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Lyle Oman <br /> From: Tracy Engnes [tracyengnes@hotmail.com] <br /> Sent: Tuesday, February 28, 2006 8:38 AM <br /> To: Lyle Oman <br /> Cc: yeriganco@aol.com <br /> Subject: Hamm Carriage House - Foundation Design Information <br /> Mr. Oman, <br /> Dennis Jakubic with Yerigan Construction requested that I forward the <br /> following e-mail to you which includes design information for the masonry <br /> wall and footing reinforcement. <br /> If you have any questions, please let me know. <br /> Tracy L. Engnes <br /> Project Structural Engineer <br /> Van Sickle, Allen & Associates, Inc. <br /> 2955 Xenium Lane North <br /> Suite 10 <br /> Plymouth, MN 55441 <br /> Ph: 763-486-2942 (direct) <br /> Dennis, <br /> I have reviewed the design requirements for the new masonry foundation walls <br /> and continuous wall footings for the expansion to the Hamm Carriage House. <br /> The size and reinforcing requirements are as follows: <br /> Masonry Foundation Walls - 12" masonry reinforced with #4 @ 24" o.c. Continuous Wall <br /> Footings - 1 '-8" wide x 1'-0" deep reinforced with (2) -#4 <br /> continous - centered beneath 12" masonry foundation wall. <br /> These recommendations are based on a minimum allowable soil bearing pressure <br /> of 2, 000 psf and a soil lateral load of 45 psf/ft of depth (according to <br /> recommended design parameters provided in the IBC) . To my knowledge, a <br /> soils investigation has not been performed for this site and a soil <br /> classification has not been provided. Has the building official determined <br /> that a soils investigation will not be required due to the availability of <br /> satisfactory data from adjacent areas? I would recommend that the above <br /> design values be verified prior to the concrete pour by a licensed <br /> geotechnical engineer who is familiar with the soil composition in the area; <br /> otherwise Yerigan Construction is assuming any risk involved by proceeding <br /> without verification. <br /> Also, care should be taken not to disturb the adjacent existing footings for <br /> the structure. New wall footings should bear at the same depth as the <br /> existing foundation and be stepped up or down, as necessary, to the <br /> code-required frost depth of 42 inches. The new and existing footings <br /> should be tied together by the following method: drill and epoxy (2) -#4 x <br /> 2'-6" dowels into the existing footing (6" min. embed) with Hilti HIT HY150 <br /> system or an approved equal to match new continuous wall footing <br /> reinforcement. <br /> If you have any questions or require additional information, please don't <br /> hesitate to give me a call. If you have a schedule established for this <br /> project, please forward a copy for our reference. We will be able to more <br /> closely coordinate our design efforts if we know the construction schedule <br /> that you are working within. <br /> Thanks! <br /> Tracy L. Engnes <br /> 1 <br />