Bulk Aggregate Delivery Across Yakima County, WA
Order gravel, stone and aggregate delivery in Yakima County, WA online and have it tipped on your site. Washington Rock Supply delivers bulk material by the ton or by the yard.
Start with 5/8 minus, the crushed surfacing top course that packs hard under a drive, a parking pad or a shop slab. The ground here is windblown loess over basalt, dry and loose through the working season.
Ground Conditions Across Yakima County
This county sits on windblown loess over Columbia River basalt. Across the Columbia Basin, Yakima Valley and the channeled scablands, the Ice Age floods stripped the silt off in places and left bare basalt, then dropped sand and gravel bars in the coulees and along the rivers.
Where the silt sits deep, it grows wheat, hops, orchards and vines under irrigation. Where flood gravel reached the surface, water disappears straight down instead of sitting.
A thin base fails fast on the silt. The silt sheds a thunderstorm or a rapid thaw rather than soaking it up, so the surface pumps and ruts.
Rainfall is scarce across the region, seven to nine inches a year in parts of the basin, then too much at once. Dry, loose ground needs a base that holds together between storms.
Wind off bare, dry silt moves soil, and short violent runoff cuts rills and gullies where ground has no cover. Irrigation runoff moves soil too.
Arm the places where water concentrates.
The working season runs long on either side of a hard winter. Eastern Washington's wet weather season for erosion control runs October 1 through June 30.
Winters here are cold and dry, and the ground freezes properly, unlike west of the Cascades. Frost heave in an unbound base is something to design for.
Materials Delivered in Yakima County
5/8 minus is the local name for crushed surfacing top course, or CSTC. It is crushed rock with the fines left in, so it packs hard and sheds water instead of soaking it up.
Contractors and quarries shorten those to CSBC and CSTC and order them as 1 1/4 minus and 5/8 minus.
1 1/4 minus, or crushed surfacing base course, is the structural course below a 5/8 minus top. It carries load and stays workable on soft wet ground.
For drainage, drain rock (also called 7/8 clean) is washed with no fines, so it keeps its voids. Use it in footing drains, French drains and infiltration trenches where a perched water table sits on till.
3/4 clean crushed rock is the washed counterpart to a minus product, so it drains instead of compacting. Reach for it in trench backfill, pipe surround, drain fields and under-slab drainage.
Smaller washed stone matters too. 3/8 clean serves paver joints and permeable setting beds.
Crusher dust, or screenings, beds pavers and flagstones and fills joints. 1/4 minus is the fine walkway product, and river rock in rounded sizes covers dry creek beds and splash pads.
Sands, soils and mulch round out a load. Mason sand goes into mortar and stucco, washed sand into concrete and setting beds, fill dirt raises grade, and beauty bark dresses planting beds.
Delivery Across Yakima County
Order online by the ton or by the yard, whichever suits how you buy. Each product page has a calculator if you want to size the load before checkout.
Pick a delivery date at checkout. A dump truck tips the load in one pile on your site.
Coverage runs across the county, including Yakima, Sunnyside, Grandview, Toppenish, Selah, Wapato, Moxee, Granger, Zillah, Mabton, Tieton, Naches, Harrah and White Swan.
Choosing the Right Material
Benton County shares this ground. It sits on the same Columbia Basin, Yakima Valley and channeled scablands mix of windblown loess over basalt, with flood gravel bars in the coulees, so the base and drainage choices carry over unchanged.
Klickitat County is different. It spans more than one zone, taking in this same loess and basalt ground plus the Cascade Range and the east-slope valleys, so the material choice can shift with where a site sits.
Kittitas County differs most. Its ground is thin, stony soil over volcanic and granitic rock on the slopes, with andesite, pumice and ash around the volcanoes and glacial and river gravel on the valley floors.
Match the material to the ground and the job. On deep silt, build the structural course with 1 1/4 minus and cap it with 5/8 minus.
Questions About Ordering in Yakima County
Should I order material by the ton or by the yard?
Both work, and the choice usually comes down to how you are used to buying. Washington Rock Supply lists quantities either way, and each product page has a calculator you can use before checkout.
Which stone is best for drainage in Yakima County?
Washed stone with no fines, because the fines are what stop water moving. Drain rock, also called 7/8 clean, suits footing drains, French drains and infiltration trenches.
Use 3/4 clean crushed rock for trench backfill, pipe surround and under-slab drainage, and #8 stone for finer runs. #4 stone is the size for drywells.
What do I need to have ready for a bulk delivery?
Enough room for a dump truck to reach the spot and tip the load in one pile, and a clear idea of the quantity. Order online, choose your ton or yard figure, and pick a delivery date at checkout.
Order Bulk Aggregate for Your Yakima County Project
Size the load with the calculator on any product page, then order by the ton or the yard and pick your delivery date at checkout. Washington Rock Supply brings 5/8 minus, 1 1/4 minus, drain rock and the rest of the load to sites across Yakima County.
Order online when you are ready.