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Correspondence G EODESIGN z -0) [Th I ' AUG 7 2006 ' August 4, 2006 CITY OF TIGARD Fortis Construction 1705 SW Taylor Street, Suite 200 Portland, Oregon 97205 e Attention: Mr. Rene Gonzalez Geotechnical Letter of Compliance Bridgeport Imaging - MRI 15755 SW Sequoia Parkways /0 Tigard, Oregon GeoDesign Project: FortisCon -2 -02 We are pleased to submit this geotechnical letter of compliance for the helical anchor installation for the Bridgeport Imaging - MRI development located at 15755 SW Sequoia Parkway in Tigard, Oregon. GeoDesign conducted construction observations at the site on May 17, 2006. The project included installation of four helical anchors for additional footing support for the MRI imaging. Our field report is attached for your reference. Construction of the project began in May 2006 and was completed in July 2006. Since the start of construction, GeoDesign observed installation of the anchors, noting depth and torque pounds of force. Within the limits of work observed and reported during the requested site visit and within the area of responsibility of the soil engineer, the above - referenced tasks were completed in general accordance with the plans and specifications and our geotechnical recommendations. 15575 SW Sequoia Pkwy - Suite 100 I Portland, OR 97224 1 Off 503.968.8787 I Fax 503.968.3068 • We appreciate the opportunity to have provided services to you on this project. If you have questions, please call. Sincerely, GeoDesign, Inc. Scott V. Mills, P.E., G.E. Principal Engineer cc: Mr. Peter Shaw, Fortis Construction City of Tigard, Engineering Department SVM:kt:kmg Attachments Two copies submitted Document ID: FortisCon -2 -02- 080406 - geoloc.doc © 2006 GeoDesign, Inc. All rights reserved. G EO DESIG N? 2 FortisCon -2- 02:080406 G E O DESIGN.' FIELD REPORT GDI Project: 1 rt C - Z - 2 Prepared By: Jee_ fie- a..rkp ,v' Project Name: 1 5t .a p, A. / .„ ti ,„� Mg, Date: 5 _ 1 7 -O Location: 1 / S 7 s Ssc) Se/c• a ,ia Pr.Cw47 Report*: / Arrival: f O p Departure: i 5 /5 Weather: 15,,,,,, ,e( 9c. Permit #: Purpose: I Q6 su,-vL 4/6.2./ Acl)rlr er.5 t, "4,7 7J7 /*C " Gi. , . , . �- - .. - / (J ,, ., --€ St A - Z - • L .LL S -a-lid/)e on (.A r,s t,r �. n /2/12.e7_ _ .jO ee, e/ /7/st 5 /- 4' /7n / /V 2nea_/L L!� -t- /9 e0 3/. 5 / _4 �a.:v '4'� / / ut.im"4.9., (See- �1r/ p� ,,, .n ) - , / � p.h p � AV/ Boi./prs (iN.i./ . rr / s,.7. / ,,,, ,v. -./ > S� ccr , _c: // %a�T r t 7 5 k. 's fvt s, ,/ tlLl��'t (1J I^ vW h..1 dy/f� �s/zI/yj l2Q�ils (Ps i) Q sel/ - is 14 •41!)/YLe ,.t , IJa.SL` l/�J7L OdSGr't/a.747,4 S / ,.;e1 n /iJ- C >`Oi7s " 77 - — ^e- , i d _' i ,� s i iii ' _ i / / A / 2n4. 4-, /hr -- z 441.5 A'es4+. r. s i 1 :7/ 1 - - ' 5 / .0 o=e r e. — /, s ' / I 5rY / i�fre T71/e— , .;10 Jo pi' fs.Y. S Q.siiXtt' -J �,rc�/ A45/U17./t /.'d' >12 s / ,b�hc/ ...� 9 /4' , c sg _,t , ,!/pro. 41/7 4fcior ; Alt'2 />r 5 / 5eejrI, (g It 3 it/',di 3 eyA7 /�i4.1,4j . 1 kl / o A le j DepM below C'ctk 4 / Ps': # � 4 1t Pc.: • V - 3 ' 600ps.' p - e(' coo P s, - .A/ %' ti 3 -5 /DOD - - ' /1 ' .11 6 - // " I 000 � - —.r L d�r II 1 s ',/' \ 1ti r 170o- /s ' -2'� 6o0 . 11 1-" ill d r • il (.1, 11000 �s/ � Y -29 9 - P" )0'o ps: Distribution: Z' -3I.5' 1400 ?5'. 8 949 - /300p5; 13 -19 'ZOO ps Attachments: " 54v4 ,.2f) / ___441 T /Jz / /rv�. 'n Reviewed by: This report presents opinions formed as a result of our observation of activities relating to geotechnical engineerin• • environmental service - • ly on the c• • ctor to corn • y with the . lans and specifications throughout the duration of the project irrespective of the presence of our representative. Our work d• include supervision • di •ction of the co ctor, the c. tractor' • employees or agents. Our firm is not responsible for site safety. Signature: _ - _ I Il` , 06 -20 -1994 NOMINAL THEORETICAL RUNG TORQUE OF PLANETARY AUGER DRIVE T ((CID x GEAR PATIO) %`(75.39822368 X DELTA PRESSURE ENERGY STRUCTURES INCORPORATED s4 10046 CHICKASAW HOUSTON TX 77041 (713) 462-3744 MANUFACTURER : MODEL NO. GEAR RATIO V20 61 MOTOR DISP. (CID) : V10 INS' "3`Aj a;,.. . PRESSURE OFFSET 100 PSIG cc* L ,"� 1 ' ,k CORRECTION FACTOR 1 ��.` 10 ,GAUGE CALCULATED READING TORQUE (PSI(;) (FT. LHS ei 100 '0 200 289 300 579 400 869 • 500 1159 600 1449 700 1739 800 2029 900 b 23l loco 260 1100 28/6 _ 1200 3188 1300 3478 1400 3768 1500. 4J58 1600 4348 2700 4638 1800 _ 4928 1900 5218 2000 -fir 5507