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BRIGGS ENGINEERING, Inc. copyright BEI 2022 dean@briggs-engineering.com <br /> PRE-FABRICATED BUILDING DESIGN-FOUNDATION CALCULATIONS IBC 2018,ASCE 7-16,OSSC <br /> DEALER WILLIAMS SCOTSMAN-MOBILE MINI SOLUTIONS CRITERIA: 30,50,120C,D,1.5,1500 <br /> DATE: 6-Feb-22 FDN.TYPE: 8-FT Wide Mobile,OFFICE <br /> PROJECT# 202204.01.1 STATES: ID,OR,WA <br /> II.FOUNDATION DESIGN <br /> A.Foundation Components <br /> Individual Bearing Pads-Poured-in-place,Concrete Bearing Pads <br /> Width,wbp= 16 inches <br /> Length,Ibp= 16 inches <br /> Minimum Pier Bearing Area,BA1=(At Base of Pier) 256 Sq.Inches <br /> Minimum Prepared Base Depth,gbd= 2 inches <br /> Minimum Bearing Area,BA2=(At Base of Base) 324 Sq.Inches <br /> IBC-T.18.4.2 Allowable Bearing Pressure At Bottom of Base Material= 1500 psf. By Others <br /> Allowable Load,Pbp=(BA)/144*Q= 3375 pounds <br /> Anchors-Single or Double Helix'Auger'Type <br /> Anchor Capacity(Ultimate Design Value),Anchc= 4725 lbs. <br /> B.Exterior Pads(Around Perimeter) <br /> Floor and Roof Loads: <br /> Exterior Pads Required,Epr= 1 pad <br /> Allowable Load,Pfla= 3375 lbs. <br /> Exterior Uniform Floor Load, ufll=(FLL+FDL+RLL+RDL+PDL)*MW/2• 536 lb/ft. <br /> Max.Pad Spacing,Mps1=Pfla/ufll= 6.30 ft. <br /> Use: (7)16-inch x 16-inch pad @ 6.31-ft o.c.supporting exterior frames. <br /> C.Interior Pads(Floor Loads Only) <br /> Floor Loads: <br /> Interior Pads Required,Ipr= 1 pad <br /> Allowable Load,Pfla= 3375 lbs. <br /> Interior Uniform Floor Load, ifll=(FLL+FDL+PDL)*MW/2+Wht*WDI 368 lb/ft. <br /> Max.Pad Spacing,Mps2=Pfla/ifll= 9.18 ft. <br /> Use: N/A <br /> D.Column Pads(Roof Loads Only) <br /> Roof Loads: <br /> Column Pads Required,Cpr= 2 pads <br /> Allowable Load,Prla= 6750 lbs. <br /> Mateline Roof Beams Uniform Roof Load,mbrl=(RLL+RDL)*MW= 336 lb/ft. <br /> Effective Mateline Beam Span Per Set of Pads,Mbs=Pfla/mbrl= 20.09 ft. <br /> Use: N/A <br /> E.Lateral Design <br /> 1.Longitudinal Walls(Anchors Along Front&Back,Long Walls) <br /> Unit Wind Load,UWL1=(Wht+Rht+Fht/2)*Pw= 278 plf Governs <br /> Unit Seismic Load,USL1=W*pst= 101 plf <br /> Angle of Anchor Strap,Asa,Radians 0.79 45 degrees <br /> Effective Soil Anchor Resistance,ESAR @ Asa'= 3326 lbs. <br /> Building Weight= 13520 lbs 338 plf <br /> Building Weight Used for Lateral Sliding 0% <br /> Transverse Foundation Friction Factor= 0.40 <br /> Gravity Resistance,GR=Building WT*Friction Factor= 0 lbs. 0 plf <br /> OTM=Lateral Load*L*wht/2+(Wind Uplift) 49970 Ft-lbs <br /> RM=Building Wt*W/2 54080 Ft-lbs <br /> Factor of Safety=RM/OTM 1 Needs Uplift Anclors <br /> Use: (1)Anchor per" 11.98 ft=(4)Anchors Per Side <br /> Page 4 of 45 <br /> 2204.01.1-IBC 2018 Std MOB-0 Fdn Calcs 8 <br />