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11 of 41 <br /> A PROJECT NO. SHEET NO. <br /> �� S190702-1 <br /> 133 E Beech St, Everett, WA <br /> PROJECT <br /> LONGITUDE SUBJECT Foundation Stabilization/Jacking <br /> ONE TWENTY° <br /> ENGINEERING&DESIGN BY CMH DATE 07/09/2019 <br /> Maximum loading on grade beam determined <br /> Case 1: Point Load based on building geometry,and through <br /> conservative assumptions regarding span <br /> 6'-0"Span:(Conc Only) lengths and support walls/foundation.Basically, <br /> Pt Load=15k all concrete walls assumed full tributary span of <br /> "Total load of 2,500 plf floor members and roof members. <br /> conservatively used Design code:IBC 2015 <br /> Roof LL(snow ground):25 psf <br /> Alternative-8'-0"Span: Floor LL:40psf <br /> (Conc w/Channel) I I Floor/Roof DL:15psf <br /> 65%Pt Load Concrete=10.9k X L/2 X 1J2! Wall DL:12pst <br /> 35%Pt Load Steel Channel=5.8k <br /> Roof Trib=0.5'40'max span=20' <br /> Refer to attached calculations for <br /> Floor Trib=0.5'20'max span=10' <br /> analysis. <br /> Typical Fir Ht=10' <br /> Case 2: Uniform Load i • <br /> 6'-0"Span.(Conc Only) <br /> Uniform Load <br /> -DL=1,100plf <br /> LL=800 plf <br /> -LL.(snow)=600 plf <br /> *Total load of 2,500 plf 2'-2" (18" + 8") <br /> conservatively used <br /> Alternative-8'-0"Span: <br /> (Conc w/Channel) <br /> 65%Uniform Load to Concrete <br /> -DL=715 pif <br /> -LL=520 plf <br /> -LL,(snow)=390 plf <br /> Pile and connection requirements per Pile and connection requirements per <br /> 35%Uniform Load to Steel Channel Ram Jack West Rem Jack West <br /> -DL=385 plf <br /> LL=280 plf <br /> LL(snow)=210 plf <br /> Refer to attached calculations for � 6'-0" max <br /> analysis. <br /> Alternative: 8'-0" max w/C6x8.2 Channel <br /> Conclusion: <br /> Based on the loading and geometry of the structure we conclude that the foundation may be stabilized through the use of piles and <br /> connections per Ram Jack West. These are to be attached to the stem-wall(grade-beam)at an on-center(o.c.)spacing no greater <br /> than 6'-0". Alternatively,this spacing can be spread to 8'-0"o.c. if C6x8.2 channels are bolted to the existing foundation(connections <br /> per Ram Jack West),spanning pile-to-pile. <br /> If the 6'-0"o.c.spacing is utilized, L120 recommends steel C-channels or equivalent to be installed in the area where the most <br /> significant settlement has occurred and to be bolted to the existing foundation per Ram Jack West to increase performance and limit <br /> crack propagation. However,as long as loading is lesser than assumed here,the installation of additional channels is more of a <br /> performance enhancing effort. It will help to allocate loading further and provide a more redundant and uniform support system with <br /> less variation in stiffness. <br /> L120 ENGINEERING Si DESIGN <br />