Download - BORED PILING - 20678695.s21i.faiusr.com
PROPOSED BRIDGE CROSSING SUNGAI PULAI AND LINK ROAD FROM PELABUHAN
TANJUNG PELEPAS TO TANJUNG BIN,
MUKIM AIR MASIN AND SUNGAI KARANG DAERAH PONTIAN AND MUKIM PULAI,
DAERAH JOHOR BAHRU, JOHOR DARUL TAKZIM.
METHOD STATEMENT
BORED PILING
MARCH 2018
Qiwei Wu
SINOHYDRO FOUNDATION ENGINEERING COMPANY LINITED
TIAN JIN 301700
Page 2 of 28
Table of Contents
1.0 SCOPE OF WORK..................................................................................................... 3
1.1 General Description .............................................................................................. 3
1.2 Reference .............................................................................................................. 3
1.3 Materials ................................................................................................................ 3
1.4 Plant and Equipment ............................................................................................ 3
1.5 Manpower .............................................................................................................. 4
1.6 Construction Procedures ..................................................................................... 5
2.0 SAFETY AND HEALTH ........................................................................................... 18
2.1 Job Safety & Health Analysis ............................................................................. 18
2.2 Information to Personnel .................................................................................... 18
2.3 Emergency Arrangements ................................................................................. 18
2.4 Permit Requirements .......................................................................................... 19
3.0 ENVIRONMENTAL ISSUES .................................................................................... 19
3.1 Environmental Aspects, Impacts & Control Measures ..................................... 19
4.0 QUALITY ASSURANCE & QUALITY CONTROL .................................................... 19
4.1 Contractual Requirements ................................................................................. 19
4.2 Inspection & Testing ........................................................................................... 20
4.3 Follow up & Evaluation ....................................................................................... 20
5.0 APPENDICES .......................................................................................................... 20
5.1 Construction Sequence Flow ............................................................................. 20
5.2 Job Safety & Health Analysis (JSA)................................................................... 21
5.3 Environmental Aspect Impact Register (EAIR) ................................................. 21
5.4 Inspection Test Plan (ITP) .................................................................................. 21
5.5 Quality Control Site Inspection Checklist ......................................................... 29
5.6 Recycle System for Drilling Fluid ...................................................................... 30
5.7 Proposed Location of Bore Pile ......................................................................... 31
Page 3 of 28
1.0 SCOPE OF WORK
1.1 General Description
This method statement is to describe the methodology of bored piling construction
serves as the foundation of the project.
No bored pile excavation shall be carried out within a distance of 5 pile diameter
center to center from an open pile under excavation or a pile which has been
concreted less than 24 hours.
1.2 Reference
No Description Document or Ref. No.
1 Technical Specification
Section – Piling Works JKR STANDARD SPECS
2 Drawings – Piling Works Tender Drawings
1.3 Materials
No Description Purpose
1 Concrete For concreting works
2 High Tensile Steel
Reinforcement Bars
For fabricating rebar cage
3 Drilling Fluid (Bentonite) To support bore hole from collapse
4 Sonic Logging Tube To install/ fix to rebar cage for sonic logging
test
5 Concrete Spacer Block For concrete cover
6 Tie Wire For tying rebar and spacer block
7 Joint Coupler For jointing main reinforcement of rebar cage
1.4 Plant and Equipment
No Plant and
Machinery Purpose
1
Hydraulic Drilling Rig
Attached with
Telescopic Kelly Bar
For bored pile drilling works
2 Mobile Crane For hoisting of equipment / materials
(reinforcement cage, boring tools, vibro
Page 4 of 28
No Plant and
Machinery Purpose
hammer etc.
3
Drilling Tools (Auger,
boring bucket, core
barrel, cleaning
bucket)
To be attached to drilling rig for boring of
soil/rock
4 Excavator To prepare site platform for drilling rig/removal
of excavated material
5 Fluid Plant (when
required)
For bentonite suspension to be used to
stabilize bored hole
6 Tremie set For concreting bored pile in wet condition
7 Water Pump For pumping water
8 U-bolt and Welding
Set and Coupler
To carry out works for reinforcement cage,
testing instrument, etc.
9 Generator Set To supply electricity for equipment
10 Vibrating Hammer To install / removal of temporary casing
11 Steel Plate Machine platform on soft ground
12 Tower Light / Lighting To illuminate work area when dark
1.5 Manpower
No. Description No. of
person Brief Roles and Responsibilities
1 Project Manager 1
Overall authority and responsible for the
execution of the work including anticipated job
quality, effective cost control and schedule
control
2 QAQC Manager 1 To ensure works on site comply to QAQC
standard and control
3 Site Engineer 1 Planning & monitoring site construction
activities
4 Site Supervisor 3 Supervising site construction activities
6 Rigger 3 To ensure all rigging and slinging activity follow
the safe technique and follow SOP
7 Rebar Worker 6
Cut and fit wire mesh or fabric, using hooked
rods, and position fabric or mesh in concrete to
reinforce concrete.
8 SHE Supervisor 1 Conduct site toolbox meeting and make sure
all site activities follow safety and health
Page 5 of 28
*
T
h
e
a
m
o
unt of manpower to be deployed is tentative, the actual manpower will be
changed whenever necessary according to actual site condition.
1.6 Construction Procedures
1.6.1 Preparation of platform work area
Storage of Reinforcement at Site: Reinforcement shall be stored on
timber sleeper on firm ground and under shade to avoid bending due
to unequal settlement under self-weight of itself. They shall be stacked
in manner as to allow easy identification and lifting. Reinforcement
shall be protected from rain by plastic sheet covering to avoid
excessive corrosion or rusting.
Platform Preparation and Setting Out: The bored pile position must be
free from underground services and utilities. The firm, solid platform is
mandatory and equipment must be seated on firm platform which shall
be flat and compacted to receive the boring rig and crawler crane.
Steel plate may be needed on top of prepared platform for boring rig to
be seated so as to evenly distributed load over ground.
1.6.2 Setting Out and Positioning
Surveyor will first set out the position of bored pile as per the approved
construction drawing. The pile position will be marked with peg
indicating of bored pile identification, its depth and size. Existing
ground level at the pile position will also be recorded prior to drilling.
Figure 1: Setting Out Bored Pile Location
regulation
9 General Worker 8 Conduct general works at site
10 Machine Operator 3 Operating the plant and machinery during the
works
11 QC Engineer 2 Quality inspection / checking for the piling work
Page 6 of 28
Boring plant will then mobilize to the intended bored pile position and
position the centre of auger exactly above the pile point.
Figure 2: Positioning of boring plant over bored pile position
Verticality of the Kelly bar shall be checked before boring commences.
The verticality of the Kelly bar will be controlled by means of a plumb
line. Adjustment should be made so as to enable the Kelly bar to be as
vertical as possible and subsequently the position of the auger is
checked against the pile point. Adjustments should be made so that
the centre of the auger is nearest to the pile point to ensure that the
tolerances of 75mm deviation can be maintained. The auger is then
lowered and boring operation commenced. Surveyor will also cross
check the final coordinate position prior to the casing installation during
pre-bore to give approval of the deviation.
Reasonable care should be taken so that the pile position and
verticality are constructed within the specified tolerance i.e. 75mm and
1 in 75 respectively.
Two reference points with distance of 1.5m from pile centre
perpendicular to each other from the pile position will be offset and set
on site.
Working platform for the bored piling area shall be ensured firm and
stable prior to the boring operation. Steel plate shall be used for the
boring plant to sit on to strengthen the platform whenever necessary.
1.6.3 Boring Operation
When all the associated technical information is confirmed and
clarified (i.e. presence of services, pile coordinate, platform, cut off
level, pile length, validity of drawing, etc.), boring shall commenced to
the required size and depth. The boring work permit to be obtained
before boring work starts.
Page 7 of 28
Figure 3: Commencement of boring operation
Stability of the borehole will be observed during boring works. If the
borehole is unstable and collapsible, temporary casing will be inserted
into the borehole. Verticality of the temporary casing will be checked
during installation using the plumbs positioned in perpendicular
direction to each other and spirit level. The casing shall be positioned
within the tolerance and permitted deviation of 1H:75V after driving.
Usually temporary casing shall be advanced until hard strata to cover
all the loose, unstable granular material or water bearing strata at all
times.
The length of the casing will be determined from actual conditions
encountered on site. Single walled temporary casing will be installed
using double jaws vibro hammer attached to the crawler crane.
All temporary casings shall be free from significant distortion. They
shall be of uniform cross section throughout each continuous length.
Temporary casing shall be exposed 1m above existing ground level. If
the casing unable to be protrude less than 1m, a rigid barrier will be
provided around the casing and tout wire mesh stretch over at the top
of casing.
Page 8 of 28
Figure 4: Insertion of temporary casing
To have better control on the deviation of pile position, prior to the
commencement of boring, the casing will be again checked for
positional tolerance according to Figure 5. The verticality of casing
shall be checked by using spirit level and plumb and recorded on As-
Built field sheet. Casing shall be re-driven if casing deviates more than
75mm.
Figure 5 : Cross section of top of casing
Excavation of bored pile shall be using rotary kelly and auger/ bucket
method, depending on the soil condition and strata. In soil condition,
boring is using auger or boring bucket (Figure 6a & 6b) while for hard
material or rock encountered during boring is using core barrel (round
shank, stolen, roller bit), boring operation shall be carried out until the
bored pile designed depth is achieved.
Survey point
Page 9 of 28
When encounter rock head layer, SC representatives will be informed
and witness to verify the depth of rock head. Exact time of changing of
boring bucket to rock coring tool shall be recorded.
Figure 6: Method of boring
A detailed record of all encountered ground conditions together with
associated times, types of equipment and materials used and any
occurrences on site will be recorded on the Pile Bore Log and Field
Sheet.
SC will be informed immediately if the rock level encountered during
construction varies more than 1m from that shown in the approved
construction drawings. Same notification will be given when cavity is
encountered. The actual rock coring duration to reach the design toe
level must be accurately recorded.
Rock excavation length shall be measured from the lowest level of the
flattened horizontal bedrock surface. Collected rock samples to be
inspected at site. The result of sample shall be sent to SC as soon as
possible to confirm the final toe level.
Whenever required, drilling fluid bentonite or approved drilling fluid
(water) shall be filled before advancing the drilling process below the
bottom of the casing. The testing of bentonite i.e. viscosity, density and
sand content shall be conducted on site as necessary. Drilling fluid will
always be directed to the nearest tank/container/pond with earth bank
to prevent spill over of slurry and messed up the working area. The
Page 10 of 28
dimension for the recycling tanks are 6100(Length) X 2400(Width) X
2500(Height)
Illustration of bored piling work area set up is further illustrate in Figure
A, B, C below.
Figure A: Bore Piling Set Up Illustration within Green Area (For 2 piers)
Figure B: Bore Piling Set Up Illustration within Green Area
(For 1 Pier/ Test Pile)
Approx. 100m (max) – 2 pier location
Page 11 of 28
Figure C: Bore Piling Set Up Illustration within Traffic Island Area
The head of the drilling fluid will be kept at a level high enough to
ensure sufficient stabilizing capacity in the uncased shaft area. The
fluid used for drilling purposes will be supplied to the pile from the fluid
plant storage area via a supply line.
The level of the drilling fluid will be kept constant above ground water
level and will be monitored during the whole drilling process. If
extensive fluid loss occurs during drilling, the drilling will be stopped
immediately. The borehole will be backfilled with lean concrete or
mortar in order to create a plug surrounding the pile shaft. Re-drilling
will then take place within 2 hours. If further fluid loss or shaft collapse
occurs, the bore will be immediately backfilled with low strength, lean
mix concrete prior to any further excavation taking place. There will
have a sedimentation plant that will be maintain everyday by excavator
and will sent out from site.
Reasonable steps will be taken to prevent the spillage of drilling fluid
suspension on the site (i.e. circulation pumping system set up on site
for green area, direct pumping system/earth bank/ sump pit for
near/adjacent road/public access), depending on the working area.
Upon completion of a bored pile hole, the contractor shall immediately
submit a log of the bore to the SC. A joint inspection with SC will be
conducted to verify the depth and checking the cleanliness. After
assessing the results, the SC may instruct the contractor to proceed
with the installation of the bored pile or may instruct the contractor to
further advance the depth of the boring until further drilling confirms
that a sound founding level has been reached.
1.6.4 Cleaning of Pile Base and Verification of Pile Length
Note: Actual set up shall be modified for any unforeseen obstruction
found on site from time to time
Page 12 of 28
The boring process will be continued to the final depth length for each
designated bored pile length specified in the approved construction
drawing.
After reaching the depth of bored pile, the base of the borehole will be
cleaned until the final required depth. Loose and reshaped material
shall be removed.
Figure 7: Cleaning of Pile Base
After complete pile base cleaning, Supervision Consultant (SC) will be
invited to verify and confirm the final toe level of the pile and
termination of soil/rock prior to placement of reinforcement cage by
using measuring tape. The bored pile length confirmed and agreed by
Consultant shall be recorded in the inspection request and pile bore
log. Pile length, rock head level, type of drilling tool and penetration
rate will all be recorded.
1.6.5 Spoil Removal
Spoil earth for the borehole will be cleared from the boring locations by
using excavator. The spoil earth will first be placed near to the
borehole location until dry enough for transportation out under sunlight
and wind factor.
1.6.6 Installation of Reinforcement Cage
Page 13 of 28
The reinforcement cage will be installed in prefabricated sections near
to the bore pile location. Reinforcement and dimension of the cage will
be erected according to the approved construction drawings and
specifications. A joint inspection with SC will be conducted for all rebar
cage to verify the size, type, length and related. Verification of the
correctness and cleanliness of the cages will be recorded in the Pile
Bore Log Sheet.
Steel cage will be fabricated at yard and will be transferred to site by
cargo trailer. Cage Fabrication Platform will be erected for fabrication
of more than 600mm diameter. Timber wedges will be provided to
prevent rolling of steel cages when fabricating horizontally.
The maximum length of rebar cage sent out to yard is 12m. The cages
will be provided with stiffening rings (for pile diameter 1200mm and
above) at every 3m interval and other accessories to enable handling,
lifting and installation without permanent deformations. The cages will
be securely fixed using manually tied galvanized wire to link and
subsequently tap weld at lapping.
Sonic logging tubes, telltale extensometer and strain gauge wire tube
(using A9 retrievable extensometer method – only for preliminary test
pile which is instrumented) shall be installed inside the bored pile
reinforcement cage to the required protrusion level, only on selected
working pile and all preliminary test pile indicated and agreed by
PDP/SC. The instrumentation and monitoring access tubes need to
get consent from tester if they are to be welded to the cage.
If the structural reinforcement cage extends to the base of the pile
bore, these instrumentation and monitoring access tubes will be fixed
to the main reinforcement by mean of clamping or welding. However, if
the base of the pile bore exceeds the structural cage requirement by
more than 2 meters, the subsequent section will be joined by means of
threaded couplers and installed through the suspended reinforcement
cage to the case of the pile bore.
Sonic logging tubes shall be 4 nos. for pile diameter less than 1350mm,
and 6 nos. for pile diameter greater than 1350mm whereas for telltale
tubes and strain gauges, it shall be installed parallel to the axis of the
pile and terminating at each level as indicated in the approved
construction drawing.
Telltale extensometer and strain gauge wire tubes (for A9 retrievable
extensometer) are installed next to main bars will provided added
protection for the strain gauges during concreting.
The rebar cage will be fabricated to designed length before installing
to the complete bored hole. The rebar cage, which are required to be
pre-fabricated in length exceeding 12 meters. Similarly, these cages
Page 14 of 28
may be placed onto a supporting timber plank, which will be used to
carry the cage during lifting to the vertical.
Concrete cover wired to the cage will provide lateral support and
ensure adequate concrete cover.
Cages will be hoisted into the borehole using a crawler crane with
safety ledges of the required capacity. In cases where the structural
requirement of the reinforcing cage is less than the depth of the pile
bore, cages will be suspended in the bore hole using the “double hook”
system. “Double hook” system is by using two chain slings (same
length) to lift the steel cage (Figure 9). Cage shall be ensured to
maintain at the intended cut off level. Lapping of steel reinforcement
cage shall be weld using spot weld method or thread coupler (refer
Material Submission Approval for Jointec Coupler from Halfen Moment;
KVLRT3-WCTB-GS03-MAT-MSA-000011).
Figure 8: Installation of reinforcement cage
Figure 9: Double hook System
Page 15 of 28
Figure 10: Rebar cage with sonic logging tube
1.6.7 Concreting of Bored Pile
Slump test and temperature checking shall be monitored and
conducted as per specification. Slump test to be conducted on site at
the initial first hour whenever the idling period of concrete truck
exceeding one hour. Subsequent slump test shall be taken at half an
hour interval.
Concreting shall commence when reinforcement cage is secured
properly inside the bore hole. Concrete shall be carried out
continuously using tremie method. After installing the rebar cage,
another net sounding is required.
Tremie pipe shall be lowered to the toe of borehole not higher than
1.0m from the base. Polystyrene shall be inserted to prevent direct
contact between concrete with drilling fluid. As concrete rises 9m
upwards, 1-2nos of tremie pipe (3m/nos.) will be withdraw upwards as
well and ensure the end of tremie pipe is embedded into the concrete
at all times during concreting works. The end of tremie pipe shall be
kept immersed in the concrete to a depth of 3m at all times. When
concrete has reached above the cut of level, tremie pipe will be
withdrawn completely.
Page 16 of 28
Figure 11: Bored pile concreting (Tremie method)
Bored pile shall be concreted to a height at least 1m above the cut off
level and at least 0.5m above existing ground level to ensure the
concrete quality and integrity of the bored pile. Excess concrete shall
be removed to the specified cut off level once the concrete has
hardened prior to construction of pile cap. SC/PDP will be informed for
joint measure using plumb to confirm the top of concrete level.
Temporary casing shall be withdrawn slowly using vibratory hammer/
turntable and assisted by crawler crane to ensure no necking of the
pile at any level. Surface level of the sound, good concrete shall be
maintained at least 1.0m above the cut off level and at least 0.5m
above existing ground level before tremie pipe withdrawn. Casing shall
be extracted within 1 hours after placing of last pouring.
Figure 12: Extraction of temporary casing
Page 17 of 28
Any empty bore length will be normally backfilled with proper
compaction using previous excavated material/ suitable backfill
material after initial set of concrete and before complete withdrawal of
the temporary casing in cases where the concrete level is not brought
to the top of existing ground level.
Hacking of pile head shall be trim to the require cut off level and joint
measured by SC/PDP using plumb to confirm the top of concrete level
and recorded under SIR. The As-Built SIR will be compiled to SC/PDP
within 3 days.
After installing the rebar cage,
Upon completion of all piling works, the pile eccentricity and pile head
level will be checked by surveyor and subsequently produce the As-
Built drawings endorsed by the licensed surveyor showing the position
of piles as installed prior to pile cap construction.
1.6.8 Keep Field Records
There is no disturbing of concrete until it is fully hardened. When the
bore piles installation has been completed, the piling records shall
consist of below: -
a. Quality control inspection checklist
b. Pile bore log
c. Rebar cage check record
d. Pile concreting record
e. Pile displacement record
Borelog record and field record will be provided to PDP representative
the next following day before afternoon prior to works drilling ongoing.
All joint survey will be carried out between PDP/ WPC.
1.6.9 Survey of As-Built Pile Position
Pile As-Built position will be jointly surveyed by competent surveyor
and PDP/SC representatives. The tolerances as specified in the
technical specification section 120 (KVLRT3-MRCBGK-GEN-PMGT-
SPC-000002): Section 210.1.13 are: -
a. Deviation from axis of pile on plane not more than 75mm
b. Deviation from vertical, maximum 1:75
The deviation will be at any direction and will be shown in the As- Built
Drawing. Pile position and its eccentricity shall be determined by
having joint verification with PDP/SC along with surveyor after
completion of pile head hacking to the required intercept level. A steel
circular ring template according to the actual pile diameter shall be
Page 18 of 28
prepared and inserted to the casted bored pile and adjust to the best
position having to balance eccentricity between the casted concrete,
rebar cage and concrete cover. Once the position is determined and
agreed by all who present for the inspection, surveyor will mark out the
location using spray paint and survey the coordinate of the pile
position and it will be the As-Built for the actual pile position.
Figure 13: Illustration of determine pile position and its eccentricity
The record must be forwarded to PDP/SC before proceed with pile
head preparation. Submitted As-Built drawing shall be endorsed by
license surveyor.
2.0 SAFETY AND HEALTH
2.1 Job Safety & Health Analysis
Refer Appendix 5.2 for Job Safety & Health Analysis (JSA)
2.2 Information to Personnel
A briefing of the JSA of this method statement will be given to staff/
subcontractor involved in this works. The attendance record will be keep with
the JSA.
2.3 Emergency Arrangements
ORGANIZATION CHART OF THE EMERGENCY RESPONCE TEAM (ERT)
Page 19 of 28
2.4 Permit Requirements
No Description Authority Responsible
Personnel
1. Permit to Work WCT Safety & Health
personnel
3.0 ENVIRONMENTAL ISSUES
3.1 Environmental Aspects, Impacts & Control Measures
All activities at work site shall comply with requirements for Construction and
Completion of Light Rail Transit Line3 (LRT3) from Bandar Utama to Johan
Setia – GS03. Guidelines of this mitigation are tabulated in Environmental
Aspect & Impact Register as per Appendix 5.3.
4.0 QUALITY ASSURANCE & QUALITY CONTROL
4.1 Contractual Requirements
ERT CONTROLLER
Project Manager
Ta Kok Chang
019-2653837
DEPUTY ERT
CONTROLLER
Safety & Health Manager
Norazmi Mohamed Tahir
012-2327338
COMMUNICATION
COORDINATOR
Salmi Azuriza Bt
Che Ali
012-6546905
FIRE FIGHTING
/DAMAGE
CONTROL
COORDINATOR
Shahrolamri B.
Mohd Suhaimi
010-4335359
TRAFFIC
COORDINATOR
Rofie Mohamad
012-5058540
SEARCH &
RESCUE
COORDINATOR
Mohd Fahmi Bin
Zulkifli
013-2225946
EVACUATION
COORDINATOR
Mohd Attef Bin
Elman
019-3124638
First Aid
Coordinator
Mohd
Zahiruddin Bin
Mohd Zahari
014-8061784
Page 20 of 28
It is the contractual obligation of WPC to meet all the requirement outlines in:
-
a) Project Quality Plan
b) WCT Project Procedures.
Inspection and Testing (WCT-P-4.10)
Inspection, Measuring and Test Equipment
(WCT-P-4.11)
Inspection and Test Status (WCT-P-4.12)
Control of Nonconforming Product and Work
(WCT-P-4.13)
Handling, Storage, Packaging, Preservation and
Delivery (WCT-P-4.15)
c) General Specification; Section 8 – Quality Assurance and
Quality Control (QAQC)
4.2 Inspection & Testing
All inspection and test activities shall be undertaken in accordance with: -
a) General Specification: Section 9 – Inspection, Testing and
Commissioning and Integrated Test
b) Inspection and Test Plan (ITP) for Bored Piling
(Appendix 5.4)
4.3 Follow up & Evaluation
a) All necessary supervision and stringent checks shall be made during work
progress and final work done to ensure conformance with the
specifications, drawings and procedures as provided. Inspection and
supervision shall use the approved checklists (Appendix 5.5).
b) All materials used as permanent works shall only use the approved
material.
c) The handling, packaging and storage the material shall according to the
manufacturer’s instruction and all relevant government authorities.
d) Consultants shall issue the non-conformance report when the work or
material is not conforming or fail to meet the requirements outlined in the
Inspection and test plan.
e) The RFIs, checklists, records forms shall be ensured verified, completed
and comments (if any) and shall be closed and resolved to finalize all the
records.
f) The defects shall be identified, investigate and set approval/ agreement
from PDP/ SC before start any rectification work.
5.0 APPENDICES
5.1 Construction Sequence Flow
Page 21 of 28
5.2 Job Safety & Health Analysis (JSA)
5.3 Environmental Aspect Impact Register (EAIR)
5.4 Inspection Test Plan (ITP)
5.5 Quality Control Site Inspection Checklist
5.6 Recycle System for Drilling Fluid
5.7 Proposed Location of Bore Pile
Page 22 of 28
Appendix 5.1
Construction Sequence
FOR BORED PILING
Preparation of platform
work area
Setting out and
positioning bore pile
point
Boring Operation
Cleaning of pile base
and verification of pile
length
Spoil removal
Installation of
reinforcement cage
Concreting of Bored Pile
Keep field records
Survey as-built pile
position
Start
End
Page 23 of 28
Appendix 5.2
Job Safety & Health Analysis (JSA)
FOR BORED PILING
Page 24 of 28
Appendix 5.3
Environmental Aspect Impact
Register (EAIR)
FOR BORED PILING
Page 25 of 28
Appendix 5.4
Inspection & Test Plan (ITP)
FOR BORED PILING
Page 26 of 28
Appendix 5.5
Quality Control Site Inspection
Checklist
FOR BORED PILING
Page 27 of 28
Appendix 5.6
Recycle System for Drilling Fluid
FOR BORED PILING
Page 28 of 28
Appendix 5.7
Proposed Location of Bore Pile
FOR BORED PILING