Case Studies

 

Residential Development at Aldrich Bay Reclamation

 
Notable Features
 
bullet Application of system formwork
bullet Reuse of steel panels
bullet Use of precast staircase
bullet Use of precast bay windows
bullet Use of Hardi-Wall system

Basic Information
 
bullet Location: Shau Kei Wan
bullet Building Type: Residential
bullet Contract Period: August 99 to July 2001
bullet Client: Uttoxeter Ltd.
bullet Architect: Wong Tung & Partners Ltd.
bullet Structural Engineer: Ove Arup & Partners Ltd
bullet E&M Consultant: J. Roger Preston Ltd.
bullet Quantity Surveyor: Davis Langdon & Seah (HK) Ltd.
bullet Main Contractor: Dragages at Travaux Publics
bullet Contract Sum: HK$ 900 million

Overview
 
The project involved the construction of four 49 to 56 storey high residential blocks with basement and clubhouse. There were 864 domestic units.
 

System Formwork
 
Steel formwork was used to construct the structural walls of the building while “Mivan” aluminum formwork was used to construct the slabs, some of the bay windows and a few walls. A 4-day concreting cycle was adopted after the contractor had been familiarized with the construction technique. Speed is one of the advantages of using system formwork. The formwork can be reused for 100 times and waste is reduced. Besides a better quality of surface finish is achieved.
 

Storage of aluminium formwork

 

Aluminium formwork

   
Precast Elements
 
Precast staircases and bay windows were adopted for this site. The cost was more or less the same as the in-situ method. The site was more tidy when compared with a site using in-situ method. A better quality of surface finishes was achieved. Both construction and finishing waste were reduced by adopting precast elements.
 

Precast bay window

Hardi-Wall System
 
The HardiWall Solid Wall System is an internal non-loading bearing wall comprising light gauge galvanised steel stud framing, lined with HardiWall fibre cement sheets and filled with a proprietary lightweight concrete core mix. It is an Australian product.
 

 
The HardiWall System can provide the solid feel and sense of security traditionally associated with masonry walls. The surface finish of the wall is very smooth and flat and superior to traditional plastered walls. It has the advantage of greater ease of construction and thus increasing the speed of fit-out. There is potentially large savings in reduction of engineering dead loads as the system is approximately one third the weight of rendered masonry materials. 
 
The HardiWall System removes wet trades and the necessity to chasing services and hence decreases the generation and disposal of waste and debris.General housekeeping is also improved by removing wet trades and minimizing debris.The HardiWall system is more expensive than traditional masonry wall by 5-10%.
 

Contact of Contractor
 
Dragages at Travaux Publics (HK) Ltd.
11/F, Island Place Tower, 510 King's Road
North Point, Hong Kong
Tel: (852) 2511 4261
Fax: (852) 2588 1979
 

 

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