LocationManassas, Virginia
MarketIndustrial and Environmental
GROUND IMPROVEMENT, EARTHWORK AND REINFORCED CONCRETE TANK FOUNDATION.
Johnston Construction Company
- Performed ground improvement, earthwork and reinforced concrete foundation construction for a new 1,000,000-gallon liquid nitrogen (LIN) storage tank.
- Provided surveying and layout necessary to establish project reference points, lines, grades and foundation controls.
- Managed ground-improvement activities including engineering/design coordination, layout and oversight of aggregate pier installation.
- Coordinated installation of aggregate piers extending through controlled fill into underlying disintegrated rock to achieve required foundation bearing performance.
- Performed foundation excavation, dewatering, fill placement, backfill and grading associated with the LIN tank foundation.
Concrete Services Division
- Performed specialized concrete construction for the new 1,000,000-gallon liquid nitrogen storage tank foundation.
- Furnished labor, form materials, lumber, tools and concrete-related equipment required for CSD’s scope.
- Installed and stripped formwork for slabs, columns and supported slabs.
- Placed approximately 625 cubic yards of concrete across slab-on-grade, column and supported-slab foundation components.
- Finished concrete surfaces through screeding, troweling, pointing and patching.