Snyder Industries 18800 Gallon ASTM Black Vertical Storage Tank

Washington Court House, Ohio, and the 165 inch load that leaves it

Begin with the plant, because on a tank this size the lane is a line item and not a footnote. This one is molded at Washington Court House, Ohio, which puts an Ohio Valley, Great Lakes or Northeast dock on a short haul and makes a far western pad the case to price carefully. Nothing 165 inches across rides inside a trailer; it rides on an open deck as an over-dimensional load, and the permits follow the route rather than the tank, so the access survey happens before the order and not after: the gate, the turn radius, the overhead service drop and the standing position for the crane all get walked against 13 feet 9 inches of width and 242 inches of length on the deck. Once it is on the ground the pad takes over. Plain water alone puts 156,792 pounds inside this shell and the 1.5 rating allows 235,188 pounds, and a rotationally molded floor bears on its whole floor and on nothing else, so all of that load lands on the 165 inch circle. The slab is engineered to the concrete pad sizing framework, poured level and in full contact, inside containment sized to the tank where the liquid is regulated. Twenty feet of empty black shell is a sail, so it is banded to structure or to anchors set in the slab while it is still empty, and the bands are checked after the first windy week and again at the end of the first full summer, because a black wall in the sun grows a little every day. Whether 18,800 gallons is the right pour against your draw and your delivery interval is a question for the tank sizing calculator, and the reserve and the warm-weather freeboard come out of the tank sizing guide.

The 165 inch shell four ways, and 20,000 gallons in the same footprint

The case for this one over its stablemates is the access and the empty weight. It is the black tank in the 165 inch shell listed with the 24 inch threaded, vented manway, and it is listed at 5,500 pounds empty, the heavier of the two weights the sheet gives in this shell; the lighter walls in the same footprint are listed separately and each is rated as its own sheet says. If the pad is narrower than 13 feet 9 inches, the 5380000C126 holds 16,500 gallons on a 142 inch base and goes up to 257 inches instead, trading floor for height and, on the sheet, weighing 3,000 pounds empty against this tank's 5,500.

Want us to check the fit? Send the site dimensions to 866-418-1777 or through a written quote request and we will confirm the tank, the pad and the freight.

Twenty feet two inches up to a 24 inch manway

• Access, first, because on this tank access is the hardest part of the install: the listed opening is a 24 inch threaded, vented manway at 242 inches above the pad. That is fixed platform work with a rail and a gate, or a caged ladder to a landing, and a permanent fill line landed at the manway so nobody carries a delivery hose up twenty feet. A 24 inch opening also changes what is possible from the top, because it takes a cleaning wand, a level probe, a vent line and a fill line together without crowding, where a smaller lid makes you choose.
• Outlet: the sheet gives the outlet as "1 Manway / Lid" and gives no bottom fitting size anywhere on it. We print the field as it stands rather than guess a bulkhead diameter. Name the liquid and the draw-off arrangement you need at order and we confirm what this molding accepts, in what material and with what gasket, before anything is cut.
• Lifting: four lifting lugs are molded in. They are for the lift and for nothing else, so no ladder, no pipe run and no platform ever hangs off them.
• Fill and vent: a dip tube to the floor so the incoming stream does not free-fall the height of the shell and foam, the vent piped outdoors on anything that fumes, and the vent sized to the delivery pump rather than to whichever port is nearest.
• Service limit: 120 F / 48 C. Warranty: 3 year. Rating: specific gravity 1.5 as the sheet gives it.

A lid twenty feet in the air sets the maintenance routine whether you plan it or not, so plan it. Every opening is deliberate: a light on the band of wall above the liquid line, which is the part of a tall tank that ages first, a look at the threads and the gasket seat while you are up there, the date on the log, and the cover properly threaded shut afterwards so vapour stays in and rain stays out. Because a black wall shows no level, the gauge is a sender with a readout at the ground rather than an eye at the top. Whatever ends up plumbed at the base sits on its own support off the pad with a flexible connector between the tank and hard pipe, because 242 inches of standing liquid puts real static pressure on a base fitting and rigid pipe bolted to a shell feeds every bit of thermal movement straight back into it.

What 18,800 gallons is actually for

At this volume the tank is not a day tank, it is inventory: a municipal water or wastewater plant holding most of a tanker of bulk chemical so deliveries are weekly rather than daily, an agricultural retailer with a liquid fertilizer solution that has to last the spring, a mining or industrial site far enough from a supplier that the truck schedule sets the plant schedule, and a plant consolidating four smaller tanks onto one pad to stop running a tank farm. Where a site rule or an insurer wants the liquid inside a second wall, the freeboard sizing article works out how much usable volume a contained vessel really returns, which matters more here than anywhere because 156,792 pounds of water is a lot of containment to build. Water sits far inside the 1.5 rating, but a private fire reserve is its own specification in a water-rated vessel, which the fire-water reservoir design guide sets out. Where a reuse train needs a bulk holding stage between treatment steps, the industrial water reuse tank topology article shows where a vessel this size belongs.

Class 300, four lifting lugs, and 5,500 pounds off the deck

The sheet gives class 300 and 5,500 pounds shipping weight from Washington Court House, Ohio, shipping at 165 inches by 165 inches by 242 inches. That cube, not the scale, is what prices the lane, so put the ZIP into the freight cost estimator before the requisition goes in and read the listed price as before freight. Unloading is a crane or a large forklift, straps under the body or the four lifting lugs used as they were molded to be used, never a sling through the manway, and the tank sets down on the cured pad inside its containment rather than on a staging slab it will have to be dragged off later. Then water: fill it to the manway, hold it, walk the base and the pad edge twice looking for movement at the perimeter or a weep at any fitting, then drain and dry it before the working liquid arrives. Photograph the tank full on its pad the day it is commissioned; that picture is the baseline every later inspection gets measured against. A photo of the tank on its pad, full, on day one is worth keeping; it is the baseline every later inspection is compared against.