Bulk Gravel Delivery to Hartwick, IA

Order gravel and aggregate delivery in Hartwick, IA online, by the ton or by the yard. Iowa Rock Supply delivers Class A roadstone, sand, topsoil and decorative stone to Poweshiek County jobs.

This is Southern Iowa Drift Plain ground. Clay subsoil under a loess mantle does not take water, so it perches and drives go soft at the bottom of a grade.

Ground and Conditions in Hartwick

Start with the failure you see on a thin base. A pad or walk poured over too little base pumps, shifts and cracks at the edges within a season or two.

The ground here explains it. Old till sits under a windblown loess mantle, and the buried paleosol beneath is a gummy grey clay that water will not move through.

Across the Southern Iowa Drift Plain, that clay perches water, sheds it downhill and leaves low spots soft. Spring rain on saturated clay is the worst of it, and the region is Iowa's most eroded landscape.

The fix is a compacted base that carries the load and a clean drainage layer where water stands. Clay soils also need to dry before anything gets compacted, so a wet spring pushes base work back several weeks.

Cold winters bring repeated freeze-thaw, enough to heave gravel drives and lanes every spring. Frost depth in this part of Iowa is commonly 42 inches, and the local building official sets footing depth.

Materials for Hartwick Projects

Bedding under pavers and flatwork is where most of these projects start. Get the bedding right and the surface stays flat.

Class A roadstone is the standard Iowa base course: 3/4 inch crushed limestone with the fines left in, so it binds and compacts. Build the base with Class A Roadstone, then bed the surface.

For a new drive, a soft spot or a lane that carries heavy equipment, 1 Inch Roadstone goes down first as a coarser course under a finer surface.

Bed pavers and flagstone on Limestone Screenings. The fines sweep into the joints and lock the surface tight.

Level slabs and pavers over Washed Sand, a clean, free draining grade that stays put under a hard surface. For mortar, paver joints and arena footing, use Mason Sand.

Where water has to move, Clean Rock is washed and open graded, so it passes water straight through. Use it for subdrains, pipe bedding and backfill behind retaining walls.

Delivery to Hartwick and the Surrounding Area

Order online and pick a delivery date at checkout. Choose your quantity by the ton or by the yard, whichever your numbers are already in.

Each product page has a calculator to size the load. A dump truck then tips the material in one pile at your site.

Iowa Rock Supply delivers across Poweshiek County, including Grinnell, Brooklyn, Montezuma, Deep River and Malcom. Hartwick orders arrive the same way as any other address in the county.

Questions About Gravel in Hartwick

What gravel is best for a driveway in Hartwick?

Class A roadstone is the Iowa base course for a drive, a parking pad or a farm lane. It is 3/4 inch crushed limestone with the fines left in, so it binds and compacts.

On soft ground or a lane that carries heavy equipment, lay 1 Inch Roadstone first, then top with a finer course. Top up a drive that has thinned with Driveway Gravel over a compacted base.

How much material will my project need?

Quantities are ordered by the ton or by the yard. Each product page has a calculator to size the load from your project.

Have your measurements ready before you order, then pick your quantity and a delivery date at checkout. A dump truck tips the load in one pile at your site.

Order Roadstone, Sand and Stone in Hartwick

Size your load with the calculator on the product page, choose tons or yards, and set a delivery date at checkout. Iowa Rock Supply delivers bulk gravel, Class A roadstone, sand and topsoil across Hartwick and Poweshiek County.

Place your order online when your quantities are ready.