304 Aggregate Base for Ohio Drives, Lanes and Pole Barn Pads

The date you can start matters more than most people expect. Frozen or saturated glacial till will not compact, so a layer rolled into wet clay in early March tends to go soft by the time the grass needs its first cut. Wait until the ground has thawed and drained and 304 aggregate base spreads, rolls and locks into a course that carries a loaded truck through the next run of freeze-thaw. On the flat lake plain in the northwest that wait runs weeks longer than it does on a sand and gravel knoll east of Cleveland, and planning the delivery around it saves redoing the work.

Ohio suppliers and contractors mostly call this material 304 limestone. ODOT specifies it as Item 304, the aggregate base course that goes under drives, pads and pavement. The item number describes how the material is written into a spec in this state, not a certification held here.

304 aggregate base against 411 stone and clean #57

Three materials get ordered for the same job, and only one of them is a base course.

The binding fines decide it. In 304 limestone the fines fill the gaps between the larger pieces as the roller passes, which is what turns loose stone into a slab that spreads weight. Clean stone has no fines, so it stays loose and shifts under a tire no matter how many passes you make. If the layer you are building has to hold a load, order the graded material and top it afterwards with 411 stone. If the layer has to move water away from something, the clean #57 limestone is the right call and the base course is not.

A pole barn pad is its job; a dry creek bed and a fire pit ring are not

An equipment pad, a farm lane, a parking apron or a turnaround all ask for the same thing: a compacted layer that stops the subgrade from pumping up through the surface. That is where this material earns its keep, and it is the reason a lane that carries a grain cart gets a thicker course than one that carries a car.

Two common yard projects look like base work and are not. A dry creek bed built as a runoff channel wants water passing through it, so a graded mix with fines is the wrong choice; rounded river rock over a clean stone bottom reads better and drains better. A fire pit surround takes boots, chairs and hose water, and the fines in a base course wash out of a thin layer and track indoors. Screenings compacted into a firm ring, or pea gravel where a looser feel suits, holds up better around a fire.

Depth over Ohio clay, and why 32 inches of frost still matters at 6 inches of stone

Frost reaches roughly 32 inches through much of the state and about 36 inches in parts of northern Ohio, which is deeper than any driveway base is ever going to be built. You are not getting below the frost line, so the work goes into keeping the layer dry. Water trapped in the clay under a thin course freezes, lifts the surface, thaws and leaves the hollow that becomes next year's pothole.

A car drive over reasonable ground is usually planned at 4 inches of compacted base. A lane or pad taking a loaded truck, a trailer or a tractor is planned deeper, commonly 6 inches or more, and on the soft flats of the lake plain the honest answer is often to fix the drainage and build the grade up with fill dirt before any stone goes down. Place the material in lifts rather than one deep dump, wet it lightly if it is dusty, and roll each lift before the next one goes on. A plate compactor handles a walk or small pad; a drive or lane wants a roller.

Working out the yards for a 30 by 40 pole barn pad

Take a hypothetical equipment pad, 30 feet by 40 feet, planned at 6 inches of compacted base.

• Area: 30 x 40 = 1,200 square feet
• Depth: 6 inches = 0.5 feet
• Volume: 1,200 x 0.5 = 600 cubic feet
• Cubic yards: 600 / 27 = 22.2 cubic yards

Add a little for the spread you lose at the edges and for the settlement that compaction takes out, and 23 cubic yards is a sensible order for that pad. Tonnage depends on the density figure the site applies to this material, so put the same three numbers into the 304 base calculator and let it convert the yards to tons for you.

A second hypothetical, a 10 foot by 120 foot section of farm lane at 4 inches, works the same way: 10 x 120 = 1,200 square feet, 1,200 x 0.333 = 400 cubic feet, 400 / 27 = 14.8 cubic yards. Same footprint, two thirds of the depth, two thirds of the material. In tons, using the weight this site publishes for crusher run and road base, about 3,000 lb per cubic yard or 1.50 tons per yard, the pad's 22.2 yards is approximately 33 tons and the lane's 14.8 yards approximately 22 tons.

Getting a load onto the pad once the lane firms up

Delivery is arranged at checkout once you enter the ZIP code for the site, and you pick the quantity and the date on this page. The truck needs a clear run to the dump spot and room to raise a bed, so move trailers, low branches and parked cars before the day, and mark the drop with a stake if the pile has to land somewhere other than the obvious spot. On a wet spring week it is worth walking the lane yourself first; soft ground that will not carry your own truck will not carry a loaded one either.

Set your measurements against the calculator, then pick a quantity and a delivery date above. If the ground has you second-guessing the depth, send the dimensions through the contact page and Ohio Rock Supply can work the numbers with you.