Gravel, Stone and Soil Delivery in Las Cruces, NM

Loamy sand that swallows water

The USDA soil survey names Bluepoint loamy sand, 0 to 5 percent slopes, as the map unit at the center point of ZIP 88001. Bluepoint makes up 85 percent of that unit, so the description fits the spot closely.^[1]

Loamy sand is mostly sand grains with a little silt and clay between them. The survey rates Bluepoint somewhat excessively drained and puts it in hydrologic group A, the class where water soaks in fast and little runs off. Rain that lands on bare ground disappears quickly, and so does irrigation water, which slides down past shallow roots before they can use much of it.^[1]

Shrink-swell in the top 100 cm is low, at 0.3 percent. The ground hardly moves as it wets and dries, which suits slabs, walls and edging. Loose sand still has little grip of its own, so a surface laid straight on it can shift and rut under tires.^[1]

Below the soil, the USGS state geologic map shows Piedmont alluvial deposits at the center point, unconsolidated alluvium of Gelasian age. Alluvium of this kind is sand, gravel and silt washed down from higher ground and laid in fans, loose material rather than solid rock.^[2]

The ground surface at that center point stands 3,990 feet above sea level.^[3]

Rare rain and mild winters at State Univ

Weather normals for ZIP 88001 come from the NOAA station at State Univ, NM, about 1 mile away. That station averages only 9.1 inches of precipitation a year, a desert total.^[4]

Snowfall at the same station averages 1.0 inches a year. Lows reach 32 F or colder on 69 days in a normal year, mostly clear winter nights that warm quickly after sunrise.^[4]

At State Univ, the median last spring freeze falls on March 12 and the median first fall freeze on November 13. Frost-tender plants can go in after the March date, and the stretch after the November date is the time to cover them or let them rest.^[4]

With so little rain, the bigger risk is the occasional summer storm that drops a lot of water in a short time. Group A ground takes most of it in, but runoff from roofs, walls and paved drives still gathers in one spot and can carve a channel through loose sand.^[1],[4]

A yard built from stone

Desert yards in Las Cruces lean on stone because stone needs no water. Decomposed Granite is the base of many of them: spread, wetted and rolled, it locks into a firm, tan surface for paths, patios and open ground. River Rock in mixed sizes forms dry creek beds that carry storm runoff across a yard and look natural in a dry climate.^[1],[4]

On somewhat excessively drained sand, landscape fabric under decorative stone does most of its work against weeds, not water. Lay it under River Rock, Pea Gravel and #57 Crushed Stone beds, overlap the seams, and pin it well so wind cannot lift the edges before the stone goes on.^[1]

Riprap belongs where storm water arrives with force, such as the outlet of a downspout channel or the low end of a wash running across a lot. The large, heavy stones break up the flow so it slows down and soaks into the sand rather than cutting deeper.^[1]

Shade trees and garden beds still need real soil. Mixing Compost or Garden Soil into planting holes gives loamy sand something to hold water with, and a cover of Wood Chips or Brown Shredded Mulch slows evaporation in the dry air.^[1]

A drive on loose sand

Sand that hardly swells is easy ground for a drive, as long as the stone on top has something to bind it. Start by scraping away loose surface sand and any weeds, then dampen and compact what remains. A thin geotextile layer helps keep the base stone from pressing down into the sand over time.^[1]

Road Base does most of the work here. Its fines fill the gaps between angular pieces, and when it is wetted and compacted in thin lifts it sets into a hard layer that sandy ground alone cannot provide. 1-1/2" Crushed Gravel under the Road Base adds strength for heavy trucks or a long rural lane.^[1]

For the top course, Driveway Gravel or 3/4" Crushed Stone gives a clean finish with good traction. Asphalt Millings make a dark, low-dust alternative that binds in summer heat. Pea Gravel looks good but rolls under tires on loose sand, so save it for walks and borders.^[1]

Winter is gentle on a drive in Las Cruces. The State Univ station logs 69 days a year at or below 32 F, and those freezes tend to be light and brief, so frost heave seldom lifts a base the way it can in colder places. Summer heat and wind do more of the wear, loosening fines on the surface. A light watering and a pass with a roller in spring brings a Road Base drive back to a tight finish.^[4]

Pea Gravel or Decomposed Granite for a patio

A backyard patio in Las Cruces often comes down to these two. Decomposed Granite packs into a smooth, walkable floor that holds chairs and tables level, and with only light rain at the State Univ station it stays firm for long periods once rolled. It can track indoors on shoes until it settles, and it needs a top-up of fines now and then.^[1],[4]

Pea Gravel is softer underfoot and drains instantly, which suits fast-draining sand. It does not pack, so chair legs sink and the stones scatter onto nearby surfaces. A steel or stone edge holds either material in place. For a firmer Pea Gravel patio, lay it over a compacted bed of Stone Dust Screenings.^[1]

Low shrink-swell under the patio means either surface stays level for years once the base below it is compacted. Edges are where most patios fail, so set steel or stone borders before the stone arrives, and keep irrigation heads pointed away from the patio floor.^[1]

Homes in ZIP 88001

ZIP 88001 falls in Dona Ana County. The Census counts 16,766 housing units in the ZIP, and detached single-family houses make up 54 percent of them.^[5]

Homes in ZIP 88001 have a median build year of 1978. Owners occupy 42 percent of the occupied units, and renters the rest.^[5]

Las Cruces as a whole has 50,423 housing units. The city's share of detached houses is 60 percent, and its median build year is 1991.^[5]

Detached houses with their own yards often call for the larger loads, such as a new side-yard path or a refreshed front bed of Decomposed Granite. Apartments and townhomes tend to need smaller amounts, perhaps a few yards of River Rock for a shared courtyard or a border along a parking area.^[5]

New Mexico's Department of Transportation specifies Base Course, Type I, in Section 303 of its Standard Specifications for Highway and Bridge Construction, 2019 Edition.^[6]