LocationDover, Delaware 19901
MarketWater Storage and Tanks
AUGER-CAST PILE FOUNDATION, REINFORCED CONCRETE CONSTRUCTION, 16-INCH WATER DISTRIBUTION PIPING, CONTROL ROOM, ELECTRICAL & SCADA SYSTEMS, HVAC INSTALLATION & SITE DEVELOPMENT.
Johnston Construction Company
- Johnston Construction Company served as Civil Subcontractor to Chicago Bridge & Iron (CB&I) for the construction of foundations and supporting infrastructure associated with a 1.5-million-gallon composite elevated water storage tank at Garrison Oak Technical Park in Dover, Delaware.
- JCC's contracted foundation responsibilities included providing an auger-cast pile foundation system designed to support the elevated water storage tank, including coordination of specialized piling operations, pile installation documentation, load testing, and grout-strength testing.
- Performed foundation-related excavation, site preparation, structural backfilling, and compaction activities in accordance with CB&I's engineering requirements and the project's geotechnical specifications.
- Furnished and installed concrete flooring within the base of the elevated tank structure, together with associated concrete construction and installation of CB&I-supplied structural anchorage components.
- Installed 16-inch ductile iron water distribution piping, including associated valves, hydrants, fittings, thrust blocks, and connections required to integrate the elevated storage tank with the municipal water distribution system.
Concrete Services Division
- Concrete Services Division, LLC (CSD) served as Trade Subcontractor to Johnston Construction Company for specialized concrete foundation construction associated with a 1.5-million-gallon composite elevated water storage tank at Garrison Oak Technical Park in Dover, Delaware.
- Performed concrete forming operations for the elevated tank foundation, including footings, slabs-on-grade, and curved foundation walls designed to accommodate the circular configuration of the composite elevated tank structure.
- CSD's contracted work included approximately 1,361 square feet of curved foundation wall formwork, incorporating form installation, alignment, bracing, and subsequent removal.
- Provided concrete placement services for approximately 255 cubic yards of foundation concrete, including an estimated 216 cubic yards associated with the foundation wall and approximately 39 cubic yards associated with footings and slabs-on-grade.
- Undertook reinforcing steel placement activities, including reinforcement handling, placement labor, and coordination with the foundation's specified structural reinforcement requirements.
Electrical Services Division
- Electrical Services Division, LLC (ESD) served as Trade Subcontractor to Johnston Construction Company for the electrical construction associated with the 1.5-million-gallon Garrison Oak Composite Elevated Water Storage Tank in Dover, Delaware.
- ESD's contracted scope included furnishing and installing a 100-amp electrical service, providing the power infrastructure required for the elevated water storage tank facility and its associated operating equipment.
- Furnished and installed Panelboard LP, incorporating circuit protection, electrical distribution equipment, and associated connections supporting the facility's power requirements.
- Undertook conduit and electrical wiring installations, with the subcontract identifying approximately 1,630 linear feet of conduit and 6,850 linear feet of wiring in the contracted estimate.
- Installed facility lighting infrastructure, including specified lighting fixtures, switches, receptacles, electrical boxes, and associated wiring devices.