Introduction

All construction works, no matter building or civil engineering projects, will need site offices. They are usually erected or put on the site at the beginning of the project and will be dismantled and removed when the project is completed. The life spans of the construction site offices in Hong Kong is usually 2 to 4 years, thus, they are often treated as temporary facilities and are overlooked in sustainable features during the building process.

However, analysis of thermal performance of the existing site offices indicates that there is lost of saving opportunities in the current practices. Evaluation of the lighting systems also shows that a green site office can operate with lower costs and increased worker satisfaction. Typical structure of the construction site offices in Hong Kong are pre-fabricated structure and a container-based structure.

Nowadays, these two types of site offices are commonly found in Hong Kong because they are quicker and easier to erect than permanent buildings and the manufacturing and construction methods are less expensive.

Pre-fabricated	Container-based

Gammon tried a different construction method in her Northern Tsing Yi site built in 2003. She added green features on the site office, this site office is also known as Green Site Office.

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