identify and produce estimated costs for projects

N. PRESTON, M. MARTIN CERT IV ESTIMATING 2012

Part Lesson 4 – Slab on Ground

IDENTIFY AND PRODUCE ESTIMATED COSTS FOR PROJECTS

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

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

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

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

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

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

N. PRESTON, M. MARTIN CERT IV ESTIMATING 2012

ITEM PARTICULARS UNIT QUANRATE $

C Concrete beams poured in trenches

m³

length

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

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

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

N. PRESTON, M. MARTIN CERT IV ESTIMATING 2012

ITEM PARTICULARS UNIT QUANRATE $

Integral Finishes

D Steel trowel finish to floor slab

m²

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

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

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