Class 2 Base, Sand and Gravel Delivery in Mariposa County, CA
Planning a driveway, a patio base or a drainage run in Mariposa County, CA? California Rock Supply delivers gravel, stone and aggregate delivery in Mariposa County straight to your site. Most jobs here start with Class 2 base, the Class 2 aggregate base that Caltrans specifies in Section 26.
Foothill ground is rocky and often shallow over bedrock, so what you put under a drive or pad matters. Order online, size the load, and pick your delivery date at checkout.
Materials Delivered in Mariposa County
Class 2 base is the standard California base material. Caltrans Standard Specifications Section 26 specifies aggregate base as Class 2 or Class 3 in a 3/4 inch or 1-1/2 inch maximum grading. Class 2 is the higher-strength grade and the common base under drives, pads and pavers.
Locals also call it Class II base, Class 2 aggregate base or base rock. It goes down under pavers, slabs and Stone Screenings paths, then gets compacted. The spec also allows processed reclaimed asphalt and concrete, which is how recycled Class 2 base and crushed miscellaneous base (CMB) are made. Both work the same way under drives and pads.
Washed stone rounds out the list. 3/4" Crushed Stone covers drainage beds, drive surfacing and construction entrances, and River Cobble handles decorative beds, borders and dry creek beds.
Choosing the Right Material
Start with what the ground under the job does with water. Mariposa County splits between rocky foothill soils, shallow over bedrock with clay in places and fast-draining Stone Screenings in others, and thin mountain soils over granite in the higher country.
Compare that with Stanislaus County and Merced County on the Central Valley floor. Both sit on deep valley alluvium with heavy clay that cracks in summer and a cemented hardpan a few feet down that stops water moving deeper. A pad there has to deal with water sitting on top of hardpan.
Mariposa County ground drains faster on the slopes, so drives and pads are built to shed water and give runoff from above a path. Madera County spans the valley floor, the Sierra Nevada foothills and the mountains, so its ground is similar to Mariposa County in the foothill and mountain parts and more like the valley counties on the floor.
On the job, that means Class 2 base and drain rock carry more of the load here, while valley jobs lean harder on drainage layers to get water past the hardpan.
Ground Conditions Across Mariposa County
Water drives the design. In the foothills around Mariposa, Catheys Valley, Midpines and Hornitos, heavy winter rain runs off quickly over shallow soil and bedrock on slopes. Clay pockets hold water. Drives and pads need to shed water, and runoff from slopes above needs somewhere to go.
Up in the mountains around Fish Camp, winter storms bring rain and snow, and melting snow keeps the ground wet into spring. Water runs fast off rock and thin soil and collects where drives and pads cut across it. Freeze-thaw is a real design factor there, since freezing nights are routine through winter.
Erosion follows the same pattern. Runoff down steep slopes, drives and road cuts in heavy winter rain, plus debris flows when intense rain hits recently burned slopes. RipRap armor at creek banks, culvert outlets and slope faces is the usual answer, with drain rock behind it so water has a path.
Timing matters too. Work runs best from late spring into fall. Winter storms turn clay and steep drives to mud, and higher towns can see snow delays in mid-winter.
Delivery Across Mariposa County
Bulk material arrives by dump truck and gets dumped at the site. Order online, choose your quantity by the ton or yard, and size the load with the calculator before you check out. Pick a delivery date that fits your schedule at checkout.
Have the drop spot ready before the truck arrives. Clear the area, mark anything overhead or buried, and make sure the truck can reach the spot and turn around. A clear, level pad for the pile keeps the material clean and easy to move.
Coverage runs across Mariposa, Catheys Valley, Midpines, Hornitos, Coulterville and Fish Camp. Steep foothill and mountain drives can be tight for a dump truck, so flag any access limits when you order.
Order Class 2 Base and Gravel for Your Mariposa County Project
Drives, parking pads, paver and slab base, drainage runs, creek bank armoring and planting areas: California Rock Supply covers the material for all of it across Mariposa County. Order online, size your load with the calculator, and pick a delivery date at checkout.