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UFS 3-220-10 16 January 2026 UNIFIED FACILITIES SUPPLEMENT (UFS) APPROVED FOR PUBLIC RELEASE; DISTRIBUTION UNLIMITED SOIL MECHANICS (DM 7.1) UFS 3-220-10 16 January 2026 FOREWORD Unified Facilities Supplements (UFS) provide non-mandatory, supplemental information in support of Unified Facilities Criteria (UFC). Only UFC establish enforceable criteria. UFS are For Information Only (FIO) and exist to help users understand and apply UFC requirements. The purpose of UFS is to offer procedural guidance, best practices, lessons learned, examples, and explanatory materials that clarify how to meet UFC criteria. They may include step-by-step procedures, checklists, illustrations, or decision aids, but they do not create new requirements or modify UFC content. UFS are developed by Discipline Workin
tonite SCL Sedimentation compression line for natural clays (Burland 1990) SCPTu Seismic piezocone test SDG Soil density gauge SLAR Side-looking airborne radar UFS 3-220-10 16 January 2026 526 Term Definition SPT Standard Penetration Test SS Surface stiffness TVA Tennessee Valley Authority UAV Unmanned aerial vehicle UEL Upper explosive limit USACE United States Army Corps of Engineers USBR United Stated Bureau of Reclamation USCS Unified Soil Classification System USDA United State Department of Agriculture USEPA United States Environmental Protection Agency USFS United States Forest Service USGS United States Geological Survey UU Unconsolidated undrained VST Vane shear test UFS 3-220-10 16 January 2026 527 This Page Intentionally Left Blank UFS 3-220-10 16 January 2026 528 APPENDIX D. GL
ge capacity cannot be provided using trenches, surface drainage facilities are required to prevent ponding. UFS 3-220-10 16 January 2026 330 6-5.3.1 Retaining Wall Drainage. Water imposes additional destabilizing forces on retaining and basement walls that can lead structural distress or collapse. Drainage systems should be designed to prevent the buildup of water behind walls. Figure 6-22 presents several alternatives for providing retaining wall drainage. Figure 6-22 Retaining Wall Drainage Alternatives UFS 3-220-10 16 January 2026 331 Figure 6-23 Seepage into Drainage Trenches Used for Draining Ponded Areas (after Kirkham 1950 and 1960) UFS 3-220-10 16 January 2026 332 6-5.3.2 Filters and Drains for Embankments. Drains and filters are constructed within dams, levees, and other embankmen
15,30 Molto 50 1,3 240/4 15 6, 11 Martinique 50 1,3 220 NA Mauritius 50 1,3 230/400 6.5, 22 Mexico 60 1,3 127/220 6.6, 13.2, 13.8, 23, 34.5, 44, 69 Monaco 50 1,3 127/220 10,20 220/380 Montserrot 60 1,3 230/400 NA Morocco 5.5, 20, 22* Agadir 50 1,3 127/220 220/380 Beni-Mellal 50 133 127/220 220/380 El-Haceima 50 1,3 220/380 Khemisset 50 1,3 220/380 Kheniha 50 1,3 220/380 Oued-Zem 50 1,3 127/220 220/380 Sidi Kacem 50 1,3 127/220 220/380 Sidi Slimane 50 1,3 127/220 220/380 Souk-El-Arba Gharb 50 1,3 127/220 220/380 All Others 50 1,3 127/220 Mozambique 50 1,3 220/380 6.6, 11, 22, 33 Myanmar/Burma 50 1,3 230/400 3.3, 6.6, 11, 33 Nepal 50 1,3 220/440 11,33 Netherlands 5.3, 6, 10, 12.5, 20, 25’ Amsterdam 50 1,3 220/380 220 Delft 50 1,3 220/380 220 All Others 50 1,3 220/380 B-10 TM s-688 Country/Ci
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