n. preston, m. martin cert iv estimating 2012 part lesson 4 – slab on ground identify and produce...
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N. PRESTON, M. MARTIN CERT IV ESTIMATING 2012
Part Lesson 4 – Slab on Ground
IDENTIFY AND PRODUCE ESTIMATED COSTS FOR PROJECTS
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N. PRESTON, M. MARTIN CERT IV ESTIMATING 2012
WORKED EXAMPLE – FROM P 82 SECTION 2 IN TEXT
• Measure and extend in accordance with the ASMMBW Edition 5
• Specification Notes
• • All concrete work to be 2OMPa
• • I 0mm Diameter bar: 0.616 kg/m
• • All stirrups to have 100mm hook end allowance to each end
• • Allow one layers of F82 fabric to ground slab and one layer of4F 12TM trench mesh to edge beams
• • Allow `Z' bar of 400mm long, 200mm and 300rnm cog ends at 500mm centres to all perimeter edge beams only
• • Allow 50mm concrete cover to all reinforcement
• • Allow steel trowel finish to all concrete surface
• • All formwork to be Class 4
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N. PRESTON, M. MARTIN CERT IV ESTIMATING 2012
FIRST LETS CLARIFY NO. ‘S
• 10.000m
• 4.400m
• 500mm / 120mm
• 200mm
• 400mm / 200mm
• 200mm / 400mm / 200mm
• 200mm / 400mm
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N. PRESTON, M. MARTIN CERT IV ESTIMATING 2012
WHAT WILL DIFFER TO THE TEXT
• The descriptions will be the same
• But some working out will be different
• So I suggest you make a new copy on a new P10
• Then insert it into your text as a sample
• Also note, my items will all appear up the top of the page, YOU will continue yours as you now know, from page to page
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N. PRESTON, M. MARTIN CERT IV ESTIMATING 2012
FIRST ADDRESS BEAM SIZE
• We assume the angle here is 45°
• Therefore the 200 width will equal the 200 height
• Therefore for ease of calculation, we use ½ this width and extend the base size to create a rectangle
• Making it now 500mm wide for future calc’s
• Similarly the central beam applies to both sides making it 600mm wide
New beam width
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N. PRESTON, M. MARTIN CERT IV ESTIMATING 2012
ITEM PARTICULARS UNIT QUANRATE $
Concrete
A Preamble ommited Note
Below Ground Floor 20MPA RC Concrete
B 120mm Slab Poured on Ground (100m2)
m³
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N. PRESTON, M. MARTIN CERT IV ESTIMATING 2012
ITEM PARTICULARS UNIT QUANRATE $
Concrete
A Preamble ommited Note
Below Ground Floor 20MPA RC Concrete
B 120mm Slab Poured on Ground (100m2)
m³ 12
10.0
10.0
0.12 12.00
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N. PRESTON, M. MARTIN CERT IV ESTIMATING 2012
ITEM PARTICULARS UNIT QUANRATE $
C Concrete beams poured in trenches
m³
length
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N. PRESTON, M. MARTIN CERT IV ESTIMATING 2012
ITEM PARTICULARS UNIT QUANRATE $
C Concrete beams poured in trenches
m³
length
(10.00 - 0.50 etc) 9.50 + (external)
9.50
9.50
9.50
38.00
4.20 + (internals)
0.60
4.20
4.20
4.20
17.40
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N. PRESTON, M. MARTIN CERT IV ESTIMATING 2012
ITEM PARTICULARS UNIT QUANRATE $
C Concrete beams poured in trenches
m³
length
(10.00 - 0.50 etc) 9.50 + (external)
9.50
38.00 9.50
0.50 9.50
0.38 7.22 38.00
4.20 + (internals)
0.60
4.20
4.20
4.20
17.40
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N. PRESTON, M. MARTIN CERT IV ESTIMATING 2012
ITEM PARTICULARS UNIT QUANRATE $
C Concrete beams poured in trenches
m³ 12
length
(10.00 - 0.50 etc) 9.50 + (external)
9.50
38.00 9.50
0.50 9.50
0.38 7.22 38.00
17.40 4.20 + (internals)
0.60 0.60
0.38 3.97 4.20
11.19 4.20
4.20
17.40
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N. PRESTON, M. MARTIN CERT IV ESTIMATING 2012
ITEM PARTICULARS UNIT QUANRATE $
Integral Finishes
D Steel trowel finish to floor slab
m²
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N. PRESTON, M. MARTIN CERT IV ESTIMATING 2012
ITEM PARTICULARS UNIT QUANRATE $
Integral Finishes
D Steel trowel finish to floor slab
m² 100
10.00
10.00 100.00
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N. PRESTON, M. MARTIN CERT IV ESTIMATING 2012
ITEM PARTICULARS UNIT QUANRATE $
Integral Finishes
D Steel trowel finish to floor slab
m² 100
10.00
10.00 100.00
Formwork
E Class 4 formwork to vertical face of footing beam, partially above ground, measured full height
m²
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N. PRESTON, M. MARTIN CERT IV ESTIMATING 2012
ITEM PARTICULARS UNIT QUANRATE $
Integral Finishes
D Steel trowel finish to floor slab
m² 100
10.00
10.00 100.00
Formwork
E Class 4 formwork to vertical face of footing beam, partially above ground, measured full height
m² 20
4 @ 10.00
0.50 20.00
Reinforcement omitted – Refer to P 85 in text