1. Application for Greywater

... from showers and bathtubs can be used for flushing toilets in most European and Australian jurisdictions, and in US jurisdictrions adopting the International Plumbing Code. A commercial example would be ...

2. Energy Conservation Overview

... California began implementing energy-efficiency measures in the mid-1970s, including building code and appliance standards with strict efficiency requirements. During the following years, California''s ...

3. Common Recyclables

... of plastic, they each carry a resin identification code, and must be sorted before they can be recycled. This can be costly; while metals can be sorted using electromagnets, no such ''easy sorting'' capability ...