By v2.3, the spreadsheet had a macro that could import CAD geometry directly from the surveyor’s DWG file. By v3.0, it could export to finite-element software for global stability analysis.
| Module | Purpose | |--------|---------| | | Geometry, soil properties, reinforcement data, loading (surcharge, seismic) | | External Stability | Sliding, bearing capacity, overturning, global stability | | Internal Stability | Tensile pullout, rupture strength, long-term creep & durability | | Facing Connection | Connection strength between reinforcement and facing | | Output Summary | Critical depths, required reinforcement length, factor of safety (FS) | mse wall design spreadsheet
Mechanically Stabilized Earth (MSE) walls are reinforced soil structures consisting of alternating layers of compacted granular fill and tensile reinforcement elements. These reinforcement elements, which can be either (e.g., steel strips, bar mats) or extensible (e.g., geogrids, geotextiles), are connected to a facing system, such as precast concrete panels or modular blocks. This composite structure functions like a gravity wall, where the weight of the reinforced soil mass provides stability against earth pressures, surcharge loads, and other external forces. These reinforcement elements, which can be either (e
He changed the backfill from “select granular” to “on-site sandy clay” (phi = 28°). The spreadsheet instantly flashed on sliding (SF: 1.32). He added a geotextile wrap-around drainage layer — PASS again. The spreadsheet instantly flashed on sliding (SF: 1
Inputs: