Order Gravel, Stone and Soil in Rapid City, SD

South Dakota Rock Supply brings gravel and aggregate delivery in Rapid City, SD, straight to your site. Thunderstorms drop fast water on steep ground here, and shallow soil over rock gives it nowhere to sit.

Base course is what answers that.

Base course, also called aggregate base course or 3/4 minus, is the crushed base layer contractors order by name. It goes under drives, parking pads and shed slabs.

Delivery to Rapid City and the Surrounding Area

Order online and set the quantity by the ton or by the yard. Each product page has a calculator to help you size the load.

Pick your delivery date at checkout and a dump truck tips the material on site in one pile.

Delivery covers Rapid City and Pennington County, including Box Elder, Wall, Hill City, New Underwood and Keystone. Whether your pad sits in town or out past the city limits, the truck reaches the site.

Materials for Rapid City Projects

Raising grade comes before everything else on Black Hills ground. Thin soil over rock leaves little to build on, and red clay in the Red Valley rings the hills with ground that will not carry a slab on its own.

Start with fill dirt, also called clean fill, to build a pad up to grade. Once the pad is set, the layers above it can do their jobs.

For a driveway, lay Fill Dirt first, then top it with Base Course and finish with Gravel Cushion. Gravel cushion is the South Dakota term for the crushed top course on a gravel drive.

For a patio or walkway, set Stone Screenings as bedding. Screenings pack hard and hold pavers and flagstone in place.

For drainage, use Washed Rock. Washed rock, also called clean rock or drain rock, keeps water moving in drain tile, drywells and downspout runs.

Ground and Conditions in Rapid City

Across the Black Hills, thin gravelly soils sit over granite, pegmatite and schist in the core, with limestone and sandstone around the rim. Red clay soils fill the Red Valley that rings the hills.

An under-built pad moves on that ground.

Steep ground sends runoff downhill fast, and shallow soil over rock stores almost no water. Limestone ground swallows streams and returns them downstream.

Cut banks and drive shoulders take slope wash after heavy rain and snowmelt.

This part of the state runs a long freeze-thaw season. Rapid City's adopted residential code puts frost depth at 42 inches, so footing depth is set by the local official.

Spring runoff comes through the canyons while snow lingers on high, shaded ground.

Build the pad to grade before the base course goes down. Fill dirt lifts the grade, base course carries the load, and gravel cushion finishes the surface.

Order Base Course and Fill Dirt in Rapid City

Fill dirt raises the grade, base course carries the load, and gravel cushion finishes a drive or pad. That is the order that works on Black Hills ground.

Order by the ton or by the yard from South Dakota Rock Supply and set your delivery for Rapid City.