Markets Served / Project Experience

Waugh Chapel 2-Million-Gallon Elevated Water Storage Tank – Foundation & Infrastructure Construction

Gambrills, Maryland 21054

LocationGambrills, Maryland 21054
MarketWater Storage and Tanks

Contract

$1,299,470

Team Members

Owner
Anne Arundel County Department of Public Works
Engineer
O'Brien & Gere
Prime Contractor
Chicago Bridge & Iron (CB&I)
Civil Subcontractor
Johnston Construction Company

Key Accomplishments

  • Provided construction surveying, site layout, clearing, grading, erosion and sediment control measures, fencing, paving, and associated site development activities required for the new water storage facility.
  • Coordinated pile-load testing, grout-strength testing, soil inspections, pile installation records, and geotechnical documentation associated with the engineered foundation system.
  • Furnished and installed the concrete floor within the base of the elevated tank structure, along with concrete mow strips and other concrete improvements included in JCC's subcontract.
  • Installed underground water piping, valves, fittings, supports, and thrust blocks associated with the facility's 16-inch water-main connections, including piping extending to the tank expansion joints furnished by CB&I.
  • JCC's scope included furnishing the complete Altitude Valve Room, incorporating specified 16-inch gate valves, pressure-reducing equipment, an altitude/flow-control valve, mechanical piping, and associated operating equipment.
  • Provided overflow and drainage infrastructure, including piping extending from a 16-inch Tideflex check valve to the exterior discharge location, overflow riprap, and associated floor-drain piping.
  • Performed mechanical construction involving process piping, valve installations, piping supports, equipment connections, and associated components required for the water storage facility.
  • Undertook the contracted electrical and instrumentation scope, including electrical distribution, lighting, grounding, wiring, process-control equipment, instrumentation, and communication infrastructure associated with the elevated tank facility.
  • Coordinated piping disinfection, required pressure and leakage testing, construction documentation, and preparation of record drawings, warranties, and operation and maintenance manuals.
  • The Project Was Completed On December 31, 2016.

Project Description

Johnston Construction Company served as Civil Subcontractor to Chicago Bridge & Iron (CB&I) for the construction of a new 2-million-gallon elevated water storage tank facility in Anne Arundel County, Maryland, providing foundation construction, site development, underground utilities, mechanical systems, electrical infrastructure, and instrumentation.

JCC's foundation responsibilities included construction of an augered cast-in-place pile foundation designed to support the substantial structural loads associated with the elevated water storage tank, including foundation preparation, pile installation, concrete construction, and associated structural connections.

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