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NOTCH <br /> ENGINEERING <br /> 1250 d,Mi n Minnesota <br /> Drive <br /> CO. Mound,Minnesota 55364 n <br /> (612)472-5566 J <br /> January 27 , 1993 <br /> Mr. Lyle Oman, Building Official <br /> City of Orono "JAN 29 19� <br /> 1335 South Brown Road <br /> Crystal Bay, Minnesota 55323 <br /> Re : Mr . dike Modares Residence <br /> 2480 Old Beach Road <br /> Orono , Minnesota <br /> Mr . Oman, <br /> Notch Engineering Co . made a field observation at the above <br /> referenced residence on January 26 , 1993 in order to determine <br /> what corrections were required on the modified existing roof <br /> trusses over the new family room. The bottom 2x4 chord of the <br /> roof trusses was changed from a horizontal member to a scissors <br /> type member. Orientated Strand Board (OSB) gussets were added <br /> to one side of the 2x4 truss members . <br /> A metal truss connector should be added at the midspan <br /> intersection of the two 2x4 bottom chord members on the side <br /> opposite the OSB gussets with 1/2" plywood gussets added to the <br /> same side of the truss . The plywood gusset at the peak should <br /> be one piece the full truss depth and 8 ' -0" long centered on <br /> the peak. The plywood gussets at the bearing end of the <br /> trusses should be one piece the full truss depth and 3 ' -0" <br /> long . The metal truss connectors should be capable of <br /> developing 2 . 65 kips of tensile force . The plywood gussets <br /> should be nailed with 8d nails @ 2" o.c . and glued with <br /> construction adhesive . <br /> If you have any questions or comments on this correction please <br /> feel free to contact me . <br /> Sincerely yours , <br /> AZ'2 �Q/ G• ;'ZO <br /> Thomas E. Notch, P.E. <br /> Structural Engineer <br /> cc : file <br /> Mr. Jim Smith @ Smith Construction Co . , Inc . <br /> STRUCTURAL DESIGN SERVICES <br />