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ANNEXURE

Project Details

Project Building Building Space (squre -foot) Site area (acers)

Project 53792 (5000 m2) 1.5

Eq 1 Development Density (sf/acre)= Gross Building Area(sf)/Site Area (acres)

From Eq 1 Development Density (sf/acre) 35861.3

Eq 2 Density radius (ft) = 3 * (Site area* development density)(1/2)

From Eq 2 Density radius (ft) 695.8

Eq 3 Average Property Density within density Boundry= sum of square footage/sum of site area

Assumption

In the density radius total site area = 20 acers (out of 35 acers)

In the density radius total building space = 10 acers

From Eq 3 Average property density ( m2) 8093.7 >1500 m2/acre net (Satisfied Credit 2.2 requirements)

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Alternative Transportation Map

Reduced Site Disturbance

Eq 4 50% of Site (excluding building footprint) = (Total site area-building foot print area)*0.5

From Eq 4 50% of site (excluding building footprint) ( m2) 2035

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Eq 8 Minimum draw down rate (Qr) = Tank Capacity (m3)/Rainfall

even interval (s)

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Table 1: Monthly Rain Details And Dischar

Month Jan Feb March April May Jun Jul Aug Sep Oct Nov Dec

Average Precipitation

(mm) 89 69 147 231 371 224 135 109 160 348 315 147

From

Eq 7

Qv from roof 169 131 279 439 705 426 257 207 304 661 599 279

Qv from ground 111.25 86.25 183.75 288.75 463.75 280 168.75 136.25 200 435 393.75 183.75

Captured total runoff 280 217 463 728 1169 706 425 343 504 1096 992 463

From

Eq 8

Qr 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007

Actual Qr due to rain 0.003 0.003 0.005 0.008 0.014 0.008 0.005 0.004 0.006 0.013 0.011 0.005

Actual Qr < Qr Maximum (Therefor it is adequate 40*20*1.4 m3

pond to collect strom water within one day)

Satisfied Credit 2.6 requirement

Quality Control of Stromwater

Technology use

Average removal

of suspendad

solids

Considarable Factors

Vegitated Filter strips 65% runoff volume, slope and infiltration rater of soil

Pond 50% pool volume and pond shape

Impervious pavement 70% storage volume and percolation rate

Credit 2.7 requirement

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Heat Island Effect, Non-roof

Eq 9 Q = S+E+A+R+O

S= area shaded area by trees or other landscape featureE= area shaded by solar energy pannels

A= area shaded by architectural devices

R= all the hardscape surfaces that have an SRI of at least 29

O= all hardscape surfaces that have and open-grid paving

Description Area (m2)

Total non-roof hardscapes 2500

Shaded area 750

Areas of hardscapes with minimum SRI-29 800

From Eq 9 Total qulifing surfaces (Q) 1550

Eq 10 Q >T/2

T = total non roof area

From Eq 10 T/2 ( m2 ) = 1250 < Q Satisfied Credit 2.8 requirement

Heat Island effect -Roof

Eq 11 (Area of Roof meeting Minimum SRI / Total roof area) + (SRI of Installed roof / Required SRI ) >= 0.75

From Eq 11 2000/2000 + 29/29= 2

> 0.75 Satisfied the Credit 2.9 requirement

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Lighting Pollution Reduction

Identification

Code of Practice for energy efficient

Building in Sri Lanka LPD (W/m2)

Actual

LPD

(From

Site

Lighting

table)

Actual

LPD

Reduction

(%)

Required LPD

Reduction (%) Complies

Parking 3.20 2.00 38% 20% yes

Walkways 2.00 1.50 25% 20% yes

Courtyard 3.00 2.20 27% 20% yes

Building Faade 3.00 1.20 60% 50% yes

(Credit 2.10 requirement)

Without Shilding waste of light

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With shilding reduce the polution

(Credit 2.10 requirement)