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IAAC t1�O,a,,T}ftq <br /> * : A <br /> r i" A'V��L <br /> 414u1aN6 PACIFIC NORTHWEST L' NGTNGLRCNG, INC. <br /> Cornerstone Foundation System LLC February 18, 2020 <br /> 140 Art Mill Lane <br /> Roseburg, OR 97471 <br /> PATENT No.US 9,109,355 B I <br /> Re: Design Criteria Verification <br /> "Smart Foundation"Running Bond 54(SFRB-54),Ledge Stone 60 (SFLS-60), Smooth 60 (SFS- <br /> do), and "Poured in Place' Footing or "Poured Concrete Runners", Pre-cast Concrete PC-48 <br /> Footing (16" x 48" x 2 'h"), Pre-cast Concrete Masonry Unit Footing (CMU 16" x 16" x 4"), <br /> Composite Nerd Footing(1 ''."x 6")or Pressure Treated Lumber Footing(2"x 6"). <br /> Dear Norris, <br /> Al the request of Cornerstone Foundation System LLC, Pacific Northwest Engineering has reviewed the <br /> empirical testing porfortned by Cornerstone Foundation System, as witnessed and documented by Umpqua Testing <br /> Services. It is my conclusion the test results and calculations prove that the "Smart Foundation" Running Bond 54 <br /> (SPRB-54), Ledge Stone 60 (SETS-60),Smooth 60 (SFS-60), and Pre-cast Concrete PC-48 Fooling (16" x 48" x 2 <br /> 1/2"), Pre-cast Concrete Masonry Unit Footing(CMU 16" x 16" x 4"), Composite Board Footing (I la" x 6") or <br /> Pressure Treated Lumber Footing (2" x 6") when used in conjunction with Cornerstone Foundation System is <br /> --- acceptable as a_lateraLd vertical force resisting system for wind zones I, B, and 1A with a "Ca' exposure and a <br /> se[snitc�esign caiago VIT Ss=-384ta 1`O,—R—S 011z7-SqvIltoof-laid-andrup-le-a- <br /> 410 Ft:oof-load-andiipie-a-- --- <br /> 30"lateralsoil bads may be resisted simultaneously.SFRB 54, SFS-60,and SFLS-60 also meet or exceed the design <br /> requirements of"poured in place" or "pouted concrete runners' type foundation from the `Permanent Foundation <br /> Guidebook for manufactured Housing" 4145.1 Rev. 2 and 4150.1. Rev (1996) and also with the manufacturer pier <br /> point layout.The installation also meets or exceeds the design requirements of the HUD 7584 Handbook.This allows <br /> the SFRII-54, SFLS-60 and SFS-60 to meet foundation certification far all HUD, 17-IA and VA lending on <br /> Manufactured I busing provided that the SFRB-54,.SFLS-60 and SFS-60.installation instructions are followed. It also <br /> meets or exceeds the requirements of Section 1333, Chapter 2, Title 15 of the California Administrative Code and <br /> 18551 of the Health and Safety Coda: Cornerstone Foundation System meets or exceeds the Oregon 2010 <br /> Manufactured Dwelling Installation Specialty Code and the Model Manufactured Housing Installation Standards. <br /> Cornerstone Foundation System can also be used in flood hazard areas except with composite hoard Or pressure <br /> treated lumber footing which allows up to 40 lbs roof load and 24"soil back till. <br /> Test results and engineering calculations are available to authorities having jurisdiction when requested. <br /> clgji ID AI <br /> Mark Ellingson,PE "�}~41�4 /rid r<, 1 N[,, 3/ i <br /> Additional information: t ,t • \li" � �t � �3a ��i-z� <br /> Contact Person: Norris Strauch rl > P r r�_ r <br /> Cornerstone Foundation System LLC •/��/ Jr4 r t /REG <br /> Phone: (541) 733-5441 ,1 ' \ A', , my ; <br /> Email cornerstonefomdauonsystem®ayahoo..cain <br /> rreaminaunacoam!xsrorvral roc <br /> ?,3,-b+-`21 E11Y It-:SI-21 <br /> (111,0 <br /> 4242 Silver Falls Dr.N.,Silverton,OR.97381 <br /> ph #(503)873-3184 fax#(503)873.3907 <br /> P.E.tJ 13,676 <br /> Page 5 of 13 <br />