Should I order material by the ton or by the yard?

Both work, and the choice comes down to how you measured the job. A ton is a weight, and a yard is a volume, so the two do not convert at a fixed rate across materials. If you worked out a volume, order by the yard. If your plan lists weight, order by the ton. The calculator handles the sizing either way.

Which stone is best for drainage in Chester County?

Clean stone, meaning washed crushed stone with no fines. In Chester County that usually means 2B stone. Because no fines are mixed in, water moves through the voids instead of pooling. Use it for French drains, wall backfill and wet drive bases.

What do I need to have ready for a bulk delivery?

Have the drop spot cleared and reachable by a dump truck, with room for the truck to enter and leave. Mark anything you do not want driven over, such as septic covers, irrigation heads and low wires. If you are placing the pile on a driveway or lawn, put down a tarp first. Then pick your delivery date at checkout.

Chester County, PA Aggregate and Rock Delivery

Pennsylvania Rock Supply handles gravel, stone and aggregate delivery in Chester County, PA, and the material buyers here ask for first is 2A modified. It is the standard Pennsylvania base stone, crushed stone with the fines left in so it compacts hard. Chester County sits on mixed Piedmont ground, with loamy upland soils and limestone valleys that weather to heavy clay.

You order online, pick a quantity by the ton or the yard, and a dump truck delivers to your site. The rest of this guide covers what to order and why.

Materials Delivered in Chester County

Start with 2A modified, also called modified stone. It is crushed stone with the fines left in, and it compacts hard under a plate or roller. Local yards still say 2B for #57 and 1B for #8. 2A modified is the trade name for a 2A-type base with extra fines added.

Order 2A Modified for driveways, parking pads, and shed or patio bases. It is the material that carries the load on most Chester County jobs.

For soil and finish work, Top Soil is screened to take out stones and roots, and it goes down at final grading and bed prep. Fill Dirt raises grade and backfills low spots before a base or topsoil goes on. Mason Sand covers brick and block mortar and paver joints.

Choosing the Right Material

Pick by what the ground has to do. A drive that carries vehicles needs a compacted 2A modified base with Driveway Gravel on top. A wet spot or a wall that holds back soil needs clean stone, so 2B or #57 lets water move instead of trapping it.

Bedding and joint work want the fine end: screenings under pavers and flagstone, Washed Sand for leveling and bedding under slabs. Decorative beds take River Rock or 3/8" Natural Pea Gravel, which stays loose underfoot because it is rounded rather than crushed.

Next door, the ground shifts what works. Lancaster County and Montgomery County share Chester County's Southeastern Piedmont and Delaware River lowland zone, so the ground is similar and the same base and drainage choices carry over. Berks County spans more than one zone, reaching into the Great Valley and Ridge and Valley and the anthracite coal region, so base and drainage decisions there can differ from what you would order here.

Ground Conditions Across Chester County

A thin base shows its weakness after a wet winter. Water sits in the subgrade, the stone moves under tires, and ruts open up. The answer is a thicker compacted base and a drainage layer that gives water somewhere to go.

Chester County ground is mixed. Uplands hold loamy soils weathered from schist and gneiss, lowlands hold red shale and sandstone, and limestone valleys weather to heavy clay. A narrow strip along the Delaware River is loose sand and gravel instead of rock. Clay holds water, so those lots need clean stone drainage. Over limestone, runoff concentrated from roofs, gutters and drives can open sinkholes.

Heavy summer storms and spring rain run off built-up ground and are managed under municipal stormwater rules. That runoff scours stream banks and washes out ditches, culvert outlets and sloped gravel drives, which is where rip rap earns its place.

Winters bring repeated freeze-thaw cycles, so a thin or poorly drained base can heave and break up, even though frost does not reach as deep here as in most of the state. Frost depth runs about 30 to 36 inches and is set by each municipality, with the City of Philadelphia using 30 inches. Base, driveway and paver work runs from spring, once the ground has thawed and dried, into late fall. Base stone should not go down on frozen, soft or muddy ground.

Delivery Across Chester County

You choose between tons and yards at checkout, then size the load with the calculator so the quantity matches your job. Order online, pick a delivery date, and a dump truck brings the material to the site.

Pennsylvania Rock Supply delivers across the county, including West Chester, Phoenixville, Coatesville, Downingtown, Exton, Paoli, Kennett Square, Oxford, Thorndale, Parkesburg, Berwyn, Spring City, Malvern and West Grove.

Order Your Chester County Aggregate

Size your load with the calculator first, then order the 2A modified, clean stone, sand or topsoil your project needs. Choosing the quantity before checkout keeps the delivery right for the job. Place your order online and pick a delivery date that fits your schedule.

Order 2A Modified and Crushed Stone in Chester County, PA