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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

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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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