Case Studies

 

Proposed Office Development at 11, Charter road, Central

  

Office in Construction
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Notable Features
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Table form
Composite staircase
Hardiwall
Steel hoarding

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Basic Information
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Location: Central

Building Type: Office Building

Contract Period: 4/10/2000 – 6/7/2002

Contract Sum: ~HK 1 Billion

Site Area: 2,200m2

Gross Floor Area: 74,000m2

Client: HKL (11 Chater Road) Limited

Architect: LPT Architects Ltd.

Structural Engineer: Ove Arup & Partners

E&M Consultant: WSP Hong Kong Ltd.

Quantity Surveyor: WTP Partnership (HK) Ltd.

Main Contractor: Gammon Building construction Ltd.

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Table Form
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Table form was used to construct the slabs of the building. The formwork was divided into sections which consisted of steel plate and I beams. It was lifted up to the next floor by a special hoist as shown in the photos.
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Overview
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This project involves construction of a 28 storeys Grade A commercial building.
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Composite Staircase
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Staircases were constructed of metal and concrete. The metal part served as the formwork as well as the permanent structure of the staircase.
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Hardiwall
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In order to provide the solid feel and sense of security traditionally associated with masonry walls, dry wall plus infill is adopted. The “Hardiwall” Solid Wall System is an internal non-load bearing wall comprising light gauge galvanised steel stud framing, lined with fibre cement sheets and filled with a proprietary lightweight concrete core mix. It reduces structural design requirements due to lighter weight wall construction. Increased floor space can be achieved due to thinner walls. It is up to 3 times faster to install than a masonry wall. No wet trades are involved, which eliminates site mess on each floor. It reduces site waste, and therefore trades waste removal and dumping costs. It provides a very smooth flat finish and eliminates the need for plastering to finish the wall surface.

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Contact of Contractor
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Gammon Construction Ltd.

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Tel: (852) 2591 5253

 
 

Charter Road, Charter House (Update)
   

Overview

This project involves construction of a 28-storey Grade A office space and three floors of luxury retail accommodation.

The structure was constructed on a 6-day cycle.
 
Composite Staircases

The stairs came as 200 kg galvanized metal boxes with risers and reinforcing bars already in place. This system saves the need to construct and dismantle formwork.

Superficially the method seemed more expensive than traditional in situ construction using timber formwork, but the cost actually worked out the same because it produced a good surface finish in less time, which meant the contractor did not have to spend time and money on remedial works (source: The Journal of The Hong Kong Institution of Engineers, June 2002).
 
Table Form
Each table form measured about 12m by 3-4m and 41 tables were used for each quadrant of the slab. The tables are small enough to be handled by three to four man each.
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Low-Waste Buildings Technologies & Practices
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