ZED is designing the first of 4000 planned residences in a new modern village that will support a new free trade zone near Lagos.  The firm worked to synthesize several programmatic requirements into multi functional elements of the pilot residence.  The main themes of security (both in property and energy), building efficiency, and meeting domestic requirements are carried throughout the design. 

First, utilizing security concerns to provide flood protection and improve the ocean views. Second, bringing in the light while keeping out the heat without blocking the views. Third, employing architectural zoning that works with mechanical control systems and passive cooling strategies to minimize energy usage. Fourth, integrating renewable energy systems to increase energy independence.

 

Energy security is a major concern for Nigerians, who are subject to the ups and downs of the country's unreliable electrical grid.  The pilot home will be an off-grid demonstration of renewable energy, proving to locals that there are alternatives to diesel burning generators to meet energy needs. 

Sleeping Tube and Light Box
The residence features two main divisions: the residential "sleeping tube" and the light box.  The division which serves two purposes.  First, the natural separation serves a domestic purpose, allowing the light box to serve as a venue for entertaining guests, while minimizing guests' view into the bedrooms for example. 

Functionally, the separation lends itself to building efficiency: for example, the light box can be shut down at night to minimize the nighttime cooling load.

The sleeping tube also features passive cooling elements, such as an extension of the sleeping tube beyond the glazing that eliminates direct solar gain and a series of gills that bring in appropriate amounts of light and air.  

Within the light box, a combination of glass walls with a louvered skin bring in plenty of light into the heart of the home while keeping out the heat.  "With the amount of sunlight we get in Nigeria, one should never need to turn on the lights during the day," remarks the client..

Secure Base
Property security is another concern.  However, rather than approach security as an "after construction" issue, ZED cleverly incorporated security features without making them grossly apparent at first glance. For example, thick masonry walls provide protection on the ground floor, while creating a raised plinth to lift the main area above potential flood waters and provide better access to ocean views.  

More examples of Custom Home Design at zeroenergy.com/customprojects.html

 

Draft Specification

The WaterSense program will focus on certification based upon criteria in three areas:

And third party verification is required for certification.

 

Comments are being solicited on the new standard until July 21, 2008. Suggestions and thoughts can be sent to watersense-newhomes@erg.com.