Landscaping Material Delivered in Cornelius, OR

If you are pricing gravel and aggregate delivery in Cornelius, OR, the first question is usually what to put down. Oregon Rock Supply sells bulk material online and delivers it to your site.

For a driveway or a shop pad, that answer starts with 3/4 minus. It is crushed rock graded 3/4 inch down to fines, so it compacts and locks up instead of rolling underfoot.

Delivery to Cornelius and the Surrounding Area

You order online and choose a quantity by the ton or by the yard. Each product page has a calculator if you want to size the load before checkout.

Pick a delivery date at checkout and a dump truck tips the material on site in one pile. Cornelius sits in Washington County, and delivery covers the surrounding area, including Hillsboro, Beaverton, Forest Grove, Tualatin, and Sherwood.

Materials for Cornelius Projects

Decorative rock does a lot of the finish work around a yard here. Beds, borders, dry creek beds, and ground cover all come down to picking a stone that suits the spot and the look you want.

Willamette River Rock is rounded, water-worn stone off the valley river bars. Use it in decorative beds, along borders, and in dry creek beds.

Large River Rock is the heavier version of the same rounded stone. It suits dry creek beds, splash pads under downspouts, and bank work where small stone would wash out.

3/8" Natural Pea Gravel is a smooth rounded stone for paths, play areas, dog runs, and drainage. Oregon yards say Natural Pea Gravel for this size.

RipRap is angular slope protection rock, specified locally by class from Class 50 up to Class 2000. It armors stream banks, culvert outlets, pond edges, and cut slopes against winter runoff.

For the working surfaces, 3/4 Minus is the standard base under driveways, parking pads, shop floors, and shed bases. Drain Rock is washed and open, so water moves through it in French drains, footing drains, drywells, and downspout runs.

Ground and Conditions in Cornelius

Across the Willamette Valley and Portland Basin, the valley floor is deep slackwater silt laid down by the ice-age Missoula floods. Foothill ground runs to red clay and silty clay loam.

That silt and clay sheds water slowly. With 35 to 45 inches of rain a year falling almost entirely between November and March, a seasonal high water table sits in the lowlands.

An under-built base shows it first. Silt and clay soften under a load, so a drive or pad that goes down on bare ground without a compacted base course moves and ruts.

Winter rain also runs off bare silt and scours banks on the tributaries. That is the case for riprap on cut slopes and culvert outlets before the wet season starts.

Portland treats October 1 to April 30 as the wet weather season, with bare ground stabilized within two days, against seven days from May 1 to September 30. Base and paving work concentrates in the dry season.

Frost heave is a minor problem here next to winter saturation and soft subgrade. The 12 inch frost depth is the Oregon figure below about 2,500 feet, and the county sets it.

Order 3/4 Minus and Decorative Rock for Your Cornelius Project

3/4 minus is the base that carries a drive, a pad, or a shed floor in this ground, and it is what to reach for first. Add river rock, Natural Pea Gravel, or riprap for the finish and the drainage work around it.

Order online from Oregon Rock Supply and have it tipped on site.