Lee's Gardens Redevelopment

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Works being done to facilitate the demolition of the old basement and the construction of substructure In order to have the old basement demolished and replaced by the construction of a new, as well as to make way and facilitate the construction of the new 50-storey tower block, the following works were being carried out that comprised the whole contract.
1. Demolition support and ground stabilization • A series of temporary supporting system mainly in the form of steel shore and bracing were erected before various stages of basement demolition. • Form a grouted wall along the site perimeter down to 3m below bedrock (average 25m deep) as a means of ground water control during excavation and construction of caissons. • Demolish part of the basement slab along the perimeter wall to give way for the construction of handdug caissons, which were used later as cut-off wall for the new basement structure. Totally 244 caissons of 1.2m diameter were constructed for the purpose.
Page 1 and 2: Construction of the Manulife Tower
Page 3 and 4: Block plan showing the building lay
Page 5 and 6: 1/F and 3/F Layout Plan Circular-sh
Page 7 and 8: Background Information about the Re
Page 9 and 10: Demolition of the old basement and
Page 11: 6. While doing the major substructu
Page 15 and 16: Later stages of basement demolition
Page 17 and 18: Arrangement of temporary support du
Page 19 and 20: New steel columns for the new build
Page 21 and 22: 2. Construction of new foundations
Page 23 and 24: Construction of caisson pile as cut
Page 25 and 26: Shoring support to stabilize the di
Page 27 and 28: Constructing the caisson foundation
Page 29 and 30: 3. Changing over and provisional wo
Page 31 and 32: • Demolish the remaining old base
Page 33 and 34: Install steel columns into the part
Page 35 and 36: Coupling arrangement to connect the
Page 37 and 38: Constructing the core wall at the l
Page 39 and 40: Gradual completion of the new groun
Page 41 and 42: Construction of the superstructure
Page 43 and 44: The steel frame was supported by st
Page 45 and 46: Structural steel frame before the e
Page 47 and 48: Forming the transfer truss
Page 49 and 50: Anchor frame embedded in core wall
Page 51 and 52: Temporary connecting clips to adjus
Page 53 and 54: Transformer for arc welding Cylinde
Page 55 and 56: Forming the composite floor slab Co
Page 57 and 58: Construction of the core wall using
Page 59 and 60: Erecting the Climb Form from the gr
Page 61 and 62: Detail of hydraulic rod and support
Page 63 and 64:
Stiffening ribs on sides of core wa
Page 65 and 66:
Construction of the Top-down Baseme
Page 67 and 68:
Excavation inside the basement Floo
Page 69 and 70:
Core wall Soldier pile wall for the
Page 71 and 72:
Forming the beam formwork using con
Page 73 and 74:
A lifting crane was provided for th
Page 75 and 76:
Bar coupler provided in the upper p
Page 77 and 78:
Placing of concrete in small quanti
Page 79 and 80:
4. Very complicated building servic
Page 81 and 82:
Installing the curtain - some diffi
Page 83 and 84:
The atrium after finished
Page 85 and 86:
Installation of the false ceiling w
Page 87:
End of Presentation
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Lee's Gardens Redevelopment

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