Waldorf Water Tower #6 – 2 MG Composite Elevated Water Storage Tank

Key Accomplishments

Johnston Construction Company

• Johnston Construction Company served as the prime contractor for the design and construction of Waldorf Water Tower #6 for Charles County Government.
• The project provided a new two-million-gallon composite water tower to support increasing water-system demands within Waldorf’s Development District.
• Constructed the two-million-gallon composite tank, including its reinforced-concrete support structure, steel water-storage bowl, foundation, access systems, piping, and operating equipment.
• Coordinated surveying, stakeout, geotechnical investigation, soil borings, structural design, permitting, material submittals, and construction documents.
• Constructed the offsite water-main and access-road improvements connecting the new facility to the County’s water-distribution system and public roadway network.
• Performed clearing and grubbing, excavation, shoring, backfilling, compaction, unsuitable-material removal, and placement of select fill and aggregate where required.
• Installed erosion and sediment controls and maintained the measures throughout construction in accordance with Maryland and Charles County requirements.
• Coordinated utility relocations and new utility services required for operation of the water tower and associated site facilities.
• Installed the electrical service, distribution equipment, underground ductbanks, conduit, wiring, grounding, lighting, and equipment connections.
• Coordinated tank instrumentation, level monitoring, alarms, communications, programmable controls, and integration with Charles County’s existing SCADA system.
• Coordinated the County-approved system integrator for RTU hardware, software, programming, engineering, testing, installation, and controls integration.
• Provided traffic-control planning and temporary traffic-control devices while maintaining access for residents, emergency services, deliveries, utilities, and normal roadway use.
• Restored disturbed roadways and site areas through paving, milling and overlay, curb and gutter work, topsoil placement, seeding, mulching, fertilizing, and final stabilization.
• Prepared record drawings, testing records, O&M manuals, training information, warranties, closeout documentation, and final project records.

Concrete Services Division

• Concrete Services Division, LLC performed the concrete forming, placement, finishing, and curing work associated with Waldorf Water Tower #6.
• Performed concrete work for the two-million-gallon composite water tower foundation, tank slab, splash pad, pipe supports, and elevated-tank floor.
• Coordinated placement of approximately 345 cubic yards of concrete for the tank foundation and associated concrete structures.
• Installed and stripped approximately 1,390 square feet of curved-wall formwork for the composite tank foundation.
• Installed approximately 126 square feet of slab-on-grade formwork for the tank slab and related concrete improvements.
• Placed approximately 269 cubic yards of concrete for the curved foundation walls.
• Placed approximately 75 cubic yards of slab-on-grade concrete for the tank slab and associated flatwork.
• Floated and screeded approximately 2,012 square feet of concrete surfaces.
• Performed pointing and patching of approximately 1,390 square feet of formed concrete surfaces.
• Furnished and installed concrete accessories including premolded joint material, waterstops, caulking, and related components.
• Installed approximately 54 dowels and constructed six concrete pipe-support pads.
• Coordinated reinforcing-steel placement, unloading of reinforcing materials, anchor-bolt setting, embedded items, concrete deliveries, pumping services, and testing activities with Johnston Construction Company.
• Provided concrete boom-truck support and coordinated equipment needed for concrete placement and material handling.
• Performed winter-protection labor and coordinated the placement of blankets and heaters furnished by JCC when required.

Electrical Services Division

• Electrical Services Division performed the electrical construction associated with Waldorf Water Tower #6.
• Furnished and installed the electrical service, distribution panelboard, surge-protection device, conduit, conductors, boxes, devices, and equipment connections required for the new water tower.
• Installed interior, exterior, site, and tank lighting together with switches, receptacles, associated controls, and branch-circuit wiring.
• Furnished and installed the grounding ring serving the composite water tower and associated electrical systems.
• Furnished and installed heat tracing for two piping lines associated with the elevated-tank systems.
• Installed the telemetry control panel and coordinated the antenna installation extending to the top of the water tower.
• Installed electrical raceways, conductors, and connections serving the telemetry, instrumentation, tank equipment, lighting, and other systems included in ESD’s scope.
• Coordinated electrical work with the composite tank foundation, tank erection, ladders, handrails, piping, mechanical equipment, instrumentation, controls, and site-development work.
• Coordinated equipment and materials furnished by Johnston Construction Company, the tank contractor, controls representatives, utility providers, and other project trades.
• Supported inspection, testing, startup, and operating-personnel instruction for the electrical systems within ESD’s contractual responsibility.
• Electrical Services Division performed the electrical construction for Waldorf Water Tower #6 in Charles County, Maryland.
• The overall project includes the design and construction of a new two-million-gallon composite water tower intended to support increasing water-system demands within Waldorf’s Development District. Johnston Construction Company serves as the prime contractor for the County Commissioners of Charles County, Maryland.
• The project includes the composite water tower, reinforced-concrete support structure, foundation, onsite and offsite improvements, water-main connections, access roads, stormwater facilities, electrical systems, instrumentation, SCADA integration, testing, and final restoration.
• ESD furnished the labor, materials, tools, equipment, supervision, and supplies necessary to perform the electrical work shown in Division 16, Electrical Drawings 1 through 4, Addenda Nos. 1 through 9, and the applicable tank-foundation documents.