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First Floor Columns& Second Floor Slab
Prepared by
Elton Gallimore
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Scope of Works
• Area of construction: 86.4m x 46.8m grid= 4043.52 m2.
• To construct 39 First Floor reinforced steel concrete columns at 60 x 30 cm to a height of 2.10m.
• To construct a Second Floor Slab to an area of 4043.52 m2 thickness of 250mm. Height from first floor slab 2.45m
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Area of Construction (zones)
15.6m
7.2m
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Area of construction (sections)
46.8m
86.4m
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Section Breakdown
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Safety Platform AssemblyAccess to workableAreas will be viaTemporary stairsWhich be movedAccording to Construction schedule
Week one Week two
Week Week
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Zone 1 Column formwork• Sections 1-9 Column
formwork arrangement with re bar
• 3 gangs (2 men per gang), 1 gang per column
• 1 column + rebar 30mins• 12 columns = 2hrs.
Zone 2 Column formwork• Sections 10-18 Column
formwork arrangement with re bar
• 4 gangs (2 men per gang), 1 gang per column
• 1 column + rebar 30mins• 9 columns = 1.5hrs.
200kg of 10mm steel rebar per m3 of concrete (Peri requirements)
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Zone 3 Column formwork• Sections 19-27 Column
formwork arrangement with re bar
• 4 gangs (2 men per gang), 1 gang per column
• 1 column + rebar 30mins• 9 columns = 1.5hrs.
Zone 4 Column formwork• Sections 30-34 Column
formwork arrangement with re bar
• 4 gangs (2 men per gang), 1 gang per column
• 1 column + rebar 30mins• 9 columns = 1.5hrs.
200kg of 10mm steel rebar per m3 of concrete (Peri requirements)
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Column formwork detail
Positioned to monolithic kickers from ground floor columns
Firs
t fl
oor
Gro
und
floor
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Column formwork Sequence
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Column formwork assembly zone 1
Retaining wall
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Column formwork assembly zone 1
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Column formwork assembly zone 1
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Zone 1 Ready for pour / first floor slab construction still in progress
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Zone 1 & 2 Concrete pour complete
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Assembly of Peri LIWA lightweight panel
Zone 1
• 4 sections of wall formwork to be
assembled
• 1 gang (2 men) per wall section
• 15 mins per m2
• 111.72 m2 approx. 1hr 45mins.
Zone 2
• 3 sections of wall formwork to be
assembled
• 1 gang (2 men) per wall section
• 15 mins per m2
• 35.28 m2 approx. 45 mins.
Zone 3
• 3 sections of wall formwork to be
assembled
• 1 gang (2 men) per wall section
• 15 mins per m2
• 35.28 m2 approx. 45 mins.
Zone 4
• sections of wall formwork to be
assembled
• 1 gang (2 men) per wall section
• 111.72 m2 approx. 1hr 45mins.
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LIWA lightweight panel concrete pour
Zone 1
• 4 sections of wall to be poured;
• 2 sections of 15.6 x 0.30m @ 2.45m
height
• 2 sections of 7.2 x 0.30 @ 2.45m height
• Amount of concrete required 33.5 m3
Zone 2
• 3 sections of 7.2 x 0.30m @ 2.45 height
• Amount of concrete required 31.8 m3
Zone 3
• 3 sections of 7.2 x 0.30m
@ 2.45 height
• Amount of concrete
required 31.8 m3
Zone 4
• 4 sections of wall to be
poured;
• 2 sections of 15.6 x 0.30 @
2.45m height
• 2 sections of 7.2 x 0.30 @
2.45m height
• Amount of concrete
required 33.5 m3
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2.45m
First floor slab
• 90 panels of Skydeck per section
• Panels @ 1.50 x 0.75
• 810 panels for each zone
• 1.125m2 per section
150 kg of steel rebar for every m3 of concrete (Peri requirements)
Skydeck slab formwork assembly
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Beams and slab rebar
Beams integrated into slab formwork
Beam layout for each zoneSection of slab rebar
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Framing and shear wall assembly
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Skydeck slab formwork assembly
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Zone 1 Skydeck slab panels & beam formwork assembled, ready for concrete pour
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Zone 2 slab concrete pour complete
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Zone’s 3 & 4 column formwork assembly and pour, Zone 3 wall assembly and pour
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Repositioning of plant machinery
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Zone 4 shear wall assembly and pour/ Zone 3 Slab concrete pour complete
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Zone 4 slab concrete pour complete
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Handover