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3 11P <br /> PROJECT NO. SHEET NO. <br /> �,�� S221012-3XR <br /> ice` . <br /> �� 1213 Hoyt Ave Everett WA 98201 <br /> �� PROJECT <br /> LONGITUDE SUBJECT Foundation Stabilization/Jacking <br /> ONE TWENTY° <br /> ENGINEERING&DESIGN BY JT DATE 12/02/2022 <br /> Scope/Objective: <br /> To determine the required pile spacing and geometry to stabilize and lift(where required)the existing structural foundation. These findings have been <br /> based upon the calculated strength of the existing foundation system and the current vertical loading from the existing structure above(based on as-built <br /> assessments). <br /> The R&R Foundation Specialists'(R&R)proposed pile layout can be found in the following pages with structural recommendations based upon the <br /> findings of L120 Engineering&Design. <br /> Note that cosmetic damages to rigid wall coverings/members and siding are expected during a foundation lift. Such cosmetic damages/cracks are to be <br /> repaired by others following the completion of the foundation stabilization and lifting and are not included in the structural scope presented here. <br /> It should be further noted that L120's scope is limited to the perimeter support systems/continuous footings.The interior crawl-space support system for <br /> the first floor shall be installed per R&R. This could include the use of some or all of the following:longer support posts,adjustable post-base hardware, <br /> and/or the addition of taller wood support members. Settlement in these interior support areas shall be monitored and further adjustments shall be made <br /> if necessary. <br /> Structural Summary: <br /> -The foundation of the residence consists of continuous cast-in-place concrete stem wall and concrete strip footings.Below the footings,piles are to be <br /> spaced at a distance no larger than 6'-0"o.c.as indicated on the attached Level Survey. <br /> -End piles shall not exceed the maximum corner offset as specified on the attached Level Survey. <br /> -A maximum allowable loading of 1,930 plf was utilized in this analysis.This was determined through inspection of building geometry and conservative <br /> span/tributary loading assumptions based on standard construction practices <br /> - The following load values represent the maximum expected pile loads for the indicated spacing. R&R to provide pile and equipment assemblies with <br /> capacities equal to or greater than the indicated load values. <br /> Allowable Load Capacity Requirement: <br /> Helical Pile#1-4 @ 6'-0"o.c. 10.0 kip minimum vertical capacity(allowable load) <br /> Helical Pile#5,9 @ 6'-0"o.c. . 11.0 kip minimum vertical capacity(allowable load) <br /> Helical Pile#6-8 @ Posts 11.0 kip minimum vertical capacity(allowable load) <br /> Helical Pile#10 @ 6'-0"o.c. 7.0 kip minimum vertical capacity(allowable load) <br /> Helical Pile#11,14 @ Chimney 13.0 kip minimum vertical capacity(allowable load) <br /> Helical Pile#12-13 @ Chimney 11.0 kip minimum vertical capacity(allowable load) <br /> Concentric Pile#1-2 @ Beam 10.0 kip minimum vertical capacity(allowable load) <br /> Concentric Pile#3 @ 6'-0"o.c. .. 12.0 kip minimum vertical capacity(allowable load) <br /> Note:Refer to the attached General Notes for additional requirements. <br /> - As determined by R&R,the site appears to have no lateral(horizontal)displacements or concerns. As such,the analysis and recommendations <br /> presented in this report have been strictly limited to vertical stabilization/jacking.If lateral movement is observed or expected additional structural analysis <br /> will be required. <br /> - Structural recommendations contained in this package are based on site photographs dated September 29th,2022,provided by R&R.To the <br /> knowledge of L120,a geotechnical investigation was not performed on this site.Consequently,all structural recommendations assume adequate soil <br /> conditions to obtain the required pile capacities. <br /> Please inform L120 of site-specific conditions that were unconsidered by,may conflict with,or otherwise compromise the recommendations contained <br /> within this package,including,but not limited to,water drainage,slope stability,existing structural damage,or existing subsurface obstructions.In this <br /> instance,the structural assumptions,recommendations,and scope for this project will need to be revisited to consider and address the new findings <br /> Refer to the following pages for pile and connection specifications. <br /> L120 ENGINEERING&DESIGN <br />