Proposed Residential Redevelopment at I.L. 8290 Stubbs Road
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| Notable Features | |
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Application of Aluminium formwork |
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The wastage of aluminium formwork was nearly zero. |
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The wastage of reinforcement was 10%. |
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The wastage of concrete was 5%. |
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The contract sum for aluminum formwork was HK$13,000,000. |
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The material cost is HK3,000/m2 |
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The labour cost was HK$350 per manday. |
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Use of gondola to apply external finishes |
| Basic Information | |
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Location: Stubbs Road, Hong Kong |
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Building Type: Residential |
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Contract Period: 4/8/1999 – 22/8/2001 |
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Gross Floor Area: 55,654m2 |
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Client: Highdiff Investment Limited |
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Architect: Dennis Lau Wing Kwong Architects & Engineers (H.K.) Ltd. |
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Structural Engineer: Can West Consultant Ltd. |
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E&M Consultant: Associated Consultants (International) Ltd. |
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Quantity Surveyor: Davis Langdon & Seah (H.K.) Ltd. |
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Main Contractor: Hip Hing Construction Co., Ltd. |
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Contract Sum: HK$ 919 million |
| Overview | ||||
| Proposed residential redevelopment at I.L. 8290 Stubbs Road was a residential building project and the following major items were executed under this contract: | ||||
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| External Finishing | ||||
| External working platform and gondola were used to apply external finishes. This saved the waste of bamboo scaffolding. | ||||
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| Aluminium Formwork | ||||
| One set of Mivan formwork was used to achieve a four day floor cycle for construction of the 61 storeys block. Additional time was required for construction of the initial floors to allow for setting up of the Mivan formwork system and to initiate the other trades in the procedures which were required to meet the target floor cycle. The Mivan formwork can be reused for over 100 times. | ||||
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| Contact of Contractor | ||||
| Hip Hing Construction Co., Ltd. | ||||
| 29/F, New World Tower, 16-18 Queen's | ||||
| Road Central, Hong Kong | ||||
| Tel: (852) 2525 9251 | ||||
| Fax: (852) 2845 9295 | ||||
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| Erection of Formwork | ||||||
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| Wall panels are erected, in both directions, from internal corners. Wall panels are connected using standard pins and wedges. The wall ties and sleeves are also installed at this stage. On completion of the wall panels, the top panels are added. The bottom of the wall panels are lined and fixed in position using timber battens at alternative joints. The vertically of the walls are checked. | ||||||
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| Soffit lengths and soffit corners are pinned to the top of the top panels and beam sides. A deck panel is pinned to the corners. This gives the line of the deck beams (mid beams and end beams). The mid beams and end beams are connected to deck prop heads and pinned to the corner deck panel. The remainder of the deck panels are then dropped into position between the soffit lengths and deck beams. | ||||||
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| A kicker channel is fixed to the top of the external wall panels. Two sets of kickers adopted as one set remains in place after casting to connect the next lift of wall panels. Kickers are checked for alignment prior to casting. | ||||||
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| Striking of Formwork | ||||||
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Vertical Formwork can normally
be struck after 12 hours. After removal of timber battens and
sufficient pins and wedges. Specialist panel pullers are used to
strike the wall panels. After cleaning, the panels are moved to the
next section for immediate oiling and erection. The wall ties and
sleeves are removed at this stage. Where panels are being moved
vertically up, a slot opening nominally 650 x 100mm is formed in the
slab. After the movement of the formwork, the opening is concreted.
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