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612 827 0805, MATTSON MACDONAL 01:03:05 p.m. 12-23-2005 1 /5 <br /> Mattson Basset Creek Business Center COPY <br /> Macdonald 901 North 3rd Street, #100 <br /> EEL Young Minneapolis, MN 55401 <br /> structural 612-827-7825 voice <br /> engineers 612-827-0805 fax <br /> Date: December 23, 2005 <br /> To: Jumano Construction <br /> 8700 W. 3e St. <br /> Suite 6E <br /> St. Louis Park, MN 55426 <br /> Attn: Judd <br /> From: Eric Bunkers <br /> Project: Gill Residence <br /> 1145 Wyndmere Rd. <br /> Orono, MN <br /> Proj. No: 05600 <br /> Subject: Floor sag repair <br /> Dear Judd: <br /> As requested, I designed new structural members for the above referenced project. I have designed the new <br /> members using a roof and floor dead load of 15 psf, a snow load of 35 psf,and 40 psf floor live load in <br /> accordance with the Minnesota State Building Code. My work only includes designing the new members <br /> and analyzing certain existing members when affected by the proposed repair as shown at the above <br /> reference project and is based on drawings provided by you, from our conversations and my site visits. <br /> Attached are four sheets with 'redlined"framing notes and details showing the new members and <br /> connections. All framing shall be shored and temporarily braced as required by the contractor and all <br /> minimum nailing shall be in accordance with IBC Table 2304.9.1. Lumber shall be#2 SPF and engineered <br /> lumber to have Fb=2950 psi with E=2.0. My calculations assume all lumber is of,good quality and does <br /> not have large splits and checks and shall be visually inspected by the contractor at the time of construction. <br /> Steel wide flange beams shall meet ASTM A36 as a minimum. <br /> Care shall be taken if floor sag correction is to take place to minimize finish cracking and movements. Any <br /> jacking of the existing framing shall occur slowly at long intervals to minimize finish and structural distress. <br /> When installed as indicated above,the new framing members shown on the attached sheets shall support <br /> the loads as required in accordance with the Minnesota State Building Code. If you have any questions or <br /> concerns, please feel free to contact me. <br /> Sincerely, <br /> Mattson Macdonald Young,Inc. <br /> CIT' <br /> Eric M. Bunkers, P.E. i rCTOrr____-- " <br /> MN Reg.Num.26490 ZZ.-Ob_._. -------.,- <br /> n cade- <br /> j-�F_�d :c.,;a F;..�'1�' ��� a•, `:`�i'i�Al"ALL TiM2S <br />