Developer: Shangri-la Hotels & Resorts
Main Con: China State Construction Engineering Corporation
Architect: Tange Associates Asia Pte Ltd
Date Completed: 2012
About the Project:
Orchard Gateway is a shopping mall in Orchard Road, Singapore, which connects Orchard
Central Mall and 313 @ Somerset together. The mall is part of an integrated development
which includes a hotel and an office tower. The hotel consists of 500 rooms and is linked
to the office tower by a glass tubular overhead bridge.
Netatech Engineering partnered with local reputable landscape contractor, Garden Beau in designing and installing an advance irrigation system for the landscape, as well as the green wall system’s watering needs using Harvested Rain Water. Working closely with the project’s M&E consultants, the design for the Rain Harvesting Tank and the Irrigation Pump Room was uniquely designed in order to maximize the use of space in the building. Placed in a semi-circle void space of the building, the Rain Tank and Pump Room sits on steel structures that elevates them from the landscape levels below. This helps lower the Booster Pump’s pressure ratings, and reduce the power consumption needed to pump the water out for irrigation.
The system was designed using a full drip system, therefore the pressure ratings from the pump is significantly reduced for this operation as compared to other form of auto-irrigation because drip requires lesser pressure to emit water through the water outlets of the pipe. The water is also delivered with precision to the root zones of the plants with an efficiency rate of 95%, minimizing losses from evaporation and wind load at the open spaces of the building.
Some water saving features included an installed Rain Sensor at an unblocked location in the main open landscape area on Level 10, assisting the system in suspending irrigation operations during rain events. An accurate measure of the level sensor by Netatech Irrigation Designers determines that top-up water from domestic source do not exceed the need of one day’s irrigation while waiting for possible rain events to fill up the tank.
Prior to this water conservation approach, an online monitoring Controller was also installed into the system to further minimize the chances of water losses through burst drip lines (which are common during the early completion of the project) or damaged/leaked water supply pipes. This enables Netatech Maintenance Team to identify the possible locations of the leaks and attend to the repairs as soon as they receive alert notification sent out by the Irrigation Controller. The system was able to assist the client in saving time, money and effort when it comes to rectifying any fault in system, along with its maintenance processes.