Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

Green building Congress Hyderabad - 2012

Green building Congress Green building Congress Hyderabad Hyderabad -- 20122012

Green FacadesGreen Facades

NandakumarNandakumar B SB SL&T ConstructionL&T Construction

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

WHAT IS FAÇADE

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

‡ Outer skin of building

‡ Made of RC, Bricks, Metal or Glass

‡ Aesthetics

‡ Weather proof

‡ Sound proof

‡ Shape & Identity

WHAT IS FAÇADE ?

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

WHAT IS FAÇADE ?

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

GLASS FAÇADE

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

‡ Outer skin made of Glass

‡ Most preferred type of facade

‡ 60% to 70% Glass in any commercial

buildings

‡ Allows day light into the building

‡ Curtain Walls, Structural Glazing,

Ventilated Facades, Double skin facades

etc.

GLASS FAÇADE

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

SUSTAINABLE GLAZING

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

SUSTAINABLE GLAZING

‡ ENERGY EFFICIENT

‡ Majorly influenced by facade

‡ USE OF RECYCLABLE MATERIAL

‡ Aluminum and glass

‡ USE OF REGIONAL MATERIAL

‡ Within 400km of the project location

‡ LOW VOC SELANTS AND ADHESIVES

‡ Less than 100gms/l

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

SUSTAINABLE GLAZING

‡ Weather proof

‡ THERMAL

‡ NOISE

‡ LIGHTING

‡ AESTHETICS

‡ ECONOMIC

‡ EFFICIENT

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

SUSTAINABLE GLAZING

‡ LESS SOLAR GAIN

‡ MORE DAY LIGHT

‡ LESS GLARE

‡ AMBIENT TEMP.

‡ RECYCLED MATERIAL

‡ OPTIMUM DESIGN

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

ECBC RECOMMENDATION

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

What is ECBC ?

‡ Energy Conservation building code

‡ Bureau of Energy Efficiency (BEE).

o Ministry of Power.

‡ India - 5 Climatic Zones

‡ Guideline - Fenestration, HVAC, Lighting etc.

‡ Chapter 4 – Building envelope

‡ LEED Recommends ECBC

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

Indian Climatic Classification

‡ WARM & HUMID

‡ Chennai/Mumbai/Kolkata

‡ HOT & DRY

‡ Ahmedabad/Jaipur

‡ MODERATE / TEMPERATE

‡ Bengaluru

‡ COMPOSITE

‡ Delhi/Lucknow/Hyderabad

‡ COLD

‡ Dehradun/Guwahati

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

Thermal performance of facade

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

Solar factor

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

SF Calculation with Shading Device

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

Max SF & U Value allowable

Climate specific Energy Conservation and Indoor thermal comfort measures

are detailed out in Table 4.3 (ECBC User Guide)

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

Requirements for sky light

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

Minimum VLT requirement

As the WWR is increased the Minimum VLT requirement is reduced.

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

GLAZING MATERIAL SELECTION

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

Thumb Rule FOR A GREENER FACADE

‡ Windows shall be optimally sized and placed

‡ Keep WWR < 40%

‡ Maximum windows towards North & South

‡ Minimum windows towards West and East

‡ Vary the glass w.r.t orientation if possible

‡ Use shading devices if required.

‡ Use more of Recycled Content

‡ Check VOC content of Sealants

‡ Use locally made materials

Our CapabilitiesB &F IC - L&T

Center for Excellence and Futuristic DevelopmentL&T ConstructionBuildings & Factories

Green Building Facilitation (Completed and Ongoing)

TC II- L&T Campus, Chennai

LEED NC – Certified (USGBC)

EDRC, L&T Campus, Chennai

LEED EB -Silver rated (USGBC)

CTS@ MEPZ, Chennai

LEED NC - Gold rated (IGBC)

CTS @ Kolkata

LEED NC - Silver rated (IGBC)

TC III@ L&T Campus, Chennai

LEED NC – Silver Rated (IGBC)

MDC@ Lonovala

LEED NC – Gold rated (IGBC)

CMRL @ Koyembedu, Chennai

LEED NC – Platinum Proposed (IGBC)

CTS @ Pune

LEED NC – Silver Proposed (IGBC)

Cognizant Technology Solutions @

Kolkata, Phase 2

LEED NC – Silver Proposed (IGBC)

TCS @ Kolkata

LEED NC – Platinum Proposed (IGBC)

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

Sustainable building consultancies (In house)

Sustainable Building Consultancy

Façade Engineering

Applied Research

Capacity Building

Larsen and Larsen and ToubroToubro ConstructionConstruction GBC HYDERABAD GBC HYDERABAD -- 20122012

OUR APPROACH