Page 65 - September 2015 Digital Construction Opportunities

GREENITIATIVES-cASE STudy Range office India’s biggest oil and gas explorer ONGC has selected ELT India’s roofing system for its iconic green building project in Dehradun. Increasing awareness of changing climatic with growth medium. Project Name: ONGC Green Building Project, Project Location: Dehradun conditions has raised the need to maintain Te methodology suggested for installation Principal Contractor: Shapoorji Pallonji & Co environmental efciency in all walks of life. of up to 40-75 slope or height of more than Supplier: ELT India o Thanks to technological advancements, 13 meters was: Product Supplied: ELT India Green Roof & o the availability of eco-friendly building For slopes up to 15 : Flexiroof materials has been on a constant rise. State- • Conventional system with drainage was later tested on the building. After owned Oil and Natural Gas Corporation board, geo textile and growth the testing process, what seemed like an (ONGC) while deciding to build a green medium impossible project became a reality due in o headquarters in Dehradun wanted a For slopes up to 45 : large part to the exceptionally lightweight project built with specialised construction • Insert panel holders in the studs nature of VYDRO® substrate and its novel materials. Te building practices not just provided smart water management properties. had to ensure structure’s sustainability • Lay ELT Drain board over surface VYDRO® substrate is easy to handle, faster but also help to bring the architect’s vision • Fix aluminum strips vertically and to install than conventional green roofng to life. Te idea was to create a fve-storey secure by fxing in the studs materials, and enables the creation of building in the shape of a mountain range • Fix soil stabilizers at a distance as per green roofs in locations where weight and and cover it with grass. slopes structural strength are a critical factor. The Principal Contractor for the PSU • Lay growth medium major approached ELT India to create the • Lay lawn carpets of local species MAINTENANCE STRATEGY o unconventional Greenary for the iconic For slopes above 45 : Te maintenance methodology put forth project project – which was designed • Afer waterproofng treatment, drain by ELT India to maintain the project’s by architect Hafeez Contractor. The board from ELT were laid and secured sustainable and eco-efficient nature project derived its name from its ability using the studs (by ELT), already fxed involved: to blendseamlessly with the surrounding to the slab by others • Grass health management Shivalik range. Te structure required an • Laying and fixing of first layer of • Trimming of vegetation ideal green roofing solution that could HDPE NET on the drain board. (by • Protection from pests and diseases match with its aesthetically superior ELT) • Repairing and replacement of grass features. Conventional green roof system • Laying and installing the VYDRO afer change of season if required was given though initially, but radical design substrate over the frst layer of HDPE • Addition of growth medium afer rains demandes a copmletely new solution to NET (by ELT) if required near valley formation cope up with a far steeper slope and weight • Fixing of Aluminum wire network Te project is the frst Green Building of combination. from stud to stud (by ELT) Dehradun with a Platinum rating from • Laying and fxing of soil stabilizer at IGBC. It has been registered with the ROOFING SOLUTION appropriate distance subject to slope United Nations Framework Convention on Considering the slope, weight on studs, (by ELT) Climate Change (UNFCCC) under Clean stability of soil and system, ELT India • Laying and installing ELT Growth Development Mechanism and is expected to suggested a refned methodology to create Medium over the VYDRO substrate generate 735 Certifed Emission Reductions the sustainable structure. Tough originally (by ELT) (CERs) every year for the organisation. Te the methodology was designed to cater to • Laying and installation of Lawn grass building with its green roof has not only slopes up to 45 only, afer understanding as per specifcations.(by ELT) scored impressively on parameters of energy o the project reality, ONGC adopted ELT efciency and water management but has India’s modifed methodology. Later, the Te soil-less growth medium system based also provided natural work environment to project was introduced to hydrophilic foam on VYDRO® substrate, developed by ELT people working there u SEPTEMBER 2015|construction opportunities 65