Old Town Utility Corridor (12kV)
Old Town Utility Corridor (12kV)
LAWRENCE BERKELEY NATIONAL LABORATORY
Project Value: $5 Million
Scope
Install new 12 kV ductbank and utility corridor for future development. Relocate utilities including main gas line and main compressed air line. Reroute and install new storm drain line.
- Demolition
- New Retaining Wall Construction
- Underground Utilities
- Site Restoration
- Grading
- Paving
- Masonry
- Mechanical Piping
Challenge
Existing underground utilities locations and the existing main gas line were not shown in design drawings. Compressed air line cut-over and relocation had not been studied and designed based on the limitations of research buildings and other laboratories during the design process. Most of the underground utilities were an unforeseen obstruction during the construction. The project next to the Advance Light Source building could not disturb research by producing any vibration in the vicinity.
Solution
We redesigned the main gas line and compressed air line relocation to comply with the research and laboratory operations. Because of the Advance Light Source vibration restriction, we completed excavation with nomadic hammer and demolition of the reinforced concrete structure with a concrete processor as a precaution when moving the heavy equipment. We also coordinated with the client to use a jackhammer for demolition/excavation, jumper jack and vibratory roller for backfilling and paving during the ALS maintenance shutdown window.
Project Success
Provided safe and efficient service to a facility that has very unique needs so its research could continue uninterrupted.
Bay View Site Access Improvement
Bay View Site Access Improvement
LAWRENCE BERKELEY NATIONAL LABORATORY
Project Value: $5 Million
Scope
Demolish existing reinforced concrete structure to provide the real estate for new building construction, relocate existing compressed air line, install new fire and domestic water lines, install soldier pile with several rows of tie-backs, install new reinforced concrete retaining walls and new stair structures.
- Demolition
- Soil Disposal
- Site Restoration
- Relocation of Underground Utilities
- Grading
- Paving
- New Retaining Wall Construction
- Underground
Challenge
The underground compressed air line was in a challenging location and a Bay Area Quality Management District Permit and Soil Disposal Profile was not covered in the design drawings.
Solution
We prioritized the project activities and stockpiled the soil for testing to accommodate and achieve the project schedule.
Project Success
We prevented a more than six month delay to the project schedule and new building construction started as planned.