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As of August 31, 2002

Physical Progress

Contractor

JV of Thang Long and Truong Son

Commencement of the Works

1st July 2001

Time Elapsed (days) 426 of 900 (47.33%)
Progress  

North Approach

under construction

Lang Co Bridge (867m)

Bored Piling for P7, P9, P14, P17, P18, P19, P22 & P23 completed. Concrete Work for P7, P14, P22, P23.

South Approach

finished embankment

Photographs

Construction of girder at casting yard No. 1
Pouring concrete girder at casting yard No. 1
Construction of girder at casting yard No. 1
Girders on site
P17 & P18 have been completed
Construction of bored pile at P21
Construction of pier shaft P22
Construction of P22' base
Construction of pier shaft P23
Construction of bored pile at P24
Sand bags additionally of islet
Construction of North embankment

 

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Construction Supervision

Summary 

Bored Piling
Pier 7, Pier 8, Pier 9, Pier 12, Pier 14, Pier 17, Pier 18, Pier 19, Pier 22, and Pier 23 are completed bored piling.
Total 128 nos. of bored piling are completed up to present.
Pier 10, Pier 11, Pier 13, Pier 15, Pier 16, Pier 21 and Pier 24 are under construction of bored piling.

Substructure
Pier 17 and Pier 18 have been completed concrete works up to cross head.
Pier 7, Pier 14, Pier 22 and Pier No.23 are under construction of substructure.

Superstructure
Superstructure is not commenced yet.

Approach Road
North approach road is under construction and South approach road is finished embankment.

Girder Production
Two places of girder production yard P19 and A2 are under operation.
31 nos. of girders are completed of production.

Permanent Works

  • Bored Piling:

Six bored piling machines R-9G, TRC, Reffer, GPS, ED5500 and Bauer are mobilized to the site, and under the condition of operation.

Pier No.7: 8 of 8 nos. of bored piles have completed.

Pier No.8: 8 of 8 nos. of bored piles have completed.

Pier No.9: 10 of 10 nos. of bored piles have completed.

Pier No.10: 3 of 9 nos. of bored piles are finished and continue piling work.

Pier No.11: 8 of 9 nos. of bored piles are finished and continue piling work.

Pier No.12: 12 of 12 nos. of bored piles have been completed.

Pier 13: 1 of 9 nos. of bored piles are finished and continue piling work.Pier No.14: 10 of 10 nos. of bored piles have been completed.

Pier No.15: 5 of 12 nos. of bored piles are finished and continue piling work.

Pier No.16: 1 of 10 nos. of bored piles are finished and continue piling work.

Pier No.17: 10 of 10 nos. of bored piles have been completed. Additional pile No.7' has constructed because Pile No.7 was rejected due to the result of working record and sonic test.

Pier No.18: 12 of 12 nos. of bored piles have been completed.

Pier No.19: 10 of 10 nos. of bored piles have been completed but No.6 pile is waiting for sonic test for approval because this pile had trouble at the concrete pouring time.

Pier No.21: 9 of 12 nos. of bored piles are finished and continue piling work.

Pier No.22: 9 of 9 nos. of bored piles have been completed.

Pier No.23: 9 of 9 nos. of bored piles have been completed.

Pier No.24: 3 of 6 nos. of bored piles are finished and continue piling work.

  • Substructure:

Pier No.7: Sheet piling work has commenced but it has met boulders during sheet pile driving.

Pier No.14: Footing concrete has completed and continuing column concrete work.

Pier No.17: Concrete work has been completed up to cross head.

Pier No.18: Concrete work has been completed up to cross head.

Pier No.22: Footing concrete has completed and continuing column concrete work.

Pier No.23: Footing concrete has completed and continuing column concrete work

  • Superstructure:

Superstructure work is not commenced yet.

  • Approach Road

North approach road is finished embankment up to 50,000m3 and continue.

South approach road is finished embankment up to 1,000m3.

  • Girder Production

Production yard P19: 27 nos. of girder are finished production and will continue.

Production yard A2: 4 nos. of girder are finished production and will continue.

  • Schedule overview

Total schedule is 114 days behind at end of August 2002 based on the Clause 14.1 schedule.

Three critical paths are running on the schedule now.

CP1: A1 - P1 - P2 - Launching from A1 is 114 days behind at the end of August 2002.

CP2: P10 - P3 - P4 - P5 -P6 is 37 days behind.

CP3: P24 - A2 - P25 - Launching from A2 is 54 days behind.

Activities on the CP1 has no action at this moment, therefore schedule is delaying day by day. There is potential to delay more in future. Counter measure for this critical path is required urgently.

P24 of CP3 has met boulders during pile driving time and it takes more times than expected.

This critical path has also potential to delay. We are close watching about progress.

Construction method of Pier No.1 to Pier No.6 has decided back to floating method with considering of environmental conditions.

Activities for Coming Months
  • Permanent Works:

- Construction of piers and abutment.

- Construction of girders.

- Construction of embankment.

 


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