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TSP/ADG <br />June 22, 1990 <br />Architecture • Engineering • Interiors • Planning • Desigr- <br />Energy Consultation • Construction Management • Desgn/Sjild <br />L- <br />Mr. <br />Bert Elliott �N <br />Windfield Homes 2 6 19W <br />12300 Wayzata Boulevard <br />Minnetonka, MN 55343 <br />Re: Edwards Residence <br />Orono, Minnesota <br />TSP/ADG Project No. 89777.1 <br />Dear Bert: <br />The purpose of this letter is to recap the corrective <br />measures taken to stabilize the rear garage foundation <br />wall of Lhe Edwards residence. <br />The foundation wall had bowed out due to unbalanced <br />earth pressure during construction, before the <br />structural floor slab was poured. The garage floor <br />consists of a 611 to 811 thick reinforced concrete slab <br />supported on the end walls of the garage and three (3) <br />intermediate concrete beams poured integrally with the <br />floor slab. The concrete beams are supported on 1611 <br />square block pilasters reinforced with four (4) #6 <br />vertical bars and filled with concrete. Two (2) <br />vertical bars at each pilaster bend into the concrete <br />beam, tying the beam and pilaster together. <br />To correct the rear wall displacement, the interior <br />fill along the wall was removed to a depth of about <br />6'-011. An attempt to push the wall back into place was <br />made. During this straightening procedure, the upper <br />four (4) courses of block separated from the lower <br />wall. The lower twelve (12) courses of block were <br />about 211 out of plumb. The top of the ?1y ster is at <br />the same elevation as the 211 displacement. <br />The purpose of the corrective measures outlined in my <br />letter of June 18, 1.990, was to tie the upper four (4) <br />courses of block into the lower portion of the wall. <br />The bars also tie the block wall into the structural <br />slab. <br />Denver, CO <br />Duluth. MN <br />Miriewpoks• MN <br />Rodo" MN <br />AMW City. SO <br />Sioux Fetls, SD <br />GANW.. WY !n rg411 I it q.nrh Pldv ANnn <br />rii,vq Jy p•.. F,rq.L <br />ShsrkW. Nh 7301 Ohms une. Suite b0. MrMsspoNs, MN 554n(612) !30.0070 FAX t: (612) X1507 <br />