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INSPECTION REQUEST FORM FOR DIAPHRAGM WALL NO:

Unless otherwise approved,this inspection request form shall be submitted

during the daily morning meeting among LTA,Contractor and QP(S)

Contractor: Project:

To: Date:

LTA Time:

The work described below has been inspected by our supervisory personnel and is complete

and ready for your inspection. A checklist is attached overleaf.

Location

Checked and Requested By:

Chainage

Activity

Drawings Used for Construction

Other DescriptionContractor's PM Name & Signature

INITIAL INSPECTION DECISION BY QP(S)

We have inspected the above referenced works and found them acceptable. You may proceed.

However, please return the completed checklist upon completion of the remaining work.

You cannot proceed. Please carry out corrective works as noted on the checklist and

submit a fresh request for inspection.

Other comments:

RTO/RE Name & Signature/ Date

FINAL INSPECTION DECISION BY QP(S)

LTA

LTA's representative/date/time

_______________________________________

QP(S) Name&Signature/Date

work approved to start:_____________________ work completed on:_________________________

The above process for request for inspection of work by Contractor and approval by QP(S) is noted.

___________________________________

SAMWOH CORPORATION PTE LTD SK E&C

ER296-CONSTRUCTION AND COMPLECTION OF SENTOSA

GATEWAY TUNNEL FROM TELOK BLANGAH ROAD TO KEPPEL

ROAD / KAMPONG BAHRU ROAD/ LOWER DELTA ROAD AND

ASSOCIATED ROAD WIDENING WORKS INTERCHANGE

The meeting noted that the information provided by the Contractor is adequate/not adequate*.

QP(S) may proceed Request Rejected*delete where appropriate

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CHECKLIST FOR DIAPHRAGM WALL

Chainage:

S/No Description of Works Checked by Confirmed by

Contractor QP(S)

1 Check setting out

2 Check services plan

3 Locate services with cable detector and digging trial trench

4 Check soil sample at trench base and confirm by contractor's

Professional Engineer

5 Check certificate of fitness of excavating crane & service crane

6 Check certificate of crane operator

7 Check excavating crane and service crane located on firm bases

8 Check cover blocks/spacers

9 Check steel cage reinforcement

10 Ensure cleanliness of excavated trench

11 Provision of tremie pipe

12 Quantity of ready-mix concrete : m3

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13 Check concrete grade Grade :

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14 Take slump test Desired slump mm

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15 Take cube samplesNo of sets: Reference:

16 Check verticality of panel

17 Check calculated depth of penetration

18 Check CWS joint/Water stop

19 Check cut-off level of panel

20 Check provision of couplers

21 Check recess to form box-outs between the steel cages and the

near face of the diaphragm wall

22 Check sufficient temporary traffic devices if lane

closure is required

23 Others

No:

Date/Time: Location: