Crushed StonesRip Rap 4
IDOT-certified Rip Rap 4 is a massive 16"x12" crushed stone built for the most demanding erosion control, slope stabilization, and infrastructure protection applications. When the job calls for maximum durability, Rip Rap 4 delivers.
Rip Rap 4 (IDOT Certified #022RR04) is one of the largest and most robust crushed stone aggregates available, sized at 16" x 12" and engineered for applications where extreme forces require an equally formidable material. Its substantial mass and angular, interlocking profile make it virtually immovable under the hydraulic and gravitational stresses that lesser materials cannot withstand.
Rip Rap 4 is the premier choice for slope stabilization and erosion control on steep embankments, hillsides, and high-velocity waterways where smaller stone simply cannot hold. It provides critical protection for infrastructure including bridges, culverts, retaining walls, and utility corridors — safeguarding costly assets from undermining, scour, and erosion over the long term. Its size and weight also make it an effective deep base material in heavy civil applications where a strong, immovable foundation layer is essential.
IDOT-certified for quality and performance, Rip Rap 4 is the go-to material for engineers and contractors tackling the toughest erosion, drainage, and infrastructure challenges.
Common Uses: Erosion and slope stabilization, drainage systems, base material, and infrastructure protection.
Technical Specifications
- Particle Size
- 16 in. x 12 in. (405 mm x 305 mm)
- Bulk Density
- 100 – 115 lbs/ft³ (1,600 – 1,840 kg/m³)
- Specific Gravity
- 2.60 – 2.70
- Water Absorption
- 0.5% – 2.0%
- Los Angeles Abrasion Loss
- ≤ 45% (ASTM C131)
