Post Oak Middle School 150,000-Gallon Elevated Water Storage Tank

Key Accomplishments

Johnston Construction Company

• The project included site preparation, erosion and sediment controls, excavation, reinforced-concrete foundation construction, underground water piping, electrical systems, instrumentation, controls, and final site restoration.
• JCC coordinated the tank foundation, anchor assemblies, embedded components, underground piping, electrical pathways, and site access with the tank manufacturer’s structural and erection requirements.
• New water piping, valves, fittings, restraints, supports, connections, and appurtenances were installed to connect the elevated tank to the existing water system.
• JCC completed electrical-distribution work supporting tank lighting, heat tracing, grounding, lightning-protection interfaces, instrumentation, communication systems, and SCADA monitoring.
• The completed water-storage system was pressure-tested, cleaned, disinfected, sampled, inspected, and prepared for operation.
• Construction was performed on an active public-school property while maintaining safe access and protecting existing utilities, structures, students, staff, and surrounding facilities.
• Johnston Construction Company performed the supporting construction work for the Post Oak Middle School Elevated Water Storage Tank project in Spotsylvania County, Virginia.
• The project provided a new 150,000-gallon spheroid elevated water-storage tank serving Spotsylvania County Public Schools.
• The project specifications identify Spotsylvania County Public Schools as the Owner and Timmons Group as the Engineer. The overall project included construction of the elevated tank, piping, foundation, site work, access provisions, and associated appurtenances.
• Johnston Construction Company performed its work under a subcontract dated July 22, 2021.
• Marty Workinger signed the agreement on behalf of JCC, while Jeremy Binkley signed as the Contractor’s representative.
• The contract documents reference Phoenix plans and the contractor’s project manager, supporting the identification of Phoenix Fabricators & Erectors, LLC as the Contractor for the job.

Concrete Services Division

• Concrete Services Division, LLC performed the concrete construction supporting the new 150,000-gallon elevated water-storage tank at Post Oak Middle School.
• CSD formed and placed the reinforced-concrete tank foundation in coordination with the Phoenix foundation drawings and the tank manufacturer’s structural requirements.
• The work included the concrete walkway, splash block, pipe supports, and outlet structure associated with the elevated tank site.
• CSD completed footing, slab-on-grade, and straight-wall formwork, together with concrete placement, floating, screeding, troweling, finishing, curing, and point-and-patch work.
• The company placed approximately 42 cubic yards of concrete and coordinated concrete deliveries, pumping services, and testing furnished or paid for by JCC.
• CSD placed approximately 1.91 tons of reinforcing steel and installed welded-wire mesh within the assigned concrete work.
• The scope included three pipe-support pads and installation of 11 pile uplift connectors supplied by others.
• CSD coordinated its work with JCC’s excavation, subgrade preparation, equipment support, concrete procurement, tank construction, piping, and overall project schedule.
• Concrete Services Division, LLC performed the concrete portion of the Post Oak Middle School Elevated Water Storage Tank project in Spotsylvania, Virginia.
• The overall project provided a new 150,000-gallon spheroid elevated water-storage tank for Spotsylvania County Public Schools.
• Timmons Group served as the Engineer. Johnston Construction Company performed its work under the tank-project subcontract and retained CSD to complete the assigned concrete construction.
• The subcontract required CSD to furnish the labor, materials, tools, supplies, and supervision necessary for forming and placing the tank foundation, concrete walkway, splash block, pipe supports, and outlet structure.
• The work was governed by the project contract documents, Drawings 1 through 13, the cast-in-place concrete requirements, the CSD control estimate, and the Phoenix foundation drawings.
• CSD mobilized its concrete tools, formwork materials, lumber, reinforcing-steel placement supplies, finishing tools, curing supplies, and related equipment to the project site.

Electrical Services Division

• Electrical Services Division, LLC performed the electrical construction supporting the new 150,000-gallon Post Oak Middle School elevated water-storage tank.
• ESD furnished and installed electrical conduit, conductors, boxes, devices, switches, receptacles, and equipment connections throughout the tank site.
• The work included a new electrical service, panelboard, and surge-protection device serving the elevated tank systems.
• ESD installed the tank-lighting system, lighting inverter, switches, and associated wiring required for safe operation, inspection, and maintenance.
• A complete lightning-protection system was furnished and installed for the elevated steel tank.
• ESD excavated and installed the underground electrical duct bank between the water tank and the existing well building.
• The project included six-inch conduits reserved for future telecommunications cabling.
• ESD coordinated electrical connections for equipment furnished by others, including the tank mixer, heater, and heat-tracing equipment.
• The electrical installation was inspected, tested, started, documented, and incorporated into the final as-built record drawings.
• Electrical Services Division, LLC performed the electrical portion of the Post Oak Middle School Elevated Water Storage Tank project in Spotsylvania, Virginia.
• The overall project provided a new 150,000-gallon spheroid elevated water-storage tank for Spotsylvania County Public Schools.
• Timmons Group served as the Engineer. Johnston Construction Company performed the supporting construction work and retained ESD to complete the assigned electrical systems.
• The subcontract required ESD to furnish the labor, materials, tools, equipment, supervision, and supporting services necessary to complete the electrical work for the Spotsylvania elevated water-storage tank.
• The work was governed by Division 26 of the project specifications, Electrical Drawings E-1.1, E-2.1, and E-2.2, Addendum No. 1, ESD’s June 21, 2021 proposal, and the ESD control estimate.