INSPECTION TEST PLAN (ITP): BORED PILE WORK (CIVIL WORK)

TABLE OF CONTENTS

Section            Description

0.1        Inspection Categories

0.2        Notice(Request) of Inspection

1.0                              Pre-Activity Check

2.0                              Boring of Pile

3.0                              Pre- Pour Inspection – Trial and Production

4.0                              Concrete Reception and Placement

5.0                              Testing

6.0                              Cleaning

7.0                              Attachments

Attachment 1 – ITR-QGI–001-Rev1 REQUEST FOR INSPECTION/TEST

Attachment 2 – ITR-QCI–001 INSPECTION AND TEST REPORT FOR SURVEY

Attachment 3 – ITR-QCI–002-Rev1 INSPECTION AND TEST REPORT FOR BORED PILE

Attachment 4 – ITR-QCI–003 BORED PILE STABILIZING FLUID TEST RECORD

Attachment 5 – ITR-QCI–004 LOAD TEST RECORD

0.1      Inspection Categories

The following inspection categories shall be used to identify the extent of inspection for each inspection activity within the ITP

I      Inspection items:

       It is the primary responsibility of Subcontractor and/or CONTRACTOR’s Quality Department to carry out the necessary inspection and test to assure conformance to the Contract requirements, drawings, specification and related codes and standards.

S     Surveillance

Monitor the status of work and materials and analyses of records on a periodical basis to ensure that specified requirements are being fulfilled. 

W    Witness

As mandatory items of inspection, examination, or test this stage shall be notified in advance by the Subcontractor or CONTRACTOR’s construction department and shall be performed under witness of the relevant Inspection Authority. However, work may proceed if the relevant authority is not available at the required time.

H    HOLD

Hold point (H) means a point, designated by prior stated agreement in the inspection and test plan(s), at which the performance of an activity must be stopped and put an hold until specified actions are completed.

R     Review

         Review results of inspection, examination or test.

0.2  Notice (Request) of Inspection

The Subcontractor shall submit to CONTRACTOR a ‘Notice of Inspection Request one (1) day before the inspection is to be carried out. The request shall contain information as follows:

·         Inspection item(s).

·         Responsibility Category. (as defined within the ITP)

·         Date, place and time of inspection.

·         Requirement for third party inspection (if any).

·         Any other relevant information.

The Subcontractor may proceed with the inspection activity at the specified time without the presence of CONTRACTOR or COMPANY for witness inspection unless a delay has been previously advised and agreed by either party.

·         The Notice of Inspection shall be sequentially numbered by the subcontractor in accordance with   SUT1-Z05-Q 00-4-001 ‘Numbering Procedure for Site Quality Documents’.

No.	Activity and Characteristic to be Checked	Reference Documents (Codes/ Std/ Spec. / Proc.)	Acceptance Criteria					Verifying Document	Inspection Points
									Sub-Con	CONTR.	SCC / RE / RTO	ITL
1.0	Pre-Activity Check
1.1	Verify method statement for piling is approval	Method  statement	Approval method statement					Method statement	R	R	R
1.2	Verification of Design Mix For Concrete - Type of Concete - Mix Propotion - Slump	Approval Construction Drawing SUTO-ALL-C08-4-002 to 006	Approved /Accepted Concrete Design Mix by Engineer					Trial Mix Design Test Report	I	W	W
1.3	Concrete Design Mix & Method of Casting	Approval Construction Drawing SUTO-ALL-C08-4-002 to 006	As Per Project Spec. & Engineer Design / Instruction (C40 & C50)					Trial Mix Result Report & MS	I	R	R
1.4	Reinforcement Steel	Approval Construction Drawing SUTO-ALL-C08-4-002 to 006	Rebar Test Result Achieve requirement of specification / applicable standard T-High Yield, Rebar Grade 460					Rebar Test Report	I	W	W	I
1.5	Check for bench mark	Sembcorp Bench Mark.  New Bench mark(If necessary)	Confirmation of Sembcorp bench mark and Verified new datum.					ITR-QCI-001 INSPECTION AND TEST REPORT  FOR SURVEY	I	I	S
1.6	Verify pile design is approval.	Approval Construction Drawing SUTO-ALL-C08-4-002 to 006	Approval Construction Drawing					Approval Construction Drawing	I	R	R
2.0	Boring of Pile
2.1	Notification of Boring Work	-	Min. 1 day before commencement					ITR-QGI-001-Rev 1 REQUEST FOR INSPECTION & TEST	I	R	R
2.2	Survey of Pile Location –             Trial and Production	Approval Construction Drawing SUTO-ALL-C08-4-002 to 006	Location Plan : Coordinate ±75mm, Elevation, Horizontal position					ITR-QCI-001 INSPECTION & TEST REPORT FOR SURVEY	I	S	S
2.3	Verification of Casing -  Drilling Accecories diameter -  Casing diameter -  Verticality of Casing -  Top casing level -  Setting out position	Approval Construction Drawing SUTO-ALL-C08-4-002 to 006	BS 5400 – Grade 300, TH’K 6mm Min.					ITR-QCI-002-Rev 1 INSPECTION & TEST REPORT FOR BORED PILE	I	W	S
			Veriticality of Casing			1/200 for CBP; 1/75 for foundation pile
			Setting out position			+/- 25m for CBP; +/- 75mm for foundation pile
2.4	Monitoring Boring Progess -  Rate of Penetration / Drilling -  Monitoring Drilling in Soil or Rock (Change in tools from Soil to Rock Where Applicable) -  Verticality of Machinery	Method of Statement SUTO-ALL-C08-4-002 to 006	As per Project Specification.					ITR-QCI-002-Rev 1 INSPECTION & TEST REPORT FOR BORED PILE ITR-QCI-002-Rev-1 BORING RECORD	I	W	I
3.0	Pre-Pour inspection  - Trial and Production
3.1	Pile Termination Check -  Pile Toe has achieved as per Engineer Instruction -  Adequate Cleaning of he Base	Approval For Construction Drawing SUTO-ALL-C08-4-002 to 006	As per Project Spec. & AFC Drawing Disturbed/Softened soil shall be removed					ITR-QCI-002-Rev 1 INSPECTION & TEST REPORT FOR BORED PILE	I	W	S(SCC) H(RE/RTO)
3.2	Rebar Cage Check -  No. of main rebar -  Size of main rebar -  Spacing of links -  Size of Links -  Splicing length -  Diameter of the cag -  Installation of Rebar Cage -  Lifting Point detail	Approval For Construction Drawing SUTO-ALL-C08-4-002 to 006	As per Project Spec. & AFC Drawing Checklist Item.					ITR-QCI-002-Rev 1 INSPECTION & TEST REPORT FOR BORED PILE	I	W	W
3.3	Stabilizing Fluid -  Density -  Viscocity -  pH Test -  Sand Content	Method of Statement SUTO-ALL-C08-4-002 to 006	Property to be measure	Fresh mixed fluid	Prior to placing steel cage		Test method	ITR-QCI-003 BORED PILE STABILIZING FLUID TEST RECORD	I	W	W
			Density	<1.06 g/ml	<1.15 g/ml		Mud density balance
			Viscosity	40-65s	NA		Marsh cone
			pH	8-11	8-11		pH indicator paper
			Sand Content	≤4%	≤4%		Wet seiving
4.0	Concrete Reception and Placement
4.1	Check of concrete grade as per approved Mix. Design and Q’ty	Approval For Construction Drawing SUTO-ALL-C08-4-002 to 006	Verify the correct concrete Mix design and grade used and Q’ty as per estimated volumn. Cube Test result acceptance criteria					ITR-QCI-002-Rev 1 INSPECTION & TEST REPORT FOR BORED PILE	I	W	S
4.2	-  Slump -  Temperature -  Tremie pipe length -  Concrete level -  Over cast	-  Mix design /DO -  Mix Design/ DO -  Mix Design -  Sounding -  Method Statement	As per Project Spec. & AFC Drawing					ITR-QCI-002-Rev 1 INSPECTION & TEST REPORT FOR BORED PILE	I	W	R(SCC) W(RE/RTO)
4.3	Sampling of cube test	Approval Construction Drawing SUTO-ALL-C08-4-002 to 006	As per Engineer Instruction					Lab. Test  Report	I	W	R	I
4.4	Concrete Quantity Check	N.A	Design & Actual Quantity					ITR-QCI-002-Rev 1 INSPECTION & TEST REPORT FOR BORED PILE	I	R	R
4.5	Check time between Truck leaving batching plant and Pouring	Approved Design Mix SUTO-ALL-C08-4-002 to 006	Time not to exceed.					ITR-QCI-002-Rev 1 INSPECTION & TEST REPORT FOR BORED PILE	I	S	S
5.0	Testing
5.1	Vertification of Test Method	Approval Construction Drawing SUTO-ALL-C08-4-002 to 006	Conforming  to requirement of specification and approve Test Method					Method Statement	I	R	R
5.2	Vertification of Pile testing Laboratory	SUTO-ALL-C08-4-002 to 006	Independent test Lab. Approved by company verify theTest & measuring Instrument calibrated					Calibration Report	I	R	R	I
5.3	Pile Load Test / Type & Quantity	Approval Construction Drawing SUTO-ALL-C08-4-002 to 006	*. Static Load Pile Test : 1% of Total Production Pile or One pile test for each pile typeOne pile test for each pile type *. Dynamic Test Pile : 5% of Production Piles all test pile *. Integrity Test Pile : All working Pile					Test Report ITR-QCI-004 Load Test Record	I	W	H
5.4	Pile Test Acceptance Criteria for Working pile	Approval Construction Drawing SUTO-ALL-C08-4-002 to 006	Allowable Settlement: Short Term = 15mm & Long Term = 25mm					Test Report	I	R	R
5.5	Submission of test results to company	SUTO-ALL-C08-4-002 to 006						Test Report of Lab.	I	R	R
6.0	Cleaning
6.1	Confirm Concrete debris, etc	SUTO-ALL-C08-4-002 to 006	Visual					Visual	I	S	S

LEGEND : ITL : Independent Testing Laboratory   I : Execution of Inspection and Test      R: Review    S : Surveillance     W : Witness    H : Hold Point