Retaining Wall Geogrid & Block Calculator
Local SRW block, geogrid, drainage, and base prompts with product, soil, permit, utility, excavation, and qualified-review warnings
Free retaining wall material screen for hardscape contractors, landscape designers, and owners who need an early SRW quantity worksheet before product and engineering review. Enter wall height, length, local block row, setback prompt, soil prompt, surcharge prompt, and buried-depth prompt. The app returns local block, cap, geogrid-roll, drainage-stone, drain-pipe, filter-fabric, base-gravel, and adhesive quantities with source boundaries carried into the export.
CMHA, FHWA, ASTM, IBC, OSHA, 811, and NIST source pointers are included for context, but the app does not reproduce a retaining-wall design manual or approve an SRW system. Actual wall performance depends on the selected block and geogrid product, connection testing, retained and foundation soils, groundwater, drainage, surcharge loads, slopes, seismic and frost conditions, wall geometry, utility conflicts, local code, permits, inspections, and qualified structural or geotechnical review.
The local geogrid trigger and roll count are estimating prompts only. Treat the output as a checklist for what must be verified against the manufacturer, project specification, geotechnical report, current local requirements, excavation-safety plan, and site conditions before purchase or construction.
Review aggregate compaction and shrinkage prompts for base material
Aggregate Compaction Calculator →Screen soil-bearing assumptions before geotechnical review
Soil Bearing Capacity Calculator →Review storm-pipe capacity prompts for the wall drain outlet
Storm Pipe Sizing Calculator →Estimate CMU block quantities if reviewing a masonry-wall alternative
CMU Block Calculator →How It Works
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Enter Local Wall Prompts
Input wall height, wall length, setback per course, buried-depth prompt, and whether cap blocks should be counted. Confirm whether height means exposed height, total design height, or another project-specific definition before using the result.
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Choose Product and Site Rows
Select the closest local block, soil, and surcharge rows. Replace them with current SRW manufacturer data, geotechnical information, site survey, and project load assumptions during review.
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Review Material Prompts
Use the block, cap, geogrid, drainage stone, base gravel, drain pipe, filter fabric, and adhesive rows as early estimating prompts. Add waste, corners, steps, curves, tiers, caps, product packaging, and supplier constraints outside the app.
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Carry Source Gaps Forward
Use the warnings as a checklist for CMHA/manual review, product submittals, ASTM connection data, drainage design, utility locates, OSHA/state excavation requirements, local permit/AHJ review, and qualified engineering review.
Built For
- Hardscape contractors building a preliminary SRW material checklist before supplier and engineer review
- Landscape designers comparing early block, drainage, and reinforcement prompt quantities before specification review
- Owners estimating project scope before discussing product data, site conditions, permits, and qualified design needs
- Civil or geotechnical reviewers documenting which local assumptions still need source verification
Features & Capabilities
Local Block Quantity Rows
Counts wall blocks, cap blocks, courses, blocks per course, and pallet prompts from local face dimensions while warning that exact product data, corners, caps, waste, and packaging remain unresolved.
Geogrid Review Prompts
Shows local layer, length, area, and roll prompts when height, soil, or surcharge rows trigger review. It does not determine strength, spacing, pullout, connection, creep, or global stability.
Drainage and Base Prompts
Screens drainage-stone, drain-pipe, filter-fabric, trench-width, trench-depth, and base-gravel quantities. Drainage details, outlet legality, filter selection, erosion, frost, and stormwater controls require project review.
Source-Boundary Export
Report and PDF output carry source warnings, residual gaps, and source-pointer IDs so assumptions do not get separated from the material worksheet.
Frequently Asked Questions
Learn More
Segmental Retaining Wall Source Boundaries
How to use SRW material prompts while keeping product data, soil, surcharge, drainage, permit, utility, excavation, and qualified engineering review separate.
Aggregate Compaction & Material Ordering
How to calculate loose material quantities for compacted fill, including swell factors, shrink percentages, and truck load planning.
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