Rip Rap - Erosion Control & Rock Slope Protection
Rip Rap is large, irregular rock used to help protect exposed soil, drainage channels, and embankments from erosion. Also called rip rap, erosion control rock, or rock slope protection (RSP), it provides a protective stone layer when properly selected and installed for the project.
TerraBay Materials offers bulk rip rap delivery to homeowners, landscapers, and contractors in Marin County, Contra Costa County, Alameda County and the surrounding Bay Area Counties. Order online for delivery directly to your property or job site, and confirm the required size or RSP class before purchasing.
Large Gray Rock for Functional & Decorative Landscape
Our product photos show rip rap with predominantly gray tones, rough surfaces, and irregular angular shapes. Its substantial size adds natural texture to drainage features, landscape borders, and rock-covered areas.
Use rip rap to create a rugged dry creek bed, define a transition between planting areas, or supply rock for a specified erosion protection project. Color, dimensions, and individual stone shapes vary with the material source and selected size.
Common Rip Rap Applications
Depending on the selected material and project design, rip rap may be used for: Erosion protection along drainage channels and embankments
Creekbank and streambank protection
Rock aprons at culvert and drainage outlets
Slope armoring where specified
Decorative dry creek beds and drainage features
Landscape borders and large rock accents
For functional erosion protection, rock size and installation details should follow the project design. Flow conditions, slope, foundation support, and potential scour influence the appropriate protection system.
Choosing Rip Rap for Your Project
For decorative landscaping, compare the rock’s appearance and approximate dimensions with the scale of your design. Smaller pieces may suit narrower landscape features, while larger rock creates a more substantial visual effect.
For projects requiring Caltrans RSP, provide the specified class and applicable project specifications before ordering. Compliance depends on the complete gradation, rock quality, and required documentation—not the advertised inch range alone.
Follow the project plans for rock layer thickness, filter fabric or filter layers, foundation and toe details, and placement method. Caltrans distinguishes between Method A, which requires deliberate individual rock placement, and Method B, which permits less restrictive placement.
Bulk Rip Rap Delivery in Marin, Contra Costa, Alameda, San Mateo, San Francisco, Sonoma and Solano
TerraBay Materials delivers bulk landscape and construction materials directly to local homes and project sites.
Marin County: Rip rap delivery to San Rafael, Novato, San Anselmo, Mill Valley, and surrounding communities.
Contra Costa County: Bulk rock delivery to Richmond, Concord, Walnut Creek, Lafayette, Orinda, Danville, and nearby areas.
Alameda County: Rip rap delivery to Oakland, Berkeley, Alameda, Hayward, Fremont, and surrounding communities.
Confirm your material selection, quantity, delivery access, and unloading location before scheduling. Plan for suitable equipment to move and place larger stones after delivery.
Before Your Order
Natural rock varies in color, shape, and dimensions. Product photos illustrate the material’s general appearance and do not establish a particular Caltrans class or guarantee every stone’s size.
Selected small and medium rip rap sizes are available at $88 per ton. Larger sizes cost more and require separate pricing. Tax and delivery charges are additional. Contact TerraBay Materials to confirm pricing and availability for your required rock size or RSP class before ordering.
If your plans specify an RSP class, confirm material availability and specification requirements before completing your order.
Order rip rap from TerraBay Materials for bulk delivery in Marin, Contra Costa, and Alameda counties.
