Progress update (November to March) 03/23/2009 2

Transcription

1 Second Avenue Subway Construction Progress Update (November to March) Presented by S3 Tunnel Constructors AND MTA CAPITAL CONSTRUCTION March 23,

2 Topics Covered Progress update (November to March) Launch Box Update Secant Wall Slurry Wall Concrete Decking Traffic Switch to East Side Shaft Site work at 69 th St. and 72 nd St. Upcoming Work 2

3 Launch Box Update Secant Pile Wall Construction Between 91 st and 93 rd Street 3

4 Secant Pile Wall Construction- 91 st to 93 rd St. Current Status Secant Wall Construction on West Side Completed Continuing Secant Wall Construction on East Side 4

5 Location of Secant Walls Portions Completely Installed SECANT WALL Portion Currently Being Installed 5

6 Secant Pile Wall Construction- 91 st to 93 rd St. 6

7 Secant Pile Wall Construction- 91 st to 93 rd St. 7

8 Launch Box Update Slurry Wall Construction Between 93 rd and 95 th Street 8

9 Slurry Wall Construction- 93 rd to 95 th St. Current Status Slurry Wall on West Side Completed Continuing to work on Slurry Wall Construction on East Side 9

10 Location for Slurry walls Portion Completely Installed CANT WALL SLURRY WALL Portion Being Installed Currently NORTH 10

11 Slurry Wall Work 2 nd Avenue Looking North Building Building Future 2 nd Avenue Subway 11

12 Slurry Wall Guide Wall 12

13 Slurry Wall Panel Excavation 13

14 Slurry Wall New Fence Panels to Protect Pedestrians 14

15 Slurry Wall Installation of Rebar Cages 15

16 Launch Box Update Concrete Decking Plan 16

17 Concrete Decking Plan Profile Looking North on Second Avenue Cap Beam Concrete Deck Panel Deck Beam Splice Box (Beam Pocket) 17

18 Concrete Decking Plan Current Status Cap Beams Are ALL Installed on the West Side All West Side Deck Beams are Installed All West Side Concrete Deck Panels are Installed Continuing Utility Relocation & Work Under Concrete Decking 18

19 Concrete Decking Construction Looking South on Second Avenue 19

20 Concrete Decking Construction Looking East on Second Avenue-MTA installed Rubber Noise Reduction Pads 20

21 Concrete Decking Construction Looking from Top of 2 nd Avenue 21

22 Launch Box Update Traffic Switch to East Side 22

23 Traffic Switch to East Side Switched Traffic to East Side on 03/10/

24 ShaftSiteworkat69 Site at th St. and 72 nd nd St St. 24

25 Shaft Site work at 69 th St. and 72 nd St. Current Status Pre-Construction Staging and Wok Zone Set-up Completed Sidewalk on West Side have been Reduced to 7 Feet All Parking Meters have been Removed Street Lights and Traffic Signals have been Relocated New Traffic Lane on West Side Completed Traffic Shifted to West Side Continuing Utility Relocation on East Side 25

26 Shaft Area Overall MPT Plan 69 th St. 70 th St. 72 nd 73 rd St. 71 st St. St. 26

27 69 th St. Shaft Section 27

28 Construction of New Traffic Lane on West Side 28

29 Utilities Relocation Work At Shafts 29

30 Utilities Relocation Work At Shafts 30

31 Shaft Area Bus Stop Relocation Removed Bus Stops between 69 th St. and 70 th St. and between 71 st St. and 72 nd St. New Bus Stop Between 70 th St. and 71 st St. has been Established 31

32 69th Street Garbage Disposal Plan Designated Garbage Disposal Areas 69 th Street Garbage Disposal Plan has been Coordinated d with Community and Implemented 32

33 72 nd Street Garbage Disposal Plan 72 nd Street Garbage Disposal Plan has been Coordinated with Community and Implemented 33

34 Upcoming Work Launch Box: Continue Slurry Wall Construction on East Side Continue Secant Wall Construction on East Side Continue placing Deck Beams and Concrete Deck Panels on East Side Continue Utility Work Under the Deck on East Side Continue Launch Box Excavation Controlled Rock Blasting and Removal Preparation 34

35 Controlled Rock Blasting and Removal The MTA has Performed Building Inspections Before Construction Started. The Buildings have Again been Inspected by Monitoring / Engineering Consultant Before this work Starts. Controlled Blasting Work has been Designed and Analyzed by a Specialty Blasting Consulting Expert. The Blasting Plans Are now Under Review and Must be Approved by NY City, Fire Department- Explosives Unit. NY City Fire Department Permit Will be Issued For All Aspects of This Blasting Work. Controlled Blasting and Rock Removal will be performed under a Permit Issued by NY City Dept. of Environmental Protection (DEP) The MTA has Installed Blasting Vibration Monitoring Equipment in Buildings at the Blast Area. Controlled Blasting WILL be monitored by NY City-Fire Dept, Explosives Unit. 35

36 Upcoming Work Shaft Area 69 th Street to 72 nd Street: Start Electric and ECS (Telephone) Utility Relocations. Start Gas Main Relocation. Start Steam Main Relocation. Start Water Main Relocation. 36

37 37

38 Second Avenue Subway Project Community Board 8 March 23 rd, 2009 March 27th, 2007

39 PROJECT SCHEDULE FOR 2009 DESIGN Final Design is scheduled to be completed in December 2009 PROCUREMENT IN 2009 Contract 2A: 96th Street Station - Site Work & Heavy Civil > Duration: 43 Months from April 2009 Contact 5A: 86 th Street Station - Open Cuts & Utilities Relocation > Duration: 22 Months from June 2009

40 Contract 2A: Scope of Work 92 nd Street 93 rd Street 94 th Street 95 th Street 96 th Street 97 th Street Existing Tunnel Connection Contract 2A: Site Work and Heavy Civil Ongoing Construction for TBM launch Box (Contract t 1) Contract 2A: 96th Street Station - Site Work & Heavy Civil > Duration: 43 Months from April 2009

41 Contract 5A Work Zone Lay out Plan West Side Stage of 2 nd Avenue Work Zone 83 rd Street 85 th Street 87 th Street Work Zone 2 nd Avenue 83 rd Street 85 th Street 87 th Street 82 nd Street 84 th Street 86 th Street 88 th Street East Side Stage of 2 nd Avenue Work Zone Work Zone 2 nd Avenue 82 nd Street 84 th Street 86 th Street 88 th Street Contact 5A: 86 th Street Station - Open Cuts & Utilities Relocation > Duration: 22 Months from June 2009