LocationGaithersburg, Montgomery County, Maryland
MarketWater Storage and Tanks
CIVIL AND MECHANICAL CONSTRUCTION FOR 3.0 MG ELEVATED WATER STORAGE TANK.
Johnston Construction Company
- Performed the civil and mechanical construction package supporting the replacement of the existing Shady Grove Standpipe with a new elevated water storage facility.
- Completed required site layout and surveying, construction coordination, erosion and sediment controls, tree removal/protection, traffic coordination, clearing, grading and general site preparation.
- Constructed the new tank's deep H-pile foundation system, with the subcontract based on approximately 142 H-piles totaling an estimated 8,520 linear feet, together with required pile installation coordination and foundation preparation.
- Supported foundation quality verification through static pile load testing, PDA testing, concrete testing, soil testing and subgrade bearing inspection, including preparation of required reports.
- Constructed the communications tower foundation, consisting of three approximately 60-inch-diameter caissons based on a design depth of 34 feet, and completed associated civil work and foundation testing. Tower fabrication, erection and associated cable work were by others.
Concrete Services Division
- Served as the concrete trade subcontractor to Johnston Construction Company for the Shady Grove Standpipe Replacement project.
- Furnished the labor, tools, supervision, forming systems and concrete-placement services required for CSD's structural concrete scope.
- Performed concrete forming and placement associated with the new elevated water-storage tank's foundation system.
- Formed and placed concrete for the tank foundation, supporting the construction of the new 3.0-million-gallon elevated water storage facility.
- Performed concrete work for the derrick slab and tank slab associated with the elevated tank structure.