T BAILEY LLC builds field erected tanks for water, fuel, and oil storage projects where the finished tank is too large to ship in one piece. We fabricate and coat the steel at our Anacortes, Washington facility, then send our own crews to the job site to assemble the tank where it will spend its working life.
Field erection is how the largest storage tanks get built, and it rewards a contractor who can carry every phase without handing work to outside vendors. We self-perform fabrication, surface preparation, coatings, quality control, and on-site construction, so a single accountable team takes your project from raw plate to a commissioned tank.
For decades, our field erected storage tanks have served municipalities, military installations, refineries, ports, and private developers across the Pacific Northwest, Alaska, and Hawaii.
What Field Erected Tank Construction Involves
A field erected tank is fabricated in sections at a shop, shipped to the project site, and welded together in place. The approach exists because of a hard transport limit. A shop-built tank tops out at roughly a 12-foot diameter, the widest load a standard highway trailer can carry, which corresponds to capacities up to about 50,000 gallons. Anything larger has to be assembled where it stands.
Field erected tank construction methods start with the same precision fabrication as shop work. Plate is cut, rolled, and prepped under controlled conditions, then staged for shipment as shell courses, roof sections, and accessories. New field erected tank construction then shifts to the site, where certified field welders build the tank course by course. The result is a vessel of nearly any practical size, built to the same code requirements as its shop-built counterpart.
Codes, Standards, and Applications
Our field fabricated tanks fall into two families that cover most of the market.
- AWWA D100 water storage. We have a long record of building large welded steel reservoirs and standpipes for municipalities, private developers, and water treatment facilities, including structures well over 100 feet tall and reservoirs holding millions of gallons.
- API 650 fuel and oil storage. We have constructed API 650 tank farms for military installations, refineries, seaports, and energy facilities, including tanks 120 feet in diameter, along with UL 142 vessels where the project calls for them.
Field erected storage tanks in fuel service are also subject to federal oversight, and we build to the requirements that apply, including the EPA’s regulations for field-constructed tanks. For upright tanks that fit within shop-transportable dimensions, our vertical storage tanks page covers that side of our work. Between the two services, we can match the build method to the capacity your project actually needs.
Fabrication and Field Erected Steel Tank Capabilities
Field erected steel tanks demand fabrication equipment sized for heavy plate, and our 120,000-square-foot facility was built for exactly that. Our plate rollers cold-form steel up to 10 feet wide and 2.75 inches thick, our CNC plasma and water-table cutting machines hold tight dimensional tolerances on shell and roof plate, and 20-ton overhead bridge cranes move sections through the shop without bottlenecks.
That capacity matters on a field-erected job because every course that arrives on site dimensionally correct is a course your schedule never waits on. Our full range of steel fabrication services also covers nozzles, stairways, ladders, platforms, and other tank accessories.



