1 brookhaven science associates ring building construction status michael p. bromfield construction...
TRANSCRIPT
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1 BROOKHAVEN SCIENCE ASSOCIATES
Ring Building Construction Status
Michael P. BromfieldConstruction Engineer
NSLS II Conventional Facilities Advisory Committee Review November 9-10, 2009
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2 BROOKHAVEN SCIENCE ASSOCIATES
Outline
• Introduction • Technical Progress• Cost Overview
– Budgeted value, – Contract value, – Approved changes to date– Estimate of Potential Changes – EAC
• Schedule Status• Issues & Risks• Look Ahead• Conclusions
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Introduction
Construction Inspection Team (CIT) - Responsible to:
• Inspect work of the contractor to verify conformance of installed work with contract plans and specifications.
• Coordinate work of BNL support groups with contractor to assure that all required permits are in place prior to commencement of work.
• Assure that contractors perform work in accordance with applicable work controls requirements.
• Coordinate with the NSLS-II CSEs to assure that work progresses in accordance with the contract ESH requirements.
• Review contractor payment requests to verify completed quantities.
• Confirm testing proceeds with contract plans and specifications.
• Timely Response to Contractor(s) Requests• Follow-up on Compliance Notices to Ensure Matter Satisfactorily Resolved.
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Overview
• Scope (WBS 1.05.03.02)• Construction of the Ring Building, Service Buildings• Installation of Utility Mains to Ring Building, including
– Primary Electric– Connection to Central Chilled Water & Compressed Air Mains– Installation of Water Loop
• On Site Infrastructure Improvements – Roads, Parking, Storm & Sanitary Systems
• Cost• Contract amount = $172.6M
• Initial Baseline = $167M (CD- 3)
• Pre-bid estimate = $194M (Sept 08)
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Technical Progress
Project Site at January ’09
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6 BROOKHAVEN SCIENCE ASSOCIATES
Technical Progress
Project Site at October ‘09
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Technical Progress
Concrete Phasing Plan
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Technical Progress
– Baseline Critical Path – Construction Activities thru’ November ‘09
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Project Site at October ‘09
Technical Progress
Ratchet Wall #25B (Col Ln. 3)
Ratchet Wall 27A (Col Ln. 3)
Ratchet Wall #22A (Col Ln. 103 )
Ratchet Wall #21A (Col Ln. 103 )
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Technical Progress
Project Site at October ‘09
Vehicle Tunnel
Column Footing B-78
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Technical Progress
Project Site at October ‘09
Curbs & Sidewalk in
Progress
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Technical Progress
Underground Utilities
Domestic Water Main Installation
Electrical Ductbank Installation
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Technical Progress
Some Challenges Faced
Geo-Thermal ExperimentWater Main Relocation for New Steam Line
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Technical Progress
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Technical Progress
Ring Building Project: CF Inspection Responsibility Matrix
DIVISION 2 - SITE WORKSPEC.
SECTIONTORCON S/C BNL BNL VENDOR BNL PROCEDURE
SITE EXCAVATION AND ROUGH GRADING INSPECTION 02210 LT-CF-05-001
COMPACTION DENSITY TEST 02210 MT GROUP LT-CF-05-002
MOISTURE DENSITY TEST 02221 MT GROUP LT-CF-05-002
TOP SOIL FINISHED GRADING INSPECTION 02260 LT-CF-05-001
EXFILTRATION TEST ON STORM DRAINAGE SYSTEM 02463 VOLLERS LT-CF-05-001
TESTING OF HIGH PRESSURE STEAM SYSTEM 02490 SIMS LT-CF-05-001
DENSITY TESTS ON PAVING SUB GRADE 02513 VOLLERS LT-CF-05-001
TEST COMPLETED WATER MAINS FOR LEAKAGE 02665 VOLLERS LT-CF-05-001
INSPECT U/G CHILLED WATER SYSTEM BEFORE BACKFILLING 02676 SIMS LT-CF-05-001
PRESSURE TESTING OF EXTERIOR COMPRESSED AIR SYSTEM 02678 SIMS LT-CF-05-001
LEAKAGE TEST OF SANITARY SEWERS 02732 VOLLERS LT-CF-05-001
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Technical Progress
9/9/09
Meeting with. Testing Agency to Review Concrete Sampling & Testing
procedures
4000 psi
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Schedule Status
Concrete Cylinder Break Test Results
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Schedule Status
• Overall Project Status– 16% complete (per cost basis)– Concrete Work on Schedule, recovered rain impacts in June &
September– Underground Utility Work lagging due to Coordination Effort
(required to resolve interferences See Drawing)– Fabrication of Structural Steel slightly behind early finish
projections, but ahead of baseline.
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Schedule Status
Underground Utility Plan C – 600• Substantial Utility Installation• Extensive coordination
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Schedule Status
Intermediate Project Milestones thru’ March 2010
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Schedule Status
Mandatory Project Milestone Report
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Issues & Risks
• Potential Problems• Winter Concrete Work
– Winter Mix Design, Placement & Protection Plan
• Utility Installation in Inner Courtyard– Resolve Interferences (all resolved to date)– Coordination / Staging of Trades for Utility Work
• Potential for Construction Outpacing Design by ASD & XFD Groups
– Could necessitate revision to installed work
• Coordination between LOB & Ring Building Contractors
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Look Ahead
• Place Storage Ring Tunnel Floor Slab at Utility & Vehicle Tunnels
– Allows backfill & continuity of Ring Storage Tunnel construction
• Construction of Underground Electric ductbanks• Installation of Steam Main to Project Site• Construct Selected Roadways & Parking Areas
– Control site drainage,– Facilitates better soil erosion control
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Conclusion
• Continue to encourage pace of construction• At a safe rate
• Continue diligence of Inspections• Advance Construction Operations with an eye to Minimizing
Risks and Mitigating delays