FOREWORD

The recent developments in the construction Industry ranging from Green Mark Version
4 to Productivity and Constructability are strong signals for a change in the industry. We
are foreseeing great things to come from the industry in the future. We have progressed
from being green to being sustainable which encompasses the triple bottom line And more
importantly, wholesome changes are expected for the entire life cycle of a building from
concept design to post occupation. As a result, in the 2011 edition of the Green Building
Products and Technologies (GBPTs) Handbook, we have added in various exciting trends
that we anticipate would have a major impact on the industry, namely Building information Modelling, Constructability and Value management Such technologies will definitely assist in our efforts to achieve the 2030 target of 80% of existing buildings to be green.

Langdon & Seah
Singapore Pte Ltd.