate bins to collect dry waste(paper, plastic, metals, glass, etc.,) and wet waste (organic),at all thefloors and common areas of the building, as applicable. Divert thecollected waste to a centralized facility, which is easily accessiblefor hauling.

ii. Centralized Facility - In additionto dry and wet waste bins, provid6separate bins for safe disposal of the following hazardous waste, atthe centralizedfacility: ~/ , $\},,,",

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. Batteries'e' waste

LampsMedical. waste, if any

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b. Organic Waste Management.

Ensure effective organic waste management, so as to avoid domesticwaste being sent to landfills and to improve sanitation & health.Install an on-site waste treatment system for handling at least 50% ofthe organic and landscape waste generated in the building (includingtenant-occupied areas). The generated manure or biogas shall beutilized as appropriate.

c. Disposal

Scientific disposal mechanism as per Solid Waste ManagementRules 2016, if nearby MunicipalSolid Waste ManagementProject isnot available. ~,

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(B) Provisions and Applicability.

Provisions of green building code are applicable on all plots of morethan 200 m2 size, in case of commercial, institutional and real estateprojects as indicated below :-

Provisions and applicability for various plot sizes

Category ofI

Sub-Plot Sizes category(sq.m)

Applicable plot areaI

Provisions for(sq.m) Building (as per

Building Code)

GreenGreen

I Up to 200 Optional

II A 200 to 500 1(a)Rain Water Harvestingfrom roof and non-roofareas.

4(a) Segregation at Source,

B 500 to 1,000 1(a)Rain Water Harvestingfrom roof and non-roofareas.

1(b)Waste Water Rec~cleandReuse ""

2(b)Instaliation of Solar .,7 -~!

Assisted Water Heating" ~ ",'.

Systems -", ~ .-v4(a) Segregationat Source. -

C 1,000 to 3,000 1(a) Rain Water Harvestingfrom roof and non-roofareas.

1(b)Waste Water Recycleand Reuse

l(c) Reduction of Hardscape2(b)Installation of Solar

Assisted Water HeatingSystems

3(b) Energy Efficiency inHVAC systems design(mandatory forcommercial and desirablefor others).

4(a) Segregationat Source.

III A Above 3,000 l(a)Rain Water Harvestingfrom roof and non-roof'-areas.

l(c) Reduction of Hardscape1(d) Aauifer Rechamin

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(Where feasible)2(a)Installation of Solar

PhotovoltaicPanels2(b)Installation of Solar

Assisted Water HeatingSystems

3(a) Low Energy ConsumptionLighting Fixtures

3(b)Energy Efficiency inHVAC systems design(mandatory forcommercial and desirablefor others),

4(a) Segregationat Source.4(b) Organic Waste

Management.

Note: * The above mentioned provisionsshould be followed in case of residentialplots formingpart of approved layout plan of a real estate project.

* The above mentionedprovisionsmay be shown optional hereby but nothingwould prevent competent authorities to prescribe one or many of them ifsite situation warrants so.

(C)

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Projects which are under construction or at design stage and if a~ pre-certified by authorized rating agencies will also be eligible for availing "ri.

additional FAR. ;t:.. ...~~,( .". .:..

Incentive FAR

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In case oWner(s) of the property desire to procure greenbuilding ratings from any of the rating bodies such as(IGBC/GRIHA), * an incentive of 10% additional FAR withoutpaying additional fee shall be granted to such projects as arecertified with under mentioned ratings:

a) Buildings granted GoldIPlatinum rating by IGBC or;

b) Buildings granted 4/5 star rating by GRIHA

* IGBC- Indian Green Building Council, GRIHA-GreenRating for Integrated Habitat Assessment,

(ii) Sanction of building plan for construction of "Green Building"and grant of additional FAR shall be allowed on the basis ofpre- certification by the authorized green rating agencies.

Final completion certificate shall be issued by the .competentauthQrity after award of "Final Rating Certificate" from theauthorized rating agency.

(iii)

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In case of non-compliance of the "Green Building Code"requirements and if the applicant fails to obtain required ratingcertification, the additional FAR shall be compounded at therate of 10 times the normal building planning permission fee.

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rector,& Country Planning Deptt.

Hlmoc..halPrad€lsh, Shimla.171009

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