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Report (73) Mei o1G - ©® AL�9 M�ORTIERANG ENV GINEERS BUILDING DESIGN• FI �RE PROTECTION CODE CONSULTANT•PLAN CHECKING 1355 OAK STREET, STE#200 CONSTRUCTION INSPECTION EUGENE,OREGON 97401 PHONE:(541)484-9080 January 5,2018 Terra Firma—Emily Singleton 7910 SW Hunziker St. Tigard,OR 97223 RE: 15770 SW 80`h Avenue, Portland,OR 97224 - WO 20786 As requested,special inspection of the installation of Terra Firma helical and push piers was conducted on November 10,2016.The repair involved placement of 3 helical piers and 4 push piers as shown on the plans from this office dated 9/15/2016.The helical piers were installed beyond the minimum installation pressure of 700 psi (Pengo RS-7).The push piers were installed beyond the minimum installation pressure of 2100 psi(3 1/2"RAM). All piers shall be pushed to a minimum depth of 9 feet. Each pier installation is acceptable regarding project requirements. TABLE 1—HELICAL AND PUSH PIER DRIVE LOG DETAILS Plan Pier Number Installation Depth(feet) Installation Pressure(psi) 1 31 2600 2 31 2800 3 31 _.. 2600 4PP 31 2800 5PP 31 2600 6PP 31 2800 7PP 31 2800 The provided special inspection has been performed to meet the requirements of current building code and does not establish a guarantee of the contractor's work. It is the responsibility of the contractor to perform the work in accordance with the provided structural drawings and the specifications of Foundation Supportworks. Thank you for the opportunity to be of service. If you have any questions or concerns regarding this report,feel free to let us know. Sincerely, � PRatzt, t 9.�� G 1N' ' '" roy l@a mortlereng.com �, ,`�E Royal Mortier, PE`2o 8.01.09 1 ! 9:38-08'00' / RE ON r'77 S UIOIIAI.SIC VA W11f f OR VER Ano\O1'ICER TRONIcALLY t>f cJ qr). ,' III\AS141111"1c0 1)0C 1\fl 515 ON! SION Al I,RI.WILL Al MIA IIGALL1` O L MO ' • h`01U1F0011=A IIM1IS!11AvIlIJI A1LI)LLIC IRONIC51LY. I EXPIRES: 12/31 ye I N Royal Mortier,P.E. Royal Mortier, P.E. RM/ja