Flinders River Agricultural Project Richmond Shire Council Request for Tender 22 August 2019 – Rev 1 Page 1 of 80 Request for Tender Flinders River Agricultural Project Engineering Design of the Bulk Water System ENQUIRIES TENDER DOCUMENT ACCESS TECHNICAL QUERIES TENDER SUBMISSION TO: Stewart Peters 0403 154 080 [email protected]John Grabbe 0417 649 965 [email protected]Peter Bennett 07 4719 3377 [email protected]BRIEFING 4 September at 10:00 am at Richmond ISSUE DATE CLOSING DATE 24 August 2019 23 September 2019
80
Embed
Flinders River Agricultural Project · Flinders River Agricultural Project Richmond Shire Council Request for Tender 22 August 2019 – Rev 1 Page 7 of 80 response may be accepted
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 Page 1 of 80
Request for Tender
Flinders River Agricultural Project Engineering Design of the Bulk Water System
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 Page 2 of 80
Table of Contents 1 Information About the Expression of Interest ...................................................................................... 6
1.1 Purpose of Expression of Interest ................................................................................................. 6
1.2 Objectives of the Expression of Interest ....................................................................................... 6
1.3 Closing date ................................................................................................................................... 6
1.4 Requirements to be a Conforming Response ............................................................................... 6
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 37 of 80
8 Conditions of Quotation
1. Definitions – For the purposes of any Request for Quotations (“RFQ”):
1.1 “Council” means Richmond Shire Council and its successors and assigns.
1.2 “Goods/Services/Works” means all such goods, services and/or works (whichever is applicable):
(a) To be provided to Council through the RFQ process; and
(b) As specified or referred to in the RFQ irrespective of whether such goods, services and/or works are described or specified to be goods, services, consultancy services, professional services or works of any kind.
1.3 “You” means the individual or the company who submits the Quote.
2. Lodgement of Quotes – Where the RFQ specifies lodgement, your Quote must be submitted by electronic means (eg Drop Box, email) or by post (eg USB stick) before the nominated Submission Deadline. Where the RFQ specifies a physical or other tender box (whether a physical location or electronic postal address), Your Quote must be submitted at that tender box before the nominated Submission Deadline.
3. Changes to Your Quote – Your Quote is valid for the Validity Period specified in the RFQ. During the Validity Period:
3.1 if You become aware of any error, discrepancy or omission in Your Quote, You cannot submit any correction or additional information without prior written consent of the Council Contact Officer; and
3.2 Your Quote can only be changed as a direct result of agreements reached during negotiations undertaken with Council during the Validity Period.
4. Prices - all prices quoted must be shown as exclusive of GST and the amount of GST must be separately shown.
5. Queries - all contact with Council in relation to this RFQ at any time prior to the end of the Validity Period must only be directed to the Council Contact Officer. If You or any person acting on Your behalf has communications with any other Council Officer in relation to this RFQ, you may be excluded from consideration.
6. Inform Yourself – in submitting a Quote, You are deemed to have done so on the basis that You have:
6.1 At Your own cost and expense, made all reasonable inquires (including inspections if required) to fully inform Yourself of all the risks, contingences and other matters which may impact on Your Quote; and
6.2 Not relied upon any representation made by the Council except where such representation is contained in or expressly made through this RFQ process; and
6.3 Accepted the Conditions of Contract referred to in this RFQ. Council may not consider any Quote which seeks to change these Conditions of Contract. Please note that under the Conditions of Contract, no change may be made to those conditions without the prior written approval of the Council’s Chief Executive Officer; and
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 38 of 80
6.4 In providing your Quote, You have agreed to also provide Council with all information as requested by Council – either as part of the information to be provided with a Quote or by way of any information sought by Council as part of this Request for Quotation process.
7. Council’s Discretion – by issuing this RFQ, Council is under no obligation whatsoever to process to contract for all or part of the Goods/Services/Works in question. Further, the Council may in its absolute discretion:
7.1 vary, amend or cancel this RFQ process at any time;
7.2 apply any criteria it sees fit to the assessment of Quotes and not accept the lowest Quote or any Quote at all and refuse to consider a Quote which does not conform strictly with these Conditions of Quotation or Council RFQ in any respect;
7.3 shortlist, interview, seek clarifications and/or modifications with all, some or none of the Tenderers in relation to either the nature of the Goods/Services/Works sought, the Quote and/or the Contract; or
7.4 decide to contract for all or some of the Goods/Services/Works sought.
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 39 of 80
Mannings 'n' Unitless 0.025 Low grass, even channel
Mannings Flow at depths of (metres) 1.00 ML/day 2,835 2.00 ML/day 9,138 3.00 ML/day 18,259 4.00 ML/day 30,013 Used in modelling although flow depth capacity is 4.5 metres 5.00 ML/day 44,336
2.1.5 Summary data - Diversion Channel
Item Units Diversion
Channel to TP1 Comments Length metres 6,838 Elevation Natural Bed Start metres 152.50 152.5 River bed Elevation matched to the channel bed End metres 158.54 151.20 From DEM Bed width Start metres 66 End metres 66 Embankment crest Width metres 25 Length metres 500 Perpendicular Embankment crest elevation Start metres 6 above natural End metres 6 above natural Indicative Earthworks m3 4,190,000
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 44 of 80
2.2 Control Section at Turning Point 1
2.2.0 Naming Convention Description 1. Control Channel Area from the end of the Diversion Channel to the Transfer Channel 2. Control Channel Embankments Used to manage spoil
3. Control Bank Bank created across the Control Channel under which the Control Pipes and Gates are located
4. Underbank Pipes Pipes located under the Contral Bank 5. Gates Gates at the Upstream end of the Pipes used to control flow into the Pipes
2.2.1 Control Channel Parameters
2.2.1.0 Parameter Units Estimate Comments Batter X:1 3.00 Bed width metres 150 width increased for the Control Structure Length metres 300 Flow depth metres 4.5 Flow limited by Pipe Transfer
Freeboard metres 1.5 In reality, it will be higher than this due to excess spoil placement
Indicative Earthworks m3 503,000 From GM model earthworks estimation
2.2.1.1 Control Channel ℄ Location
Point ID along the Channel Bed ℄ Northing metres
Easting metres
Bed Elev metres
Length metres Comments
1 7715095.254 657636.107 151.2 connects with the Diversion Channel ℄(see above) 2 7715075.179 657538.152 151.2 100.0 Start dropping 3 7715074.577 657535.214 150.2 3.0 Drop 1m at 3:1 batter 4 7715072.569 657525.418 150.2 10.0 10m allowance to the Control Bank upstream toe 5 7715065.814 657492.456 150.2 33.7 Control Bank centreline 6 7715059.059 657459.495 150.2 33.6 Control Bank downstream toe 7 7715057.051 657449.699 150.2 10.0 10m allowance from the Control Bank downstream toe 8 7715056.449 657446.761 151.2 3.0 Rise 1m at 3:1 batter 9 7715035.029 657342.243 151.2 106.7 Distance to Transfer channel to make it 300 metres total length
Channel to TP1 Comments Length metres 300 Elevation Natural Bed Start metres 158.54 151.2 River bed Elevation matched to the channel bed End metres 158.36 151.2 From DEM Bed width Start metres 150 Bed conforms to Diversion Channel exit to the Transfer Channel entry End metres 150 Indicative Earthworks m3 503,000
2.2.2 Control Channel Embankment Parameters
2.2.2.0 Parameter Units Estimate Comments Batter X:1 3
Crest areas, North and South shaped see Model for details Spoil used in the Control Bank and across a shaped embankment
North (west) area m2 62,730 South (east) area m2 121,690
Total m2 184,420 Elevation metres 2.5 metres above natural
2.2.2.1
Control Channel Embankment Crest Areas
Northerrn Embankment Id
Northing metres
Easting metres
Bed Elev Above
Ground Level metres Comments
1 7715478.911 657169.807 0 Elevation set by Diversion Channel embankment 2 7715256.833 657619.961 0 Elevation set by Diversion Channel embankment 3 7715214.882 657605.194 2.5 4 7715198.979 657524.622 2.5 5 7715201.199 657518.183 2.5 6 7715165.895 657344.105 2.5 7 7715162.342 657343.883 2.5 8 7715152.452 657309.063 2.5 9 7715478.911 657169.807 0 Elevation set by Diversion Channel embankment
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 46 of 80
Southern Embankment Id
Northing metres
Easting metres
Bed Elev Above
Ground Level metres
1 7715180.742 657774.197 0 Elevation set by Diversion Channel embankment 2 7714975.472 657687.769 2.5
3 7714946.311 657524.238 0 Elevation set by Control Bank
4 7714784.932 657557.325 0 Elevation set by Control Bank
5 7714958.663 658224.351 0 Elevation set by Diversion Channel embankment 6 7715180.742 657774.197 0 Elevation set by Diversion Channel embankment
2.2.2.2 Indicative Earthworks Embankments Units Estimate Comments North m2 62,730 Batter X:1 10 Height of spoil stockpile m2 2.50
Volume - North m3 160,000 South m2 121,700 Batter X:1 10 Height of spoil stockpile m2 2.50
Volume - South m3 263,000 TOTAL 423,000
2.2.2.3 Cut and Fill Balance - Residual volume from Channel Item Units Estimate Comments Total Excavation from Control Channel m3 503,000 cut
N and S Embankments fill m3 423,000 fill shaped areas
Indicative Earthworks m3 77,750 cut from GM calculation
2.2.3.1 Control Bank ℄ Location
Point ID Northing metres
Easting metres
Natural Elev metres
Crest Elev metres
Length metres Comments
1 - North East 7715244.436 657457.414 160.49 161 2 - South West 7714314.603 657652.120 158.27 161 950
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 47 of 80
2.2.3.2 Control Bank Calculations Parameter Units Estimate Comments Crest elevation metres 161.00 Base elevation metres 150.20 From Control Channel Bed Design
Bank height metres 10.80 Control Bank Width Calculation Batter X:1 3.00 Bank height metres 10.80
Batter width metres 32.40 No of sides 2
Total batter width metres 64.80 Crest width metres 10
Total Base width metres 74.80
2.2.3.3 Control Bank Earthworks Parameter Units Estimate Comments Indicative Earthworks m3 77,750 cut less Underbank pipes 7,050
Total Earthworks 70,700
2.2.4 Underbank Pipes
2.2.4.1 Parameters Units Quantity Comments
No of pipes no of 30 Engineer to review
Materials of construction steel
Diameter millimetres 2000 Review - transport of pipe to site may require 1.8 dia inside 2 m dia
2.2.4.2 Underbank Pipe Lengths Units Quantity Comments
Control Bank width at Toe metres 74.80
add extra length, say metres 1.00 upstream and downstream
Total additional length metres 2.00
Total pipe length metres 76.80
2.2.4.3 Underbank Pipe Volume Units Quantity
No of no of 30
length metres 74.80
Diameter metres 2
Pipe Volume m3 7,050
2.2.5 Control Gates
2.2.5.0 Item Units Quantity Comments
Gate diameter millimetes 2,000 (with welded extension) available as 1,800 mm dia, modified to suit pipe diameter
Head rating metres 6
Lifting mechanism Type Hydraulic
Headwall Type Concrete
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 48 of 80
2.2.5.1 Gantry Lifting system Item Units Quantity Comments No of gates per section no of 5 No of sections no of 6 Distance from crest ℄ to vertical lift Crest ℄ to crest edge metres 5 Crest edge to Gate valve horizontal dist metres 33.40
Total distance metres 38.40
2.3 Transfer Channel
2.3.0 General
2.3.0.1 Naming Convention Description Comments 1. Transfer channel to TP2 Transfer channel from the Control Channel to Turning Point 2 2. Transfer channel to TP2 Embankments 3. Transfer channel TP2 to Cell Transfer channel from Turning Point 2 to Cell Entry
4. Transfer channel TP2 to Cell Embankments
2.3.1 Transfer Channel to TP2
2.3.1.0 Transfer Channel to TP 2 Parameters Units Estimate Comments Batter X:1 3.00 Bed width metres 57.5 Length metres 5,032 Flow depth metres 4.5 Freeboard metres 1.5 Flow ratte ML/day 30,246 From Mannings Calculation at 4 metres flow depth Indicative Earthworks m3 2,284,000 as cut
2.3.1.1
Transfer Channel to TP 2 Bed ℄ location
Northing metres
Easting metres
Bed Elev metres Comments
Start 7715035.149 657342.221 151.2 Connects to the Control Channel ℄ Finish 7714041.328 652410.705 150 Connects to the ℄ of the Transfer Channel to Cell Entry at TP2
2.3.1.2 Transfer Channel to TP 2 Bed location Northing metres
Easting metres
Bed Elev metres Comments
7714068.492 652400.006 150 End of channel at TP2 7714041.328 652410.705 150 End of channel at TP2 7714014.153 652421.472 150 End of channel at TP2 7714993.89 657282.997 151.2 Start of channel at Control Channel connnection 7715022.071 657277.318 151.2 Start of channel at Control Channel connnection 7715050.252 657271.639 151.2 Start of channel at Control Channel connnection
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 49 of 80
2.3.1.3
Manning Flow - Transfer Channel to TP2
Parameter Units Estimate Comments
Mannings 'n' Unitless 0.025 Low grass, even channel Mannings Flow at depths of (metres) 1.00 ML/day 2,833 2.00 ML/day 9,154 3.00 ML/day 18,345
4.00 ML/day 30,246
5.00 ML/day 44,819
2.3.2 Transfer Channel to TP2 Embankments Units Estimate Comments
2.3.2.0 Parameters Embankment batter X:1 5.00 North and South Embankment Embankment crest length metres 5031 Length aligned to the Centreline Start End Embankment crest width metres shaped 12 Crest area is initially shaped Embankment crest elevation metres 162 160.21
2.3.2.1 Transfer Channel to TP 2 - N and S Embankment ℄
Id Northing metres
Easting metres
Crest Elevation
metres Comments 1 - North 7715129.248 657323.258 162 Start of Embankment 2 - North 7714120.723 652394.705 160.21 End of Embankment 1 - South 7714941.05 657361.185 162 Start of Embankment 2 - South 7713961.934 652426.705 160.21 End of Embankment
2.3.2.2 Transfer Channel to TP 2 - N and S Embankment Crest Location
North Embankment Northing metres
Easting metres
Crest Elevation
metres Comments 1 7714126.601 652393.503 160.21 End of Embankment 2 7714120.723 652394.705 160.21 End of Embankment 3 7714114.846 652395.908 160.21 End of Embankment 4 7715097.812 657248.303 162.00 Start of Embankment 5 7715152.452 657309.063 162.00 Start of Embankment 6 7715478.911 657169.807 162.00 Start of Embankment 7 7715118.619 657192.713 162.00 Start of Embankment South Embankment 1 652425.537 7713967.818 160.21 End of Embankment 2 652426.705 7713961.934 160.21 End of Embankment 3 652427.873 7713956.049 160.21 End of Embankment 4 657231.992 7714899.261 162 Start of Embankment 5 657557.325 7714784.932 162 Start of Embankment 6 657524.245 7714946.279 162 Start of Embankment 7 657346.652 7714911.817 162 Start of Embankment 8 657274.849 7714939.769 162 Start of Embankment
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 50 of 80
2.3.2.3 Transfer Channel to TP 2 - N and S Embankment Earthworks
Parameter Units Estimate Comments Transfer Channel to TP2 m3 2,284,000 North Embankment m3 1,079,000 South Embankment m3 1,049,000
Cut and Fill Balance m3 156,000 Excess spoil
2.3.3 Transfer Channel TP2 to Cell
2.3.3.0
Transfer Channel TP2 to Cell Parameters Units Estimate Comments
Batter X:1 3.00 Bed width metres 52.5 Length metres 8,910 Flow depth metres 4.5 Freeboard metres 1.5 Flow rate ML/day 30,195 From Mannings Calculation at 4 metres flow depth Indicative Earthworks m3 2,248,000 as cut
2.3.3.1
Transfer Channel TP2 to Cell ℄ location
Northing metres
Easting metres
Bed Elev metres
Natural Elevation
metres Comments Start 7714041.328 652410.705 150 150.548 Connects to the Control Channel ℄ Finish 7714751.237 643530.043 147.5 149.651 Connects to the ℄ of the Transfer Channel to Cell Entry at TP2
2.3.3.2
Transfer Channel TP2 to Cell Bed location
Northing metres
Easting metres
Bed Elev metres Comments
7714777.401 643532.113 147.5 End of channel at Cell Entry 7714751.237 643530.043 147.5 End of channel at Cell Entry 7714725.072 643527.973 147.5 End of channel at Cell Entry 7714014.153 652421.472 150 Start of channel at TP2 7714068.492 652400.006 150 Start of channel at TP2
2.3.3.3 Manning Flow - Transfer Channel TP2 to Cell
Parameter Units Estimate Comments
Mannings 'n' Unitless 0.025 Low grass, even channel Mannings Flow at depths of (metres) 1.00 ML/day 2,810 2.00 ML/day 9,097 3.00 ML/day 18,272
4.00 ML/day 30,195
5.00 ML/day 44,846
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 51 of 80
2.3.4 Transfer Channel TP2 to Cell Embankments Units Estimate Comments
2.3.4.0 Parameters Embankment batter X:1 3.00 North and South Embankment Embankment crest length metres 8910 Length aligned to the Centreline Start End Embankment crest width metres 12 8 Crest area is initially shaped Embankment crest elevation metres 160.21 156.5
2.3.4.1 Transfer Channel to TP 2 - N and S Embankment ℄
Id Northing metres
Easting metres
Crest Elevation
metres Comments 1 - North 7714120.726 652394.71 160.21 Start of Embankment connecting to the Previous channel section 2 - North 7714738.12 644606.471 156.5 1,070m from End of Embankment
3 - North 7714864.881 643545.264 156.5 slight bend to the north End of Embankment, connecting to the East Wall of Cell 1
1 - South 7713961.934 652426.705 160.21 Start of Embankment connecting to the Previous channel section
2 - South 7714685.294 643524.454 156.5 End of Embankment connecting with the Sth Wall of Cell 1
2.3.4.2 Transfer Channel to TP 2 - N and S Embankment Crest Location
North Embankment Northing metres
Easting metres
Crest Elevation
metres Comments 1 7714860.91 643544.79 156.5 End of Embankment
2 7714733.909 644605.968 156.5 Turning point
3 7714114.746 652394.236 160.21 Start of Embankment 4 7714126.707 652395.184 160.21 Start of Embankment
5 7714742.34 644606.889 156.5 Turning Point
6 7714868.852 643545.739 156.5 End of Embankment South Embankment 1 7714681.308 643524.13 156.5 End of Embankment 2 7713955.954 652426.219 160.21 Start of Embankment 3 7713967.913 652427.191 160.21 Start of Embankment 4 7714689.28 643524.778 156.5 End of Embankment
2.3.4.3 Transfer Channel to TP 2 - N and S Embankment Earthworks
Parameter Units Estimate Comments Transfer Channel to TP2 m3 2,248,000 North Embankment m3 1,279,000 Reduce Crest Elevation earlier South Embankment m3 1,362,000 Reduce Crest Elevation earlier
Cut and Fill Balance m3 - 393,000 insufficient spoil
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 52 of 80
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 70 of 80
6.3.3 Eastern Levee Bridge Elevation Profile
147
149
151
153
155
157
159
0 50 100 150 200
ELEVATIONMETRES
Metres
Cross-section (looking downstream) of the Transfer Channel at the Centreline of the Eastern Levee Bridge
3:1 batter
Crest Width - 10.9 m diagonal length- 9.54 m true width
Crest Elev - 157.952 m South Bank
3:1 batter
Levee Elevationat 155 m
NaturalElevation at 152 m
Bed Width - 60 m diagonal length - 52.5 m true width
Elevation - 148.46 m to 148.455 m
Span = 116 m diagonal length across the channel
3:1 batter
North Bank
Crest Width - 11 m diagonal length- 9.52 m true width
Crest Elev - 157.933 m
The levee is construced at 3 metres above natural elevation
3:1 batter
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 71 of 80
10 Schedule B – Construction Requirements Draft Scope
The Draft Scope is provided as guidance to the construction requirements.
10.1 Excavations
Excavations shall be carried out, as required, as part of the Cell construction to expose or form a
competent surface over which construction activities can be safely or appropriately undertaken to
enable the construction works to meet the engineering specification.
Excavations shall include: • Construction to supply materials to form cell embankments
• Sub-excavation and cut-off key for the cell embankments
The Constructor shall make provision for the safety of all workers within excavations by sloping of
batters to a stable angle, or other means of batter stabilisation as approved by the Engineer. All
open excavations shall comply with all relevant OH&S regulations applying to the works.
Where water intrusion is an impediment to the Works, the Constructor shall remove or exclude
water from excavations by the use of temporary drains, coffer dams, pumps or other means, as
required. Surface water from the surrounding areas shall be prevented from entering the areas of
excavation, and any natural drainage or stream shall be diverted around the works, as appropriate.
Excavations shall, wherever practicable, be graded to facilitate surface drainage by gravitation.
10.1.1 Cell Excavations
Excavation to form the cells shall be completed generally to the lines and levels as shown on the
Drawings, or otherwise to an alternative configuration as defined by the Constructor’s Engineer
provided that an equivalent storage volume is achieved.
Battering of the edges of the excavation, as defined on the Drawings, shall also be undertaken, with
the finish of these batters being such that these batters remain stable.
Material removed in cell excavations shall be hauled away from the site and stockpiled at a location
adjacent to the cells.
All cell excavations shall be completed within in-situ clayey or weathered rock sequences. Following
excavation of the cells, the Designer shall undertake an inspection of the excavated surface to
identify the presence of any sandy or gravelly inclusions, which may provide a pathway for seepage
of water out of the cells. Any such inclusions shall be sub-excavated to the depth and extent as
defined by the Designer, with backfilling of these areas of excavation using Embankment Fill.
10.1.2 Foundation Sub-Excavations
General sub-excavation below cleared and stripped surfaces shall be carried out within the entire
foundation width of the cell embankments to remove weak, compressible or over-saturated soils.
Sub-excavation shall be carried out to a depth of 1 metre. Material so excavated shall be hauled
away from the site and stockpiled within the overburden stockpile at a location adjacent to the
embankment. The Constructor shall avoid over-excavation of the foundation.
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 72 of 80
10.2 Surface Preparations (for Fill Placement)
Prepared surfaces shall be free of local areas of soft or loose materials which cannot be satisfactorily
dealt with in the first layer of fill placed without reducing the quality of compaction standards of fill
below Specification standards.
Trimming and cleaning of the foundation surfaces may therefore be required to enable the Designer
to identify any zones that may need to be locally removed.
10.3 Embankment Construction Works
10.3.1 Earthworks Materials – Definitions And Sources
10.3.1.1 Embankment Fill
Embankment Fill shall be used to construct the cell embankments. Embankment Fill shall comprise
fine grained, cohesive materials, which produce a competent fill with minimal air voids and of low
permeability when compacted to Specification requirements. Embankment Fill shall be free of
significant organic material and shall contain less than 25% by volume of particles greater than
25mm average dimension which do not break down under the specified compaction effort.
Embankment Fill shall be sourced from the cell or bulk sample test pit excavations, as defined by the
Designer.
10.3.1.2 Select Fill
Select Fill shall be used to form internal batter fill, excavation surfaces of the cells and the surface of
the cell overflow channels, as deemed necessary by the Designer, as an erosion protection measure.
The extent of Select Fill placement, as shown on the Drawings or as otherwise deemed necessary
depending on exposure, shall be defined by the Designer’s Representative, across sections of
embankment batter and overflow channel surface that are identified as being “erodible”.
Select Fill shall generally comprise fill material of such quality that produces a competent engineered
fill when compacted to Specification requirements. This material shall be free of significant organic
material and shall contain less than 10% of rock or cemented fragments greater than 200mm
average dimension, which do not break down under the specified compaction. Above all, Select Fill
shall comprise materials that are deemed by the Designer’s Representative to be non-erodable.
Based on direction from the Designer’s Representative, the Designer shall identify materials from
the cells or bulk sample test pit excavations that are suitable for use as Select Fill.
10.3.2 Rock Fill Armouring
Rock Fill shall be used to armour discharge channels and across emergency spillways.
Rock Fill Armouring shall be characterised by the following: •Maximum particle size of 250mm •D50 between 19mm and 100mm (where D50 = diameter for which 50% of particles are smaller) •Fines fraction (i.e. less than 0.075mm) of less than 5% by weight. Rock Fill shall comprise strong and fresh material not subject to weathering, and durable to the
extent that minimal breakdown or degradation of the material occurs during placement and
compaction, or under service conditions. The material shall also be non-acid producing.
Rock Fill may need to be imported from an off-site source (eg Surbiton).
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 73 of 80
10.4 Embankment Fill Placement, Conditioning and Compaction
10.4.1 General Requirements
All filling shall be done to the lines and levels indicated on the Drawings, or as otherwise directed by
the Designer.
Embankment Fill and Select Fill shall be placed subject to moisture conditioning and compaction, as
necessary, to produce a fill material possessing the fill quality and performance, as implied. Fill
compaction shall be carried out using protruding foot type compaction plant, with smooth drum
compaction permitted for surface finishing.
Fill surfaces which have dried, have been rolled smooth or are in any other condition which may
preclude obtaining a good bond between successive fill layers or zones, shall be scarified and
conditioned, as necessary, prior to placement of the succeeding fill layers.
The rate of placement of Embankment Fill and Select Fill shall not exceed at any time the
productivity of available spreading and compaction plant. Fill slopes shall be neatly trimmed and left
without excessive loose surface materials. Fill slopes steeper than 20% gradient shall be overfilled, as
necessary, and trimmed back with an item of plant equipped with a smooth blade to ensure that all
fill in the slope is adequately compacted.
10.4.2 Placement
Prior to compaction, Embankment Fill and Select Fill shall be broken up and/or rock raked as
required, to meet the size requirements of the Specification, be laid out in a layer of approximately
uniform loose thickness and be brought to an appropriate water content by wetting, or aeration and
drying (as the case may be), and/or blending and mixing wet and dry materials. The fill material shall
be spread and compacted in layers, which do not exceed 200mm loose thickness prior to
compaction, to ensure that fill of adequate quality, and bonding between layers can be obtained.
Prior to the placement of the first fill layer over any prepared surface, the surface shall be wetted
and conditioned as necessary to ensure that the first fill layer will blend with the foundation
materials to achieve a tight bond and the specified compacted density and moisture.
10.4.3 Fill Compaction Standards
Embankment Fill and Select Fill shall be compacted to the following compaction standard:
Dry density of not less than 98% of standard maximum dry density (AS 1289.5.1.1) with measured
moisture contents of samples taken from compacted fill falling within the range of –2% to +3% of
optimum moisture content (AS 1289.5.1.1).
10.4.3.1 Control Testing
The Designer will arrange for control tests to be carried out on Embankment Fill and Select Fill to
confirm that appropriate compaction methods are being used to achieve Specification requirements.
All works shall be ceased, as necessary, to permit control testing to be carried out.
Tests shall be conducted generally in accordance with the frequencies and standards as outlined
below, or otherwise as determined by the Designer to be appropriate. The above notwithstanding,
the results of the tests shall be the sole means of confirming the suitability of the placed fill.
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 74 of 80
Test Frequency* Standard
In-situ Density 1 per
1,000m3
AS 1289:5.8.1 (Nuclear Surface Moisture – Density
Gauge) or AS 1289:5.3.1 (Sand Replacement
Method)
Moisture Content 1 per
1,000m3
AS1289:2.1.1
Laboratory Dry Density –
Moisture Content
Relationship
1 per
1,000m3
AS1289:5.1.1 (Standard Compaction Method)
* Compacted in place
In the event that evidence is available indicating that materials are consistent and work is being
carried out in a systematic and consistent manner, the frequency of compaction testing as defined
above may be reduced.
10.5 Placement, Conditioning and Compaction Of Other Materials
10.5.1 ROCK FILL ARMOURING Rock Fill Armouring shall be selectively placed, levelled and compacted by suitable plant such that
displacement/movement of the material does not occur under service conditions. The material may
be placed without moisture content adjustment.
Where deemed necessary by the Designer to prevent erosion of subgrade materials existing beneath
the Rock Fill, a layer of Grade 2 Geotextile shall be provided to separate the subgrade from the Rock
Fill Armouring material. The Grade 2 Geotextile shall comprise a proprietary product manufactured
from polyamide, polyolefines, polyester or polyvinyl material, either singularly or in combination.
The geotextile filaments shall be rot-proof, chemically stable, with no water absorbency. The
filaments shall also resist delamination and maintain relative position in the geotextile mesh. The
minimum properties of the fabric shall be as follows:
• Trapezoidal Tear Strength - 436 N
• CBR Bust Strength - 3,147 N
• G Rating - 2,390 G
• Grab Tensile Strength - 997 N
10.5.2 Wearing course
Wearing Course material shall be used on the crest of the cell embankments. Wearing Course shall
generally comprise a well graded, fine to medium grained gravel material, containing between 5 and
15% (by weight) of plastic fines. The material shall also be competent and stable to such an extent
that the trafficable surfaces as formed do not deteriorate to below the defined level of serviceability
subject to exposure or trafficking.
Wearing Course may comprise selected waste material sourced from the Select Fill pits as identified
by the Designer. An imported material may be used as an alternative.
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 75 of 80
10.6 Earthworks Tolerances
Earthworks construction shall be completed generally to the levels and dimensions as shown on the
workings drawings.
The following tolerances in finished dimensions shall not be exceeded:
Level of embankment surface -0 to +100mm
Level of emergency spillway crest -0 to +50mm
For all surface finishes, maximum
variation
±50mm from a 4m long straight edge placed in any direction
on any formed surface
10.7 Concrete Works
10.7.1 Concrete Materials
10.7.1.1 Cement – Portland Type A
Cement shall be normal Portland cement of approved manufacture, complying in quality with
AS1315. Cement content shall be measured by weight.
10.7.1.2 Fine Aggregate
Fine Aggregate shall comprise clean, hard natural sand or screened gravel, possessing the following
grading:
Sieve Size (mm) Percentage Passing (by weight)
4.75 85 to 100
0.075 0 to 5
10.7.1.3 Coarse Aggregate
Coarse aggregate shall comprise clean, hard, crushed stones or natural river gravel, possessing the
following grading:
Sieve Size (mm) Percentage Passing (by weight)
19.0 90 to 100
4.75 0 to 10
2.36 0 to 5
10.7.1.4 Water
Water used in concrete mixes shall be clean and potable.
10.7.2 Ready Mixed Concrete
The production and delivery of ready-mixed concrete shall be in accordance with the requirements
of AS1379. The quantity of concrete delivered in any truck shall not exceed the rated capacity of the
truck’s agitator drum. The timing of deliveries shall be such as to ensure an essentially continuous
placing operation. Ready-mixed concrete shall be placed and compacted within 1 hour of charging
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 76 of 80
the mixer (for concrete temperatures up to 32ºC) or within 45 minutes of charging the mixer (for
concrete temperatures exceeding 32ºC but less than 35ºC). A manufacturer’s certificate in the form
of a delivery docket, in accordance with AS1379, shall be supplied for each and every batch of ready-
mixed concreted delivered to site, showing the following:
(i) Name and location of project
(ii) Grade of concrete supplied
(iii) Cement content (kg per cubic metre)
(iv) Slump
(v Admixture (if any)
(vi) Brand of cement
(vii) Volume of concrete delivery (cubic metres)
(viii) Time when concrete was batched
(ix) Date and truck registration number
(x) Nominal maximum aggregate size
10.7.3 Concrete Strength
All concrete works shall possess minimum characteristic strengths (grade) at 28 days as follows:
• Headwall and spillway channel 32Mpa
• Other general works As nominated on the Drawings.
10.7.4 Concrete Slump
Nominated slump for cast insitu concrete shall be 80mm ±15mm.
10.7.5 Concrete Sampling And Testing
Concrete sampling and testing shall be undertaken in accordance with AS3600 and AS1379.
10.7.6 Concrete Handling, Placement and Carrying
For preparation, handling, placement and compaction of concrete, the relevant clauses of AS3600
shall apply. All concrete placed shall be mechanically vibrated.
Concrete shall be placed in such a manner to avoid segregation or loss of materials and carried out
continuously between construction joints to maintain a plastic edge.
At construction joints, the edge of hardened concrete shall be roughened and cleaned, and
immediately prior to placement of concrete, shall be dampened and coated with a bituminous
expansive filler product, unless otherwise indicated on the Drawings or directed by the Designer.
10.7.7 Protection and Curing
New concrete shall be protected from premature drying, from excessively hot and cold
temperatures, and from mechanical damage by equipment, materials or other means.
Horizontal surfaces shall be kept continuously damp for at least seven (7) days following casting.
All concrete surfaces exposed within 7 days of initial set shall be cured based on AS3799. Curing shall
be commenced within 1 hour of initial set or first exposure and continue for at least 7 days after
pouring concrete.
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 77 of 80
For particular weather conditions (namely periods of prevailing dry winds, low humidity, hot days, or
cold nights), random shrinkage cracking can occur. Every effort shall be made to maintain a
construction regime to reduce the effect of these conditions, with provisions as outlined in the
Cement and Concrete Association’s (C&CA’s) handout, Difficult Weather Concreting to be considered
and adopted where relevant.
10.7.8 Tolerances
Minimum dimensions for concrete works shall be as required for first class work.
10.8 Concrete Finish
For general concrete works, a “steel trowelled” finish shall be produced, with this finish formed by
steel trowelling the surface under firm pressure or by power floating. The characteristics of this
finish shall be as follows:
• Abrupt Irregularities Nil
• Gradual Irregularities <5mm in 2m
The concrete finish to be achieved for formed concrete works shall be characterised by the
following:
• Type of formwork (min. standard) Plywood • Abrupt Irregularities <3mm • Gradual Irregularities <5mm in 2m • General requirement Even surface with no grout runs
10.9 Formwork
10.9.1 General
Formwork shall comply in all respects with AS3600 and AS3610.
10.9.2 Tolerances
Formwork shall be securely placed to achieve final concrete tolerances.
10.9.3 Support of Formwork
Supports shall be designed and constructed to provide the necessary rigidity and strength to support
the loads to be carried. Bracing shall be provided both transversely and longitudinally, and provision
shall be made by means of wedges for adjusting the height of the formwork.
10.9.4 Finish
Exposed formed surfaces shall achieve the finish as defined in the relevant clauses of this Specification, with a 20mm chamfer to be provided in all cases, unless otherwise specified by the Designer.
10.10 Reinforcement
10.10.1 Lapping of Fabric
All fabric reinforcement is to be lapped by 2 main transverse wires plus 50mm.
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 78 of 80
10.10.2 Cover
Clear cover to reinforcement shall be 70mm unless otherwise indicated on the Drawings.
10.10.3 General Requirements
All reinforcement shall be inspected and approved by the Designer prior to placement of concrete.
During placement of concrete, the Concrete Contractor shall ensure that the reinforcement remains
undisturbed and is not bent or displaced in any way.
Reinforcement shall be supplied and bent in accordance with AS3600. Bending of reinforcement
with or without heating is not permitted.
Reinforcement splices shall be full tension splices to AS3600, with no mechanical splicing or welding
of reinforcement to be undertaken unless otherwise approved by the Designer. Reinforcing bars
shall not be cut to clear penetrations, but shall be displaced to clear such penetrations.
All reinforcement shall be supported in its correct position during concreting by securely tying with
1.25mm wire to approved plastic tipped bar chairs, spacers or support bars. Support spacings shall
be such as to position and maintain the reinforcement to the tolerances of AS3600 and shall be at
800mm maximum centres in slabs. Plastic tipped steel bar chairs shall not be used.
10.11 Ancillary Project Element and Facilities
10.11.1 Access roads
Access roads will need to be formed by the Constructor, with road construction to be of a standard
to maintain all-weather access, which is comfortable and safe for all users and is controlled for off-
site sediment migration. The access road and other haul or temporary roads to satisfy construction
requirements may be formed subject to prior approval being obtained from the Designer.
All access roads, existing or temporary, located within the defined working area or used for access to
the site shall be maintained in conjunction with the construction works.
The standard of access road maintenance shall be such that the roads are kept structurally sound,
safe and comfortable to use and will include regular watering for dust suppression, grading, the
filling of holes and the repair of washouts.
These maintenance obligations apply for the duration of the construction works regardless of other
operational/routine traffic that uses the access roads.
10.11.2 Construction Management and Progress The Contractor will be the Responsible Contractor for the site.
An experienced management, supervisory and quality control team shall be maintained under a
nominated site based project manager, with this team being committed to achieving and
maintaining the standards specified for the works.
Project meetings shall be held routinely, during which construction and/or operational progress will
be discussed, with respect to the program or productivity requirements.
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 79 of 80
At these meetings, revised/updated versions of the program to reflect works completed to date shall
be submitted which highlight adjusted milestones and variations in construction sequencing. Also to
be submitted during these meetings will be completed Inspection and Test Plans (ITP’s) for works
completed to date, and other documentation relevant to review of project status.
10.11.3 Authorities All construction and ancillary work shall be carried out in accordance with the requirements of all
authorities having jurisdiction over the site. In particular, construction works shall comply with
relevant statutory regulations and policies, in respect to the discharge into the atmosphere of
smoke, dust or other air-borne contaminants, or to receiving waters (surface and groundwater) of
sediment or other water-borne contaminants.
These regulations will be developed in conjunction with environmental approvals.
10.11.4 Standards Specification Plant, materials and workmanship shall comply with the requirements of current standards and
Codes of Practice of the Standards Association of Australia (Standards Australia), as appropriate. All
materials and workmanship not covered by a Standards Australia standard shall be of such kind as is
used in first class work, suitable for the environment and conditions in which the works are to be
constructed.
10.11.5 Amenities Administrative facilities, workshop/plant yard and any other amenities required for the execution of
the construction works shall be located within an area as nominated by the Constructor.
Suitable toilet and wash-up facilities for all persons employed on the work shall be provided.
Generated power and telecommunications shall also be provided as part of the construction project,
as well as all services including potable water to a suitable standard, capacity and quantity to meet
the needs of the project.
Provision for appropriate spill containment measures (e.g. bunding) within the site where fuels and
oils are to be stored shall also be made. These measures shall comply with relevant legislation and
regulations, as well as specific requirements of the Principal. Furthermore, appropriate control
measures must be implemented for plant maintenance areas, to minimise the risk of fuel/oil spillage
or other forms of land contamination. Subject to environmental approval and relevant conditions,
appropriate on-site disposal of associated wastes (e.g. oil, tyres, etc) shall be provided.
10.11.6 Setting Out and Survey The extent of survey currently available within the construction area is shown on the Drawings. Base
line and reference benchmarks on which this survey has been derived shall be nominated by the
Designer. On commencement of construction, the accuracy of these survey points shall be verified
by the Constructor, with the survey extended as required to confirm the set out and design layout of
the works.
10.11.7 Existing Services The locations of all existing services within the area of the works will be identified by the Contractor
prior to commencement of works. Such services include telecommunications and overhead
electricity cables. There may be a need to either relocate or redirect a number of existing services to
complete the works as specified.
Flinders River Agricultural Project Richmond Shire Council
Request for Tender 22 August 2019 – Rev 1 80 of 80
10.11.8 Protection Precautions, as necessary, shall be taken by the Constructor to avoid damage to any
structures/services existing within the site. Where appropriate erection and maintenance of
temporary barriers, boardings or other arrangement or alteration of work practices, as required, will
be used to protect these items.
10.11.9 Construction Water Construction water to be used in construction works shall be supplied by the Contractor using
temporary overland water capture cells, to be made available at an agreed location. The transport
and application of water for use in construction shall be undertaken by the Constructor.
10.11.10 Management of Site Waters Particular attention shall be paid to the control of runoff around working/excavation areas to
minimise any delay to the works. All works shall be directed to avoid wastage of materials that
would be suitable for use as fill or rip-rap. To assist in achieving this, stockpile areas shall be drained
effectively and materials shall be selected and/or mixed and conditioned making all use of
favourable weather.
Appropriate works or measures, as required, shall be implemented to minimise the off-site release
of sediment within stormwater run-off. Particular attention shall be paid to borrow areas and any
bare earth surfaces formed in conjunction with the construction works. Sediment control provision
shall comply with a Sediment and Erosion Control Plan to be prepared by the Constructor prior to
commencement of construction works
10.11.11 Site Security During the period of the works, any actions, as required, to maintain site security shall be arranged
by the Contractor. In particular, prior to ceasing works on each day, any fencing or gates removed
for the purpose of the Works, shall be reinstated. In addition, any open excavation(s) shall be made
safe by bunding/barricading/fencing, as a minimum.
10.11.12 Clean-Up On completion of the works, the site shall be generally cleared by the Constructor, with any damage
made good, and the site restored to a neat and tidy condition. All work areas having achieved the
final surface profiles as defined shall be smoothed and graded in a manner to conform to the natural
appearance of the landscape. Where unnecessary destruction, scarring, damage or defacing has
occurred as a result of the operations, these areas shall be repaired, replanted, reseeded, or
otherwise corrected.
10.11.13 As-Constructed Drawings and Certificates During progress of the works, a licensed surveyor shall survey and plot accurately all work carried
out. This survey shall be presented in the form of “As-Constructed” drawings that shall be presented
in a properly drafted form detailing all elements of the works including final levels and extent of all
civil construction works.
A spatial database of a LIDAR (min 4 ground strikes/m2) survey of the completed works shall be
provided with all elements of the Project detailed.