Shruti Choud­hari, VP, B L Kashyap & Sons Ltd

En­ergy short­age in the coun­try has pushed real es­tate de­vel­op­ers to opt for ‘green’ soluɵons with a fo­cus on five key ar­eas: en­ergy, water, ma­te­rial, in­door air qual­ity and land­scap­ing, writes Shruɵ Choud­hari, VP, B L Kashyap & Sons Ltd, a lead­ing con­stru

MGS Architecture - - Front Page -

Green build­ing con­struc­tion has seen a dra­matic in­crease in In­dia, grow­ing at a CAGR of 30% be­tween 2013 and 2016. In­dia has the sec­ond largest green foot­print at 3.59 bil­lion sqft, sec­ond only to the US. In fact, green build­ings are pro­jected to grow 20% in the coun­try by 2018 es­ti­mated to be 10 bil­lion sqft by 2022. Some of the lead­ing driv­ers are client de­mand, en­vi­ron­men­tal reg­u­la­tion, and an en­hanced aware­ness of the oc­cu­pant and ten­ant ben­e­fits of green build­ings.

At B.L Kashyap, most of the green prac­tices are as per Stan­dard Op­er­at­ing Pro­ce­dures from de­sign to plan­ning stage, with a full en­ve­lope cov­er­ing Health, Safety and En­vi­ron­ment, in­clud­ing pro­cure­ment of ma­te­ri­als (which must be within a spe­cific ra­dius of the site) to dis­posal of ma­te­ri­als and waste re­cy­cling, iden­ti­fi­ca­tion of en­vi­ron­men­tal friendly con­struc­tion and shut­ter­ing sys­tems as well as non-haz­ardous in­te­rior ma­te­ri­als, fin­ishes and paint. Bharti Realty World­mark (Ae­roc­ity), Em­bassy Tech Vil­lage (Bangalore), Hero Fac­to­ries are some of the re­cently com­pleted LEED Gold and Plat­inum cer­ti­fied con­struc­tions ex­e­cuted by B.L Kashyap.

Case study

Hines One Hori­zon Cen­ter, Gur­gaon, an of­fice cum re­tail project de­vel­oped by in­ter­na­tional real es­tate firm Hines and DLF Ltd, was de­signed by world renowned Robert Stern Ar­chi­tects. BLK was the gen­eral con­trac­tor for this project. Hines earned LEED Plat­inum cer­ti­fi­ca­tion un­der IGBC’S LEED In­dia CS pro­gram in 2015.

En­ergy sav­ing mea­sures at Hines re­sulted in 14% re­duc­tion in en­ergy de­mand as com­pared to a stan­dard build­ing. Green so­lu­tions in­clude: • Dual Pane high per­for­mance glass • Chillers with VFDS (Vari­able Fre­quency Drives)

• En­ergy Ef­fi­cient light­ing, CFLS and day light­ing • Build­ing ori­en­ta­tion keep­ing sun­light and wind fac­tors

in mind • VAV sys­tem of air-con­di­tion­ing • Sen­sors for op­er­at­ing and man­ag­ing VAV/HVAC • Nat­u­ral gas based power source • Storm water man­age­ment • On­site sewage treat­ment plant • Rain water har­vest­ing & water re­cy­cling • Low flow fixtures and au­to­matic sen­sors • CO2 sen­sors to en­able good lev­els of in­door fresh air • Ex­ter­nal AHUS with UV fil­tra­tion to pre­vent harm­ful

mi­crobes from en­ter­ing air con­di­tion­ing sys­tems • Lo­cally avail­able ma­te­ri­als for con­struc­tion • Non-haz­ardous paints, water proof­ing com­pounds, sealants, com­pos­ite wood prod­ucts and other low toxin emit­ting ma­te­ri­als for in­te­ri­ors • Con­crete in­ter­lock pavers and cob­ble­stones in hard­scapes. Th­ese have joints filled with tiny stones; water seeps in through the open graded gravel base and into the earth. The joints make th­ese pavers 100% per­me­able, which pro­motes the nat­u­ral water cy­cle. • Re­cy­cling of sheet­ing sys­tems • Roofs cov­ered with veg­e­ta­tion planted over water proof­ing mem­brane cre­ate ar­ti­fi­cially al­tered sur­faces by high ther­mal re­flectance and high ther­mal emit­ting • Over 30% of soil cover re­tained • Min­i­mized sur­face heat re­duc­tion • Land­scape main­tained through re­cy­cled water • Water sen­si­tive plant groups used • Or­ganic waste com­post for land­scap­ing • Dur­ing con­struc­tion, the top­soil re­moved was reused for land­scap­ing, and sed­i­men­ta­tion pit was pro­vided to avoid soil ero­sion in ex­ca­vated ar­eas. Other up­com­ing green con­struc­tion prac­tices/ tech­nolo­gies in­clude: • Glass fiber re­in­forced gyp­sum (GFRG) panel build­ing

sys­tems • Mono­lithic con­crete con­struc­tion sys­tem us­ing

Alu­minum Form­work • So­lar Air Con­di­tion­ing • Chilled Beams • High per­for­mance en­ve­lope (cav­ity walls that have two skins of brick with a hol­low space be­tween or dou­ble glass) • Wind Hy­brid So­lar Sys­tem

Though the ini­tial con­struc­tion of a green build­ing is 2-12% higher than a con­ven­tional one, how­ever, the green mea­sures and ma­te­ri­als used bring op­er­at­ing costs down by 30%.

Plaza roof top

En­ergy ef­fi­cient fa­cade - Hines


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