This project involves the design and fabrication of a system for collecting rainwater. The aim is to recycle rainwater for flushing toilet.

During the first minute, the rainwater is drained off into the drain. The horizontal diversion valve with a ball locates inside, will automatically close in one minute as rainwater flows. Clean rainwater is diverted to rainwater barrel. When someone flushed the toilet, the sensor in water cistern transmits signal to activate water pump to pump rainwater from barrel to water cistern. Potable water from PUB will flow into water cistern if water level in barrel is low. This system does not require any human interference while it is under operation.

CleanCat is an innovative solar-electric powered, remote controlled catamaran, which skims on the water collecting floating debris. The 5 m long catamaran has a maximum speed of 3 knot. The vessel can operate closest to the shore. The debris float onto a conveyor, which then moves up into the trash net inside the trash bin located at the aft. The trash net enables easy removal of collected trash. Any one with less than an hour of training can operate the vessel having a radio control range of 400 m.

The vessel has been tested in sheltered seawater and the test results are extremely satisfactory. Primarily meant for the rivers, this design can be easily modified to suit different operational requirements e.g. cleaning reservoirs, ports etc.

This project is targeted at preserving old residential and commercial developments by challenging the plan of demolition by changing the façade so as to give these old buildings a new lease of life.

The proposed pre-fabricated façade with each component corresponding ecologically to our tropical environment. Two types of facades were designed in this project, one for commercial and the other for residential.

The atmospheric renewer is a sustainable and environmentally friendly residential development proposed near the heart of Singapore's retail hub. With the existing site condition and environmental influences as the concept, the corridors of the condominium are transformed into gardens in the sky, providing an eco-friendly statement efficiently without compromising its primary purpose of pedestrian commuting.

The garden corridor is an ecological system itself that incorporates rainwater management, thermal management, and reduction in sound transmission. Provision of habitat for special flora & fauna and finally a battery cell which harness solar power using P.V. panels cladded along the west façade of the building. This development turns conventional housing into environmental controller in urban Singapore and also to encourage reds (reduced energy developments).

Singapore is land scarce. The aim of the project is in the line with the Singapore Green Plan 2012 - to help achieve "zero landfill" by minimizing the amount of waste generated and recycling as much as possible.

The project involves the fabrication of a biogas tank to biodegrade food and garden wastes. The anaerobic process will produce methane gas, which can be used for cooking. The residues can be used as an aggregate for the construction of pavements and roads.