Railroad Ballast, Stone and Soil Delivery in Airway Heights, WA

Washington Rock Supply handles gravel and aggregate delivery in Airway Heights, WA, and the ground here shapes what you order. Much of the Spokane Valley sits on cobbles, gravel and sand left by the Missoula floods, with a thin loess cap on ground south and west of the city.

That open ground means a 5/8 minus surface course over a 1 1/4 minus base is the usual way to build a drive or pad that holds.

Materials for Airway Heights Projects

Slope, swale and bank protection is coarse stone work. The stone has to be big enough to stay put when runoff comes off a cut slope or a road ditch, and rounded stone will not do it.

Riprap is the starting point.

RipRap armours shorelines, streambanks, culvert outfalls and cut slopes. Large River Rock, the 2 to 8 inch round, suits swale and ditch armour, bank toes and feature beds where a smaller stone would wash away in a winter storm.

Railroad Ballast is the other coarse option, for rail spurs, yard track and heavy equipment pads. Say the name in full.

Below the coarse end, the sizes get finer and the jobs change. 1 1/4 Minus is the structural base course under a drive, parking area or slab, with a larger top size and fewer fines than 5/8 minus.

5/8 Minus, also called crushed surfacing top course or CSTC, is the Washington default surfacing course.

The fines stay in a minus product, so it packs hard and sheds water instead of soaking it up. Clean stone is washed, so it drains instead of compacting.

That split decides most material choices on a site.

Delivery to Airway Heights and the Surrounding Area

Airway Heights sits in Spokane County, and the same online checkout covers Spokane, Cheney, Liberty Lake, Mead and Medical Lake. It stays the same transaction whether you are close in or out on the edge of the county.

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

Then a dump truck tips the material on site in one pile.

Ground and Conditions in Airway Heights

Across the Spokane and the Selkirk foothills, the valley gravel is open enough that water moves through the aquifer below it at up to 60 feet a day. That makes for easy infiltration, and it also means whatever sits on the surface goes down with it.

The aquifer has carried a federal sole source designation since 1978.

Compacted fill and shallow basalt shelves are what make the wet spots. Where water perches, a drain rock layer earns its place instead of a deeper minus course.

The working season runs the other way. There is a long dry stretch for base and paving work, then a hard stop once the ground freezes, and eastern Washington's wet weather season for erosion control runs October 1 through June 30.

Runoff cuts the loess on the hills and gullies out draws and road ditches during the spring thaw.

On frost, Spokane sets its footing depth well below the western Washington figure, at 24 inches in the Spokane Municipal Code design criteria. That is a footing depth set by the building official, not a target for a gravel base.

Repeated freeze-thaw on an unbound surface is the reason the timing matters as much as the material.

Questions About Stone and Drainage in Airway Heights

What stone should I use for drainage in Airway Heights?

Use a washed, fines-free stone so it keeps its voids. Drain rock, also called 7/8 clean, is the usual choice for footing drains, French drains and infiltration trenches.

For trench backfill, pipe surround and drain fields, 3/4 Crushed Stone does the same work at a different size. A minus product compacts instead of draining, so it is the wrong pick where water needs to move.

What should I have ready when the truck arrives?

Have the drop spot clear and reachable, and know where you want the pile. The truck tips the load in one pile, so the spot you choose is where the material stays.

Order by the ton or the yard through the calculator on the product page, and pick your delivery date at checkout. Nothing else is needed on the day.

Order Stone and Soil for Airway Heights

Washington Rock Supply delivers bulk gravel, sand and soil across Airway Heights, Spokane County and the surrounding towns. Choose your material, set the quantity by the ton or the yard, and pick a delivery date at checkout.

Place your order online and the truck brings it to your site.