24.42 James Street Cost Report for Stabilisation Works December 2022 vA9655248 Redacted.pdf

Sprayed Concrete Permanent Stabilisation of Existing Batter
at Rear of
42 & 44 James Street, Northcote, Victoria
For
The City Of Darebin
Construction Cost Pre-Tender Estimate
Revised
Prepared By;
s.33(1)
Amiens Consulting Pty Ltd
2/87 Rostrevor Parade, Mont Albert North, Vic, 3129
19th December 2022

Stabilisation Of Existing Batter
42 James Street Northcote Vic 3070
Construction Cost Tender Estimate
Instructions Received
On further instructions received from FMG Engineering, revised construction cost estimates have been prepared for
the preferred proposal for the stabilisation of the existing batter located at the rear of Nos. 42 & 44 James Street,
Northcote.
The construction cost estimates have been prepared as a review of the FMG Drawings and Reports as follows:
a) Construction Issue Structural drawings S01 and S10 to S12 inclusive, dated 16th December 2022
b) Construction Issue Civil drawing C01 Rev B
c) Feature Survey Plan dated 30th December 2020, prepared by Landair Surveys.
d) Geotechnical Investigation Report dated 30th September 2022 prepared by FMG Engineering.
A site inspection was done on Saturday 17th December to further assess site conditions
Costs Summary
The estimated total construction cost of the proposed sprayed concrete permanent batter is $115,360 as shown in the
Summary and Details in Appendix “A”.
Basis of the Estimates
The cost estimates include allowances, separately identified, for the following:
 Preliminaries, Supervision and Builders Margin– 30%
 Consultant and Permit Fees for Construction Works – 15%
 Contingency - 10%
 Council Direct Costs – 7%
 GST – 10%
The cost estimates are based on the following scope and assumptions:
1. Access being freely available from both the East and West rear lanes reached from James Street.
2. The works being undertaken by a Single Contractor selected by competitive tender.
3. The construction work is undertaken in one stage with vacant possession of the Site
4. Rates and costs priced at Current Rates at December 2022
The estimate excludes allowances for:
 Staged construction works
 Works outside the nominated site areas
 Restricted work hours
 Legal Fees and fees incurred in preparation of preliminary reports
 Works to the buildings on Nos #42 and #44 James Street and Nos #1 and #3 Campbell Grove.
 Alterations to existing drains, water, electricity, or telecommunication services
Out of Scope
s.33(1)
s.33(1)
Amiens Consulting Pty Ltd
42 James St Northcote Batter Stabilisation
Construction Cost Tender Estimate
Page 1
Amiens Consulting

Stabilisation Of Existing Batter
42 James Street Northcote Vic 3070
Construction Cost Tender Estimate
APPENDIX “A”
ESTIMATE SUMMARY & DETAILS
42 James St Northcote Batter Stabilisation
Construction Cost Tender Estimate
Appendix “A” Page 1
Amiens Consulting

Sprayed Concrete Permanent Stabilisation of Existing Batter
42 James Street Northcote Vic 3070
Construction Cost Estimate
Total Cost Summary
Ref.
Item/Trade
$
Permanent Stabilisation Of Batter Works Contract
A
Site Preparation, Excavation, Filling, Nailing, Surfacing, Etc.
$ 44,590
B
Retaining Walls & Fencing
$   2,800

C
Drainage
$   10,650

D
Landscaping
$   1,560

Stabilisation Works Trade Totals
$   59,600

E
Preliminaries and Builders Margin - 30%
$   17,880

Total of Anticipated Contract Works
$   77,480

F
Consultants Fees for Construction Works - 15%
$ 11,622

G Contingency - 10%
$   8,910

H Council Direct Costs - 7%
$   6,861

Nett Construction Cost
$   104,873

I
GST - 10%
$   10,487

Total of Project Works
$   115,360

The estimate is based upon the following documents:
1
Construction Issue drawings S01 and SK10 to S12, dated 30th September 2022 prepared by FMG Engineering
2
Construction Issue drawing C01 Rev B prepared by FMG Engineering
3
Feature Survey Plan dated 30th December 2020, prepared by Landair Surveys
4
Geotechnical Investigation Report dated 30th September 2022 prepared by FMG Engineering
5
The estimate is based upon the works being undertaken by a Single Contractor selected by competitive tender.
The construction work is undertaken in one stage  with vacant possession of the Site
The estimate has been priced at Current Rates at December 2022
6
The estimate is based on access being freely available from both the East and West rear lanes from James Street
7
The estimate excludes allowances for:
Staged construction works
Works outside the nominated site areas
Restricted work hours
Legal Fees and fees incurred in preparation of preliminary reports
Works to the buildings on Nos #42 and #44 James Street and Nos #1 and #3 Campbell Grove.
Alterations to existing drains, water, electricity or telecommunication services
42 James St Northcote Batter Stabilisation
Revised Construction Cost Pre-Tender Estimate
Appendix "A" Page 2
Amiens Consulting P/L

Sprayed Concrete Permanent Stabilisation of Existing Batter
42 James Street Northcote Vic 3070
Construction Cost Estimate
INSTALLATION OF A CONCRETE PERMANENT BATTER
Item Details
Item
Ref.
Description
Unit
Qty
Rate
$
Earthworks, Permanent Batters, Fencing and Drainage Works
Site Preparation, Excavation, Filling, Nailing, Surfacing, Etc.
Preparation
1 Clear site of all surface rubbish and disposal
m2
57
30.00 $     1
  ,710
2 Protect and temporary supports and shoring to timber retaining wall and foundations to
#1 Campbell Grove
lin m
4
100.00 $        400

3 Protect plants and landscaping as necessary to garden areas of Nos 1 & 3 Campbell
Item
$        400

4 Protect and temporary supports and shoring to the fence to rear of Nos 1 and 3
lin m
10
20.00 $        200

5 Allow for protecting the existing foundations to Nos 42 & 44 James Street
lin m
20
35.00 $        700

Excavation & Filling
6 Excavate to clear vegetation to flat grassed area south of #42 James Street and dispose
m2
18
20.00 $        360

7 Excavate to clear vegetation to battered area and dispose
m2
48
30.00 $     1
  ,440
8 Excavate to form platform for new crossover
m2
8
25.00 $        200

9 Allow necessary excavation, backfilling, and crushed rock base courses for working
platforms to allow for boring and pumping equipment and subsequent making good
Item
$     3
  ,000
10 Excavate to reduce levels to form slope including using excavated material as filling to
form batter ( assumed up to 400 mm excavation and filling over area)
m2
48
30.00 $     1
  ,440
11 Consolidate and trim surface of filling or excavation to batter
m2
48
25.00 $     1
  ,200
Permanent Batter
$            -
12 Allow for preparation of surface, lay layer of SL81 reinforcement and provide 120 mm
shotcrete 32 pa concrete layer as permanent covering of batter
m2
48
120.00 $     5
  ,760
13 Allow for making good to existing perimeters
lin m
32
15.00 $        480

Soil Nailing
14 Encapsulated, bored and grouted soil nail 3000 mm long with galvanised threaded nail
bar and cap with washer and nut and tightened to approved tension as shown on
drawing S10 T2.
No
46
550.00 $   2
  5,300
15 Extra for concrete encasing of nail nut and heads
No
46
20.00 $        920

Concrete Crossover
16 150 mm Reinforced concrete ground crossover slab to falls with non-slip finish and
F72 fabric reinforcement on 75 mm crushed rock compacted on consolidated
excavated surface
m2
8
110.00 $        880

17 Make good to shotcrete batter
lin m
4
50.00 $        200

Site Preparation, Excavation, Filling, Nailing, Surfacing, Etc. Total
$   4
  4,590
Retaining Walls & Fencing
Fencing
18 Work to remove and replace existing barrier to laneway rear of #42 James Street
Item
$     1
  ,000
19 Allow for fence/barrier to lower laneway
Item
$     1
  ,000
20 Repair and make good existing paling fence
lin m
6
75.00 $        450

21 Repair as necessary and make good existing fence to Nos 1 & 3 Campbell Grove
lin m
10
35.00 $        350

Retaining Walls & Fencing - Total
$     2
  ,800
42 James St Northcote Batter Stabilisation
Revised Construction Cost Pre-Tender Estimate
Appendix "A" Page 3
Amiens Consulting P/L