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�� J-l:10-U2 ,�- <br />t��t���,,,,t-� �, iyso r^I <br />r <br />The Rainier Fund �' <br />P.O. 4085 <br />$ellewe, Washingeon 98009 <br />Attn: Mr. C; •rles E. Hart <br />Vice-President <br />�� <br />cc: Larry Wibery <br />���ick Narnish, <br />SOqA�@S If'1C. <br />ENGINEERING <br />RECEIVED <br />Fc s 1 z 1y�u <br />Re: Reroutin�; of 48 inch diametcr pipe at <br />Yroposed College Yl:��a <br />Jafco Storc <br />tiveret[, Washington <br />Gentlemen: <br />ILence Mueller & qasc� <br />� � <br />�G 5�� ��` �b�' <br />�� �� <br />�keP� b1ar� <br />On February 1, 1980 we were reyuested by Mr. Jin� Anderberg of <br />Stepan and Associates to comment on [lie disposition a 48 inch <br />concrete sewer pipe presently tr�versing the center of the <br />referenced site fro� northwest to southeast. Mr. Anderberg <br />indica[ed [his sewer line would be rerou[ed around the fuCure <br />Uuilding to facilitate access for maintenance. <br />}lis present concern is wi[h the portion of pipe to be abandoned <br />beneath the proposed store. Freliminary altcrnatives were to <br />ei[her remove th� pipe along thi.s portion or backfill with a <br />sand and wa[er slurry. Because of the relatively deep excavation <br />which would be reyui.red to remove the pipe, the backfill <br />alternative was selected. However, Mr. Anderbcrg indicated <br />several bids for this werk tiave heen cociaidered and the costs <br />appcar [o be approximateiy $]O,OCO, ln ordcr Co reduce the <br />cos� of this effort, hc is propos+ng to ��liminate backfilling <br />of the pipe and cap each �nd. 'Phe con:�ern with this proposal <br />is whethcr or not the building foundation hould be adversely <br />affected. ` <br />Ke unders[and Che 360 foo[ lon, concrete pipe is located at <br />lcas[ 21 feet below buiidin� grade. The pipeline croases the <br />northwes[ and southeast wal.l at right anLles. In our opinion, <br />[he loads imposed on the pipr. by thc new building would be <br />substantially dissirated at [hat depth. Also because of the <br />burial depth, the potential for undcrminin� support through <br />mi£•,ration of soils into [he pipe should be minimal. Therefore, <br />it is our opinion, tha[ eliminatin� Che backfillinp, of thc pipe <br />and cappin�; each end would not adversely affect the building <br />foundation. <br />We app::eciate che opportuni[y to be of service to you. <br />lf y�u have further quescions, pleasc c�ll at your carliesC <br />convenience. <br />��EcrivFo <br />FEQ 1 1 1980 <br />DESiGN SERVICE BUiLDING, 1910 fAIRy1EW AVENi iE FAST, SEATTLE. �'dASH 9810?. (��) J1� 95�0 <br />WASHINGtON PUZA. SUITE 1695, TALOMI., WASH. 9P404. 12061 572 ,156 <br />. Toll frss From Sealtle In T�rome, B)P-M7� <br />