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East Side Access OutreachEast Side Access Outreach
April 2007
Contractor Outreach – CQ031 (April 2007)
Doing Businesswith
MTACC
Contractor Outreach – CQ031 (April 2007)
MTACCis a
Cooperative Owner / Project Partner
Contractor Outreach – CQ031 (April 2007)
MTACC is Committed to:MTACC is Committed to:
• Pro-active Project Management
• Continual Improvement & Use of Best Practices
• Sensitivity to Construction Industry Concerns
• Overcoming Obstacles in a timely manner
Contractor Outreach – CQ031 (April 2007)
How MTACC Meets the Challenge: How MTACC Meets the Challenge:
• Careful analysis of what’s going on in the industry
• Solid, accountable Program Management
• Reaching out and talking to contractors to address their issues – JUST LIKE TODAY!
Contractor Outreach – CQ031 (April 2007)
Focus on Project ManagementFocus on Project Management
• Foster timely decision-making at all levels
• Increase staff training
• Conduct Constructability Reviews
• Building-in quality and safety programs
• Partnering
• Monitor budget and schedule
• Deal with utilities early and often
Contractor Outreach – CQ031 (April 2007)
Making Changes – Procurement ImprovementsMaking Changes – Procurement Improvements
• Flexibility in contract strategies and terms
• Introduce the use of early completion incentives
• Considering bi-monthly payments on special projects
• Use of escalation provisions if needed
Contractor Outreach – CQ031 (April 2007)
Contract IssuesContract Issues
• Negotiation of ADR Provisions
• Timely Change Order Process
• Monitoring to Make Further Improvements– Timely Progress Payment Processing
• Handling of Geotechnical Information – Use of Geotechnical Interpretive Reports
Contractor Outreach – CQ031 (April 2007)
Bottom LineBottom Line
• We respect our consultants and contractors, and recognize the need to work as partners.
• Let’s continue to dialogue to further improve our business practices to meet all of our needs.
• We only succeed if we all succeed!
Contractor Outreach – CQ031 (April 2007)
Procurement Strategy - Negotiated ProcurementProcurement Strategy - Negotiated Procurement
• Hybrid used at MTACC which combines the advantages of a fully designed project with the flexibility of a negotiated procurement
• RFP issued based on 100% design
• Negotiations permit owner and proposer to address specific project risks
• Translates into overall better project definition and cost savings
Contractor Outreach – CQ031 (April 2007)
MTA Regional Commuter Rail SystemMTA Regional Commuter Rail System
Contractor Outreach – CQ031 (April 2007)
Queens ConstructionQueens Construction
Contractor Outreach – CQ031 (April 2007)
CQ031 OverviewCQ031 Overview
• Scope Summary– Four soft-ground bored tunnels, connecting Plaza
Interlocking with the LIRR Mainline and the Mid-Day Storage Yard
– Three ventilation shafts
– Approach structures and retaining walls
• Schedule– Contract Advertised 4th Quarter of 2007
– Construction Starts 1st Quarter of 2008
Contractor Outreach – CQ031 (April 2007)
Elements of CQ031 Elements of CQ031
Track ATrack ATrack B/CTrack B/C
LIRR LeadLIRR Lead
Track DTrack D
Honeywell St
Honeywell St
3939 thth St St
Mid
-Day
Sto
rage
Yar
d
Mid
-Day
Sto
rage
Yar
d
Sunn
ysid
e Su
nnys
ide
Yar
dY
ard
TBM Launch WallTBM Launch Wall
TBMTBMCut & CoverCut & Cover
(CQ028)(CQ028)
Westbound BypassWestbound Bypass
Contractor Outreach – CQ031 (April 2007)
Major Construction Elements – CQ031 (1 of 2)Major Construction Elements – CQ031 (1 of 2)
• Bored Tunnels (10,500 ft)– 19’-6” ID, segmental liner
– Four Tunnels (A, B/C, D and Yard Lead)
– Ground Treatment for TBM launch, mixed face, cross passages
– Instrumentation
• Tunnel Trackwork and Tunnel Bench
• Ventilation & Emergency Exit Shafts + 2 fan power substations– Three Tunnel Emergency Exit (A, B/C, Yard Lead) & Sewer Relocation
– Track D emergency Exit
– Yard Lead Emergency Exit
• Retaining Walls– Westbound Bypass Retaining Wall
– Penn Lead Track Retaining Wall & C08 Substation Foundation
Contractor Outreach – CQ031 (April 2007)
Major Construction Elements – CQ031 (2 of 2)Major Construction Elements – CQ031 (2 of 2)
• Cut and Cover Approach Structures– Yard Lead Approach Structure, S&I Access Road Relocation
– Closure of TBM reception pits A and D
• Demolition– 43rd Street Private Properties
– Remaining elements of Amtrak Substation 1A
– Sunnyside Connector Track and Transformers at Honeywell St. Bridge
• Underpinning– Honeywell Street Bridge Piers 4, 5 and 6
– 39th Street Bridge Pier 1S
– General Motors Access Bridge South Pier
– Existing 43rd Street Bridge Piers 1 through 4 and Sewer Relocation
– Harold Signal Tower
Contractor Outreach – CQ031 (April 2007)
Bored TunnelsBored Tunnels
Contractor Outreach – CQ031 (April 2007)
Bored TunnelsBored Tunnels
Contractor Outreach – CQ031 (April 2007)
Bored TunnelsBored Tunnels
Contractor Outreach – CQ031 (April 2007)
Bored TunnelsBored Tunnels
Contractor Outreach – CQ031 (April 2007)
Bored TunnelsBored Tunnels
Contractor Outreach – CQ031 (April 2007)
Bored TunnelsBored Tunnels
Contractor Outreach – CQ031 (April 2007)
Bored TunnelsBored Tunnels
Two EPB or Slurry TBMs
Contractor Outreach – CQ031 (April 2007)
Bored Tunnels - Pre-Cast Segmental LinersBored Tunnels - Pre-Cast Segmental Liners
Contractor Outreach – CQ031 (April 2007)
Bored Tunnels - Section Through Launch Shaft: Rock/Soil InterfaceBored Tunnels - Section Through Launch Shaft: Rock/Soil Interface
A B/C D
Yard Lead
Contractor Outreach – CQ031 (April 2007)
Bored Tunnels - Ground TreatmentBored Tunnels - Ground Treatment
B/C
Yard Lead
LaunchShaft
Contractor Outreach – CQ031 (April 2007)
Bored Tunnels - Length of Tunneling Bored Tunnels - Length of Tunneling
SectionLength
TunnelLength
Track A Glacial Till 2,180 ft 2,180 ft
Track B/C Glacial Till 1,739 ft1,739 ft
Track DRock and Mixed Face 60 ft
Glacial Till 2,158 ft 2,218 ft
Yard LeadRock and Mixed Face 515 ft
4,384 ftGlacial Till 3,869 ft
10,523 ft 10,523 ft
Contractor Outreach – CQ031 (April 2007)
Bored Tunnels - Instrumentation & Predicted Settlement Contours Bored Tunnels - Instrumentation & Predicted Settlement Contours
Contractor Outreach – CQ031 (April 2007)
Bored Tunnels - Settlement Monitoring and LimitsBored Tunnels - Settlement Monitoring and Limits
Contractor Outreach – CQ031 (April 2007)
Manual and Automated Total Station Rail MonitoringManual and Automated Total Station Rail Monitoring
Reflector
Contractor Outreach – CQ031 (April 2007)
Tunnel Trackwork and Tunnel Bench - Trackwork InstallationTunnel Trackwork and Tunnel Bench - Trackwork Installation
Contractor Outreach – CQ031 (April 2007)
Tunnel Trackwork – Booted Block SystemTunnel Trackwork – Booted Block System
Contractor Outreach – CQ031 (April 2007)
Ventilation and Emergency Exit Shafts - Three TunnelsVentilation and Emergency Exit Shafts - Three Tunnels
Contractor Outreach – CQ031 (April 2007)
Ventilation and Emergency Exit Shafts - Track DVentilation and Emergency Exit Shafts - Track D
Contractor Outreach – CQ031 (April 2007)
Ventilation and Emergency Exit ShaftsVentilation and Emergency Exit Shafts
CL
Lp
1BC
L L
p1B
CL
Lp
1AC
L L
p1A
Modular Retaining Wall
CL
Tr
DC
L T
r D
Air Plenum
Upper SA Room
Fan Room
Lower SA Room
Ste
el F
ram
eS
teel
Fra
me
RC
Wal
lR
C W
all
Jet Grout Invert Plug
Track D Emergency Exit at Honeywell St. (Similar to Yard Lead Emergency Exit at 39th St.)
Contractor Outreach – CQ031 (April 2007)
Ventilation and Emergency Exit ShaftsVentilation and Emergency Exit Shafts
Yard Lead Emergency Exit & Substation at 39th Street
Contractor Outreach – CQ031 (April 2007)
Ventilation and Emergency Exit ShaftsVentilation and Emergency Exit Shafts
3939thth StreetStreet BridgeBridge
Harold Access Bridge
Harold Access Bridge
Skillman A
venue
Skillman A
venue
SubstationSubstation
Emergency ExitEmergency Exit
Yard Lead Emergency Exit and Substation at 39th Street
Contractor Outreach – CQ031 (April 2007)
Retaining Walls - Westbound Bypass and PL TrackRetaining Walls - Westbound Bypass and PL Track
Westbound Bypass Approach Structure (Rendering)
Modular Retaining Wall Section for PL Track
Contractor Outreach – CQ031 (April 2007)
Cut and Cover Approach - TBM Reception Pits - By OthersCut and Cover Approach - TBM Reception Pits - By Others
Track A TBM Reception Pit
(CH053)
Track A Approach Structure
(CH053)
Track B/CTBM Eastern Limit
Track B/C Approach Structure
(CH059)
Track DTBM Reception Pit
(CH054)
Track D Approach Structure
(CH054)Harold Access Bridge
(CH053)
Contractor Outreach – CQ031 (April 2007)
Cut and Cover ApproachCut and Cover Approach
CH054 – 48th St Main Line Bridge (Reloc. ML4 and
Temp. ML2)
Retaining Wall Retaining
Wall
Yard LeadApproach Structure
GM Access Bridge
Retaining Wall
Retaining Wall
Mainline Bridgesat 43rd Street (CH053)
Contractor Outreach – CQ031 (April 2007)
Cut and Cover Approach - Typical Approach StructureCut and Cover Approach - Typical Approach Structure
Contractor Outreach – CQ031 (April 2007)
Demolition - Private Properties on 43rd Street Demolition - Private Properties on 43rd Street
Contractor Outreach – CQ031 (April 2007)
Traction Power Substation C08 at 43rd StreetTraction Power Substation C08 at 43rd Street
Yard Lead Tunnel Approach Structure
Traction Power Substation C08 – Foundations Only
Contractor Outreach – CQ031 (April 2007)
Underpinning - Protection of Honeywell St. BridgeUnderpinning - Protection of Honeywell St. Bridge
Contractor Outreach – CQ031 (April 2007)
Underpinning - Protection of GM Access Bridge (jet grout columns)Underpinning - Protection of GM Access Bridge (jet grout columns)
Contractor Outreach – CQ031 (April 2007)
Underpinning - Yard Lead Tunnel - 43rd St Bridge Pier ModificationUnderpinning - Yard Lead Tunnel - 43rd St Bridge Pier Modification
Temp. Steel Road Plate
Mini Piles
Yard Lead
RelocatedDEP Sewer
Mini Piles
Contractor Outreach – CQ031 (April 2007)
Railroad InterfacesRailroad Interfaces
• Working Arrangements with Railroads
• Flagging Support and Force Account Support
• Working within Harold Interlocking and Sunnyside Yard
• TBM Removal next to Harold Mainline and Catenary
Contractor Outreach – CQ031 (April 2007)
Main Staging AreaMain Staging Area
500 ft
Contractor Outreach – CQ031 (April 2007)
Key Elements (1 of 2)Key Elements (1 of 2)
• Contract Construction Interfaces
– Predecessor Contracts: CQ028, CH053
– Interfaces in Harold Interlocking and Yard A with Concurrent Contracts: CH054, CM009, CM012, CM019, Force Account.
– Successor Contracts: CQ032, CH057, CS079
– Additional Design Interfaces with: CH059, CS081
• New Technology
– Pressurized Face TBMs
– Precast Booted -Block Trackwork System.
Contractor Outreach – CQ031 (April 2007)
Key Elements (2 of 2)Key Elements (2 of 2)
• Means and MethodsGenerally shown as ‘Suggested Method’ with permissible alternatives detailed in the specifications: – TBM: Pressurized Face (Slurry or EPB)
– Liner: Reinforcement designed by GEC consultant. Contractor can propose modifications to details such as left/right rings, taper, segment shape and dowels
– Ground Treatment: Jet grout or ground freezing feasible
– Ground Support for Vent Shafts: slurry walls or secant piles feasible
– Temporary Support for Yard Lead Approach Structure: Jet grout plus soldier pile and lagging suggested, slurry walls and tremie plug acceptable
– Temporary Support for Westbound Bypass. Suggested as Soldier Pile and lagging with rakers or tie-backs
– Underpinning: Various methods suggested (one per pier location)
• Instrumentation and Monitoring
• Mixed Face, Boulders and Shallow Tunneling