7/27/2019 IR Post Tension Works
1/2
INSPECTION REQUEST FORM FOR POST-TENSIONING WORK 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 Site Engineer 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)
work approved to start:______________________
LTA
_______________________________
_________________________________________QP(S) Name &Singnature/Date
work completed on:_______________________
The above process for request for inspection of work by Contractor and approval by QP(S) is noted.
LTA's representative/Date/Time
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 Contractors is adequate/not adequate*
QP(S) may proceed Request Rejected
*delete where appropriate
7/27/2019 IR Post Tension Works
2/2
CHECKLIST FOR POST-TENSIONING WORK
Location:
S/No Description of Works Checked by Confirmed
Contractor QP(S)
1 Check before casting:1.1 Check milling certificate of prestressing cable
1.2 Check number of cables
1.3 Check profile and alignment of tendon (no kink)
1.4 Check sheaths free from damage
1.5 Proper coupling of sheathing
1.6 Ensure tendons firmly and rigidly fixed
1.7 Check anchorage details (i.e. coil reinforcement and recesses.)
1.8 Check proper fixing and water-tightness of grout vent
1.9 Use request form for concreting work
2 Check before tensioning operation:
2.1 Availability of full instructions issued by designer (e.g. sequence of
tensioning, maximum jack pressure, theoretical extension,
corresponding tolerances on such extension.
2.2 Check calibration of jacks and pressure gauges
(Submit calibration cert. of jacks and pressure gauges)
Reference/Serial No. of jacks and gauges:
___________________________________________________
2.3 Minimum concrete strength specified is achieved
2.4 Ensure precast member free to move during stressing.
2.5 Ensure area directly behind stressing jacks are cleared
2.6 Display warning signs (e.g. DANGER - Tensioning I n Progress)
3 Check during tensioning operation:
3.1 Record forces and corresponding extensions
plot on graph
3.2 Compare actual and theoretical extensions of
each tendon within +/-5% tolerance
4 Check after tensioning operation:
4.1 Visual inspection of concrete surface for cracks
4.2 No grouting, cut off tendons before Project
Officer's approval
5 Check sufficient temporary traffic devices if lane
closure is required
6 Others
NO:
Date/Time: Chainage:
Top Related