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Site Safety Forum 2017 for Works Contracts and Property Services Contracts
Precast Top slab and manhole shaft
Precast Top Slab of Water Tank Cast in-situ VS Precast Top Slab
Typ./F
4 days
4 days
Original
2 days R.C .
Supporting Key
Lifting Point
+ 2 days
Cast in-situ Top slab and manhole shaft
Enhanced Proposal
R.C . Supporting
Key
. . . .
. . . . . . . . . .
. . . . . .
2 days
Cast in-situ Top slab
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Comparison of Traditional Cast in-situ top slab and Precast Top Slab
Cast In-situ Top Slab Precast Top Slab
Safety • Activity in Confined Spaces Dismantle Formwork Transportation of scaffolds • Higher temperature in water tank
• Reduction construction activity in Confined Spaces • Prevention of Heat Stroke
Quality Control Moderate Easier
Environmental Formwork & Falsework Construction Waste
Noise
Formwork & Falsework Construction Waste
Noise
Time Moderate A bit Faster (Parallel Construction)
Cost Moderate More and less the same
Water Tank Wall Stem Precast top slab
Precast Top Slab of Water Tank
Original Fixed temporary protective canopy as stated in contract
- Enhancement - Foldable temporary protective canopy
clamping on parapet wall at 1/F was proposed and adopted
``
Enhancement of Temporary Protective Canopy
Advantages: • Foldable protective canopy facilitate lifting works adjoining
to building • Reduce construction works at height • Save time for installation works • Reusable at other projects
• Insert methods for Protective Canopy
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Enhancement of Temporary Protective Canopy
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Provision of Steel mesh for Slab Opening
Install of steel mesh at Slab Opening before Concreting
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Provision of Steel mesh for Slab Opening
Placed Plywood over openings Placed Steel covers at slab openings
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Innovative Safety Wailing
Typical Safety Wailings at Wall Openings
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Safety measure for window opening
800mm – 1400 mm at Wall openings
Innovative Safety Wailing
Advantages: ???
• For openings with difference sizes
• The concrete defects at openings can be repaired without removing the wailings
• No anchor bolts required and subsequence repairing works
• Observable if missing
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Anti Slip Measure for Ramp (Material Hoist)
Two wheel hand trolley with hand break
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Safety Facilities at Fork Lift
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Safety Innovative ( RFID) • RFID application on plant speed monitoring
• Instant push message
• Information of plant, operator, location,
time, etc.
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