Rip Rap Calculator

Rip Rap Calculator is the ultimate professional-grade utility designed for civil engineers, landscape architects, contractors, and environmental specialists to design, size, and estimate riprap erosion armor.

Engineered for field and office use, this app computes material specifications, volume, tonnage, and project costs while adhering to established industry guidelines, including the US Federal Highway Administration (FHWA HEC-23) and the US Army Corps of Engineers (USACE) standards.

Whether you are stabilizing a stream channel, protecting a lakeshore, designing culvert outlets, or preparing a construction bid, the Rip Rap Calculator delivers instant, precise calculations and interactive visual schematics.

🌟 KEY FEATURES

* Material Estimation & Costs
- Enter project length, width/slope, and layer thickness.
- Compute volume in cubic yards and total weight in tons.
- Estimate total costs and required truckloads based on material density and truck capacities.
- Choose from standard material density presets (Limestone, Granite, Sandstone, Trap Rock, Gravel) or enter a custom value.

* Hydraulic Sizing (Stability Design)
- Water Velocity Mode (FHWA HEC-23 / USACE): Input flow velocity and design parameters to determine the median stone size (D50), minimum/maximum stone distribution limits, and required layer thickness.
- Wave Height Mode (Hudson Equation): Input maximum wave height and shoreline attributes to calculate critical stone weight and diameter for shoreline wave armor.

* Interactive Cross-Section Schematic
- View a dynamically drawn cross-section illustration showing the subgrade, geotextile fabric layer, riprap thickness, and design high-water (DHW) level.

* Multi-Section Project Manager
- Save and compile multiple calculation areas (e.g., "North Channel", "South Shoreline") into a single, consolidated project report.
- Review cumulative totals for volume, weight, and costs across your entire site.

* AI Geotech Consultant (Gemini-Powered)
- Ask complex engineering, regulatory, or placement questions directly in the app.
- Get immediate guidance on soil conditions, filter fabrics, environmental impact, and FHWA/USACE best practices.

* Professional Reports & Sharing
- Export comprehensive design briefs and material summaries as formatted text for immediate sharing with clients, contractors, or permitting agencies.

🏗️ WHO IS IT FOR?
* Civil & Hydraulic Engineers: Verify stone sizing designs using standard federal equations.
* Excavation & Site Contractors: Quickly calculate exact materials and truckloads needed for competitive bids.
* Environmental & Conservation Agencies: Design stream restoration and bank stabilization measures.
* Lakeshore Property Owners: Determine wave armor requirements to prevent erosion.

Simplify your hydraulic design, streamline material estimates, and ensure compliance with the Rip Rap Calculator. Download today