Screenings Coarse Sand (3/8" minus)

Screenings Coarse Sand (3/8" Minus): Composition and Characteristics

Screenings Coarse Sand (3/8" minus), also known as 3/8" Crushed Stone with fines, is a manufactured aggregate material. It consists of angular, irregular particles ranging from fine dust and stone dust (fines) up to 3/8 inch (9.5 mm) in size. This material typically appears in gray or tan hues, depending on the source rock such as limestone or granite. It is produced by crushing larger aggregate and screening to meet the 3/8" minus gradation.

The mixture contains a blend of fine dust and small stone pieces, which allows it to compact tightly under load while still permitting some water drainage. However, it is not washed and may contain some clay, silt, or dust. Its bulk density usually ranges between 100 and 120 lbs per cubic foot. The angularity and fines content distinguish it from natural sand or gravel, giving it unique compaction and permeability properties.

Primary Uses and Applications

Screenings Coarse Sand is commonly used in various construction and landscaping projects where a stable, compactable base or leveling layer is required. It serves well in applications that balance minor permeability with firm support.

• Base layer below pavers, flagstone, patios, and walkways to provide a level, stable foundation.
• Pipe bedding and backfill for retaining walls, improving load distribution and drainage.
• Fill material for trenching and utility work.
• Underlayment for concrete slabs when specified.
• Horse arenas and barn flooring for firm footing with moderate drainage.
• Temporary erosion control and general fill applications.

Its ability to compact and lock together reduces shifting and settling, making it a preferred choice for hardscape bases and finishing layers. The fines help bind the material, while the 3/8" maximum particle size maintains structural integrity.

Material Specifications and Standards

Limitations and Unsuitable Applications

Despite its versatility, Screenings Coarse Sand is not appropriate for all uses. It should be avoided in situations requiring clean, washed sand or high permeability.

• Not suitable as a structural base for heavy load-bearing applications unless project specifications explicitly allow.
• Unsuitable for concrete mixes unless it meets strict gradation and cleanliness requirements.
• Not recommended for drainage layers where rapid water flow is critical due to fines content reducing permeability.
• Should not be used in playgrounds, sandboxes, or other applications needing clean, dust-free sand.
• Unsuitable as topdressing on turf or for potable water applications.
• Not a substitute for gravel or larger aggregate in structural fill.

Comparison with Similar Materials

Installation Guidelines

Proper installation of Screenings Coarse Sand is essential for performance and longevity. Preparation and compaction are key steps.

• Prepare a well-compacted, level subgrade free of organic material and debris.
• Apply screenings in 2 to 4-inch layers for base applications.
• Compact each layer using a plate compactor or hand tamper to maximize density.
• Avoid overwatering during compaction to prevent washout and uneven settling.
• For finishing layers or joint filling, spread evenly and sweep into joints, then lightly compact or water to lock material in place.

Performance Characteristics

The mixture of fines and crushed stone creates a material that compacts tightly yet allows slow water percolation. This balance supports firm footing and moderate drainage.

• Compaction: Fines bind particles, reducing movement and settling.
• Drainage: Allows slow water flow, preventing pooling.
• Durability: Resistant to weathering and erosion when installed correctly.
• Stability: Provides a stable platform for pavers and other surface materials.

Pricing and Delivery Information

Gravelshop offers Screenings Coarse Sand (3/8" minus) with transparent pricing that includes delivery across multiple U.S. locations. Prices vary by region, reflecting sourcing, logistics, and local market conditions. Delivery is performed by trusted local haulers with options to select preferred delivery dates and times.

Below are sample prices per ton and delivery fees for various locations:

Ordering and Delivery Terms with Gravelshop

Gravelshop provides easy online ordering with transparent pricing that includes delivery. Customers can select their preferred delivery date and time slot. Delivery is carried out by independent trucking companies, and materials are dropped off at the most suitable location on the property as determined by the driver.

Road access must be at least 12 feet wide and suitable for heavy trucks. Gravelshop does not offer spreading or landscaping services; the material is supplied only. Customers are responsible for the material once delivered, especially if left unattended.

Payment options include Visa, Mastercard, American Express, Discover, Diners Club, JCB, Apple Pay, Google Pay, and Cash App Pay. After purchase, customers receive email confirmation with payment and shipping details. Gravelshop supports customers with order quantity calculations and material selection guidance.