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7 of 21 <br /> A / PROJECT NO. SHEET NO. <br /> 1111\ <br /> �� S 180907-1 <br /> ��� 7215 Juniper Dr, Everett, WA <br /> �� PROJECT . P <br /> LONGITUDE SUBJECT Foundation Stabilization/Jacking <br /> ONE TWENTY° <br /> ENGINEERING&DESIGN BY CMH _--__-_- DATE 09/11/18 <br /> Maximum loading on grade beam determined <br /> based on building geometry,and through <br /> conservative assumptions regarding span <br /> lengths and support walls/foundation.Basically, <br /> all concrete walls assumed full tributary span o> <br /> floor members and roof members. <br /> Design code:IBC 2015 <br /> Case 1: Point Load \ / Roof LL(snow):25 psf <br /> Floor LL:40psf <br /> 8'-0"Span: `� <br /> Floor/Roof DL:15psf <br /> Pt Load=12k <br /> v2 L/2 Wall DL: 10psf <br /> Refer to attached calculations for Roof Trib=0.5`40'max span=20' <br /> analysis. Floor Trib=0.5"20'max span=10' <br /> Case 2: Uniform Load Note:Total load of 1500plf <br /> • 1 • , • conservatively used. <br /> 8'-0"Span: <br /> Uniform Load <br /> -DL=550 plf <br /> -LL=400pif ^- <br /> - LL(snow)=500 plf <br /> Refer to attached calculations for 21-2" (18" + 8") <br /> analysis. <br /> i <br /> _ Pile and connection requirements per Pile and connection requirements per <br /> Ram Jack West l Ram Jack West <br /> 8'-0" Max � <br /> Conclusion: <br /> Based on the structure's loading and geometry, L120 concludes that the existing foundation may be stabilized through the use of <br /> piles and connections per Ram Jack West, provided the load to each pile is less than or equal to the values specified. The piles are <br /> to be attached to the stem-wall(grade-beam) at an on-center spacing no greater than 8'-0 <br /> L120 recommends steel C-channels or equivalent to be installed in the area where the most significant settlement has occurred and <br /> to be bolted to the existing foundation per Ram Jack West to increase performance and limit crack propagation. However,as long <br /> as loading is lesser than assumed here,the installation of additional channels is more of a performance enhancing effort. It will <br /> help to allocate loading further and provide a more redundant and uniform support system with less variation in stiffness. <br /> L120 ENGINEERING&DESIGN <br />