b'ECP Soil Nail TerminationsPart No. TAS-150 WP 12-12Wall Plate for 1-1/2 Wall Plate with RebarWall Plate Square Soil Nail shaft.1/2 x 12 x 12 with 2-1/8 dia. holePart No. TAS-175 WP 12- 12 Wall Plate for 1-3/4Square Soil Nail shaft.1/2 x 12 x 12 with 2-3/8 dia. holePart No. TAS-150 WPRWall Plate for 1-1/2 Square SoilNail shaft.3/8 x 6 x 6 with 2-1/8 dia. hole, and four #4 rebarby 36 longPart No. TAS-175 WPR 3/8 Wall Plate for1-3/4 sSquare Soil Nail shaft.3/8 x 6 x 6 with 2-3/8 dia. hole, andfour #4 rebar by 36 long .Product LimitationsSoilnailsaredesignedtoattain although under ideal soil conditions, excavations as deep aspulloutresistancefromwithinthe 25 feet deep have been reported.slidingsoilmassalongwiththe When designing soil stabilization with surcharge loads nearresistance from the stable soil behind thetopoftheexcavationsuchasbuildings,roads,soilthe movement plane.As a result of overburden, etc, the surcharge loads must be included withthis natural tensioning,onemust the weight of the soil mass being retained.With an expectedanticipate smallsoil movements slump of 1/8 inch for each five feet of excavation, one shouldhorizontally and vertically at the top considerstabilizingtheperimeterfootingsofnearbyof the excavation on the order of 1/8 structureswhenevertheexcavationexceeds10to12feetinch movement for each five feet of because lateral and vertical movements on the order of 1/4 toexcavation.Thesemovementsare 3/8inchcouldcausestructuraldamageto the existingnormallynotofconcernunlessa structures nearby.buildingissituatedclosetotheproposed soil cut.Creep of the soil Table 2.Capacities Of ECP Soil Nailsmass after the initial soil movementisusuallynotaproblem;however Shaft Size Shaft Ultimate-Limit Useablewhen the soil liquidity index is 0.2, Configuration Tension Strength Torsionasoilnailmatrixisnot 1-1/2 Square Solid Bar 70,000 lb. 7,000 ft-lbrecommended. 1-3/4 Square Solid Bar 100,000 lb. 10,000 ft-lbSoilnailsmaynotbesuitablein IMPORTANT NOTE:situationswherethesoilreport The capacities listed are mechanical ratings.One must understand thatindicatesthepresenceofweathered the actual installed load capacities are dependentupon the actual soilrock anywhere within the area to be conditionsonaspecificjobsiteandthestrengthoftheterminationstabilized.Soilnailsarealsonot connection.The Useable Shaft Torsional Strengths given here are therecommended in loose sand with SPT maximumvaluesthatshouldbeappliedtotheproduct.Furthermore,value of N 7 blows per foot.The these torsional ratings assume homogeneous soil conditions and properalignment of the drive motor.In homogeneous soils it might be possible touse of soil nails must be approached achieve 90% to 95% of the ultimate torsional strength shown in the table.withcautionwherehighlyplastic The designer should select a product that provides adequate additionalclays and silts are present within the torsional capacity for the specific project and soil conditions.soilmass.Soilnailsarenotrecommended for low plasticity clay EachsoilnaildesignrequiresveryspecificanddetailedsoilhavingSPTvalueofN 6 information involving the soil characteristics at the site andblows per foot. surchargeloads,ifany.EachdesigniscomplicatedandThepracticallimitforexcavations highly technical.The design and specifications should onlybe prepared by a Registered Professional Engineer trainedusingthesoilnailstabilization in soil nail design and familiar with the specific job site.techniqueisapproximately20feet;ECP Helical Torque Anchors Technical Service Manual2021 Earth Contact Products, L.L.C.2021-09 Chapter 3 - Page 54 All rights reserved'