1 brookhaven science associates ring building construction status michael p. bromfield construction...

1 BROOKHAVEN SCIENCE ASSOCIATES

Ring Building Construction Status

Michael P. BromfieldConstruction Engineer

NSLS II Conventional Facilities Advisory Committee Review November 9-10, 2009


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


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.


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)


Technical Progress

Project Site at January ’09


Technical Progress

Project Site at October ‘09


Technical Progress

Concrete Phasing Plan


Technical Progress

– Baseline Critical Path – Construction Activities thru’ November ‘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 )


Technical Progress


Vehicle Tunnel

Column Footing B-78


Technical Progress


Curbs & Sidewalk in

Progress


Technical Progress

Underground Utilities

Domestic Water Main Installation

Electrical Ductbank Installation


Technical Progress

Some Challenges Faced

Geo-Thermal ExperimentWater Main Relocation for New Steam Line


Technical Progress


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


Technical Progress

9/9/09

Meeting with. Testing Agency to Review Concrete Sampling & Testing

procedures

4000 psi


Schedule Status

Concrete Cylinder Break Test Results


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.


Schedule Status

Underground Utility Plan C – 600• Substantial Utility Installation• Extensive coordination


Schedule Status

Intermediate Project Milestones thru’ March 2010


Schedule Status

Mandatory Project Milestone Report


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


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


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

1 brookhaven science associates ring building construction status michael p. bromfield construction...

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