Project Details:

  • Project: Green Hills – ONGC Telbhavan
  • Location: Dehradun
  • Client: ONGC Ltd.
  • Commencement Date: June 2012
  • Completion Date: Dec 2013
  • Architect: Hafeez Contractor
  • Green Wall Consultant: Ecogreen Landscape Technologies India Pvt. Ltd.
  • Materials used for creating the Greenery: ELT – Flexi Roof System 
  • Area of Green roof: 1,10,000 Sq.Ft.

Project Overview:

ONGC green roof concept model

Method Statement to Install Ecogreen-Flexiroof on steep slope

Considering the slope, weight on studs, stability of soil and system, we have suggested the following methodology for installation 40 to 75 degree slope or have height more than 13 meters.

For slopes up to 15 degrees:

  • Conventional system with drainage board, geo textile & growth medium

For slopes up to 45 degrees:

  • Insert panel holders in the studs provided
  • Lay ELT Drain board over surface
  • Fix aluminum strips vertically and secure by fixing in the studs
  • Fix soil stabilizers at a distance as per slopes
  • Lay growth medium
  • Lay lawn carpets of local species

For slopes above 45 degrees:

  • After waterproofing treatment, lay the drain board (by ELT) & the drain boards to be secured using the studs (by ELT), already fixed to the slab by others.
Mother slab
Waterproofed surface
Installation in progress
ELT drainage boards
Slopes and Valley formations

Maintenance of this green roof project is carried out reliably and successfully by ELT India since 2013.

Project Gallery: