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f*r11.1 HWAGEOSCIENCES INC. <br /> Y�� �;,.o�iciini;�ifFn�in;.'riri,� • Ilydr,r����l���r • ��i��rnriron�nnn�il5nriit> • !n>pirti�ntc� 'lrs�in� <br /> �yOz-o �. G <br /> February 19, 2004 <br /> HVv:A Project No. 2003 1 SO 21 <br /> Don and Jan Linde J�� 3y� S�o� , <br /> U17 England Avenue / � <br /> verett, Wash`gcon 982�3 { <br /> I <br /> f <br /> Attention: Mr. Don Linde <br /> SubJecL INSPECTIOV OF I�STALLATION OF CILa�CE ANCHORS <br /> Dear Mr. Linde: <br /> This letter is to confirm that we were on site part time during installation of the A B � <br /> Chance Anchors, and to inform you tha[ they were installed in accordance wiih our � <br /> recommenda:ions. <br /> Susan Robar;e, of our firm was on site Thursday, February 1?, 2004 from l 1:00 to q <br /> ll:30Aiv1 to verify that the anchors going in the ground were the correct ones, and ro � <br /> watch the first anchor installed to refusal with a low torque dri11. She was back on the ` <br /> site from 320 to 10:�0 on Friday, February 13, 2004 to observe as each one �vas driven � <br /> to refusal and to record their final depths. ; <br /> The anchors are laid out as shown in our report dated Jan 20, 3004. The anchors are ,� <br /> numbered from I to 10 �vith i being the eastern pile on the north side of the huuse, and � <br /> counting sequentially to number 10 �vhich is the eastern pile on the south end of the <br /> house (See Fi;ure 1). F�ch anchor consists of a lead section with an 3-inch, a 10-inch, ;; <br /> and a 13-inch helix (P1�0-03�6). Five-foot extensions (PI50-0212) were added as � <br /> needed to each one, and drillea in until the steel started to twist. The depths of piles 1 � <br /> throuch l0 below the existing `round surface are: 9'/, 13, 13%, 14!5, l6, 14, 16, 16, l3'/, <br /> 13'/-feet below the ground surface respectively. Based on the soil explorations � <br /> performed prior to constniction, these anchors are in the bearin, layer. � <br /> Chance has published that the minimum ul[imate torque capacity in a LS-inch shafr iy_3�- �i�,�`,L����v ' <br /> �.:OOft-lbs. This is the torque at which the steel stans to liave permanent torsional s�.i�,i��� <br /> Lvnmvood,WA 98036.595" <br /> Til: d25J74.0106 <br /> Faz: �25.i74?i14 <br /> www.hw�Reo rnm.cam <br /> ��3 <br />