Gravel, Stone and Soil Delivery in Brockton, MA

Canton soil that drinks rain fast

The USDA soil survey maps a Canton and Urban land complex, 0 to 8 percent slopes, at the ZIP's center point. The Canton series covers 45 percent of the map unit, and 40 percent is mapped as urban land, paved or built over.^[1]

The top mineral layer is very fine sandy loam. The soil is well drained and falls in hydrologic group A, the class where water soaks in fast and runoff stays low. Group A is the fastest-soaking of the four groups. Rain sinks into this ground quickly, so a dry well or a gravel trench can work well here.^[1]

Shrink-swell in the top 100 cm is low, at 1.5 percent linear extensibility. At about 28 inches down, the survey notes a strongly contrasting textural stratification, a sharp change to a different kind of material. Water can slow at a change like that, so test a deep drain hole before you count on it.^[1]

Very fine sandy loam is soft and silky when dry, and it can blow or wash away if left bare. Seed or mulch any exposed soil soon after a dig. Under a drive or patio, it compacts well when damp, so mist the subgrade lightly before you run the compactor over it.^[1]

Rhode Island Formation bedrock

The geologic map puts the Rhode Island Formation under the center point, a Pennsylvanian unit of sandstone, graywacke, shale, conglomerate and anthracite. It is a mixed stack of old sediments, with thin seams of hard coal among them. In most yards, this rock lies well below the depth of any drive or bed.^[2]

The ground at the center point sits 160 feet above sea level, with slopes of 0 to 8 percent in the map unit. Some lots will be flat and some will tilt, so check the fall of your own yard before you plan where runoff goes.^[1],[3]

Graywacke and conglomerate are hard rocks, and broken pieces of them can turn up in old fill or in the lower soil. Set any large stones aside. They work well as edging for a bed, as steps on a slope, or as armor at the outlet of a drain.^[2]

Snow, freezes and rain at the Brockton station

Weather normals for the ZIP come from the NOAA station at Brockton, MA, about 3 miles away. It averages 50.2 inches of precipitation and 34.3 inches of snow a year. Fast-draining soil handles that rain well, but snow piles and melt still need a place to go.^[4]

The Brockton station logs 129 days a year with a low of 32 F or colder. That many freezing nights put any water held in a base to work, lifting and loosening stone. Clean, angular stone over well-drained ground gives a drive the best chance through winter.^[4]

The median last spring freeze at Brockton is April 22. The median first fall freeze comes on October 19. Plant beds after the April date, and finish stone work before the October one so the base can settle before hard frost.^[4]

Ice on steps and walks is the winter problem most owners notice first. A light layer of 3/8" Crushed Stone or #89 Crushed Stone spread on icy stretches gives boots grip, and it does not break down pavers the way heavy salting can. Sweep the stone into a bed in spring and use it again next winter.^[4]

A plow-ready gravel drive

Very fine sandy loam that drains this well makes a firm subgrade for a drive. Strip the sod and topsoil, shape a slight crown and compact the soil. Fabric is still worth adding where the ground is part of the urban land in the map unit, since old fill may hold fines that creep into a fresh base.^[1]

Spread Road Base or Crushed Concrete in compacted lifts. Top the drive with 3/4" Crushed Stone or Driveway Gravel. Angular stone holds up under a plow blade, and a slightly crowned surface sheds melt to the edges. Asphalt Millings are another good top for a plowed drive, since they pack firm and stay put.^[4]

Pick one side of the drive for snow piles and put a strip of #57 Crushed Stone or Drain Rock along it. On group A soil, the melt from those piles soaks in quickly instead of running back across the drive to freeze.^[1],[4]

Spring is repair season. After the median last freeze on April 22, rake plowed stone back from the lawn, fill potholes with Road Base packed with a tamper, and spread a fresh top layer. Waiting until the base dries out keeps you from sealing water into it.^[4]

Homes in ZIP 02301 against the city

The Census counts 24,975 housing units in ZIP 02301. Detached single-family houses make up 38 percent of them, and the median home was built in 1956. Owners live in 50 percent of the occupied homes.^[5]

Brockton as a whole has 37,730 housing units, and 47 percent of them are detached houses. The citywide median build year is 1960.^[5]

Mid-century houses and multi-family buildings often come with drives and walks that have been patched for decades. Rebuilding a sunken walk, regrading a side yard or putting a fresh base under a worn gravel drive are common jobs on lots of that age.^[5]

With detached houses at 38 percent of the ZIP, many drives and yards here may be shared by more than one household. Shared drives need a base that can take more cars, and shared yards benefit from clear lines between parking, walks and beds. A strip of Walkway Gravel or River Rock can mark those lines and give rain a place to soak in.^[5]

Gardens, dry wells and downspouts

Very fine sandy loam drains fast and can dry out in summer. Mix Compost into beds to hold more water, or build raised beds with Garden Soil. A layer of Brown Shredded Mulch, Black Shredded Mulch or Red Mulch keeps moisture in and protects roots on cold nights.^[1]

Group A soil is ideal for sending roof water into the ground. Run each downspout into a pit or trench of Drain Rock wrapped in fabric, set well away from the foundation. Test it first, since the layer change at about 28 inches can slow water in a deep pit. A wide, shallow trench usually works better than a narrow, deep one here.^[1]

Pea Gravel, Walkway Gravel and #89 Crushed Stone make paths that drain well between beds. Mason Sand fills the joints of a brick walk and packs tight.^[1]

Fall is a good time to add Compost to beds on very fine sandy loam. Spread it before the median first fall freeze on October 19, and winter rain and snow will work it into the top few inches by spring planting.^[1],[4]