Other FeaturesUser-friendly interface

Written in Visual Basic

Operable on Windows Platform

Small Size

Only require for 20 Mb of disk space

Uniqueness

The first LCA / LCC tool designed for Hong Kong constructionpractises

Large amount of research works conducted during the design stageof the tool

Follow ISO 14040 Standards Internationally accepted frameworkfor LCA

Who Can Use the Tool?The tool is designed for the developers, architects, engineers, researchers, surveyors and other building professionals to assess building life cycle performance. The assessment helps these professionals to optimise their design.

Where Can I Get More Information?For further information, please contact Energy Efficiency Office, Electrical and Mechanical Services Department. Contact details are:

Address:

Electrical and Mechanical Services Department

Government of the Hong Kong Special Administrative Region, 3 Kai Shing Street, Kowloon, Hong Kong.

Tel : 2881 1562

Fax : 2890 6081

Email: lcea@emsd.gov.hk

Homepage: http://www.emsd.gov.hk

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Life Cycle Assessment (LCA) and Life Cycle Cost (LCC) Tool

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Commercial Building Development

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Output of the Results The assessment results can be exported to either chart or spreadsheet format.

The tool allows user to obtain results in particular stage of life cycle. The stages include the as-built stage, operating stage and end-of-life stage.

Separate results can also be retrieved for different parts of the building, such as the foundation, the building fabric and the services.

Pull-down menu allows user to specify case and building part

Weighted global warming score

Energy use

Stage or Total Life Cycle Cost

Total LCA / LCC Score

Clear and well-organised result

Pull-down menu allows users to specifly different life cycle stage.

Stacked bars showing the performance score summed up from 10 different categories

Comparison between current case, reference case and althernative case.

Graphical representation showing the result of life cycle assessment

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Want to Conduct LCA and LCC Analysis?Conducting Life Cycle Assessment (LCA) and Life Cycle Costing (LCC) for commercial buildings is a complicated process. Although there are a few tools available in the market, their database suitable only to Western Europe and North America. A new LCA / LCC tool has now been made available to you to assess building developments in Hong Kong.

Three portions: Foundation, Floor and Services. Four levels hierarchy for data management

Under the framework of the tool, the modelled building is divided into three portions, namely the Foundation, Floor and Services. Each of these portions needs to be further sub-divided into various components and elements for detail analysis of the building.

LCA / LCC Tool for Hong Kong The LCA / LCC tool was developed by Ove Arup and Partners HK Ltd based on the findings of a consultancy study commissioned by the Electrical and Mechanical Services Department (EMSD) of the HKSAR Government. It facilitates you to conduct a formal LCA, LCC and energy calculation of commercial developments with its tailor-made database, which is suitable for Hong Kong construction practices.

The tool allows the building developer / designers to assess the environmental impacts and cost implications throughout the life cycle of a building. It quantifies the environmental and financial performances of the building design.

Framework of the ToolSince evaluation of life cycle impacts and life cycle cost of a high-rise commercial building involves a large quantity of data for calculations, a systematic approach is used in the program to organise the data with different levels.

Buildings Portions: Components: Elements:

Foundation

Foundation 1 RC Pile

Foundation N RC Beam

Floor

Floor 1 Tiles

Floor N Partitions

Services

HVAC AHU

Electrical Chiller

Fire Pipe

Lighting

Building

Portion

Element

Component

DatabasesThe database contains life cycle impact profiles for a set of commonly-used construction materials for the user to select. Users are only required to specify basic parameters like dimensions and mass of the building construction as data input.

Some 20 elements have been developed for Foundation and another 40 and 200 elements have been developed for Floor and Services respectively. In case no suitable elements can be found in the database, the user may still enter an element as a Generic Element.

Environmental Impact CategoriesThe assessment follows international standard LCA analysis framework with the environmental impacts characterised into the following categories:

1. Abiotic depletion

2. Global warming

3. Ozone depletion

4. Human toxicity

5. Fresh water ecotoxicity

6. Marine aquatic ecotoxicity

7. Terrestrial ecotoxicity

8. Photochemical smog

9. Acidification

10. Eutrophication

11. Embodied energy (supplementary)

12. Waste generation (supplementary)

FunctionsThe tool allows user to compare the current design to a reference design and an alternative design.

By changing the design or the building materials, it is possible to make comparisons for any one or all of these measures in different life cycle stages.

With the comparison function, the user is able to optimise the building and system designs at the design stage and find out the most suitable and sustainable way.

Graphical comparison of different building design schemes.