HomeMy WebLinkAboutRe: proposed log bldg � o�
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9kEs�p4� 2750 Kelley Parkway P.O. Box 66
Orono, MN 55356 Crystal Bay, MN 55323-0066
June 6, 1994
Mr. Bob Hanning, Jr.
4220 Sixth Avenue North
Long Lake, Minnesota 55356
Re: Proposed Log Building
Dear Mr. Hanning:
I apologize for the length of time for plan review on your proposed log shed. This is our busiest
time of year and it was difficult to find the time to do research and make phone calls to try to
determine if your design meets the requirements of the Uniform Building Code. Unfortunately,
I was unable to find any information that would help me in the plan review.
I understand you have constructed these buildings before and are comfortable with the design.
But for the City to issue a building permit, I am required to determine if the building meets all
the requirements of the building code. I attempted to verify structural components by assigning
conservative dimensional lumber factors for allowable loading but there are just too many
unknowns. For instance, the roof is required to support a 30 lb. snow load and a dead load,
which is the roof structure itself and I have no way to know how much that is. Other unknowns
are the allowable loading factors of the members and have they been graded? Knots in
dimensional lumber are typically not a big problem because if you stack up 3-x10s, for instance,
the knots will be in different locations. In a solid log, a bad knot could reduce the strength of
the member to almost nothing. Other unknowns are the connections of the logs in the "truss".
We have no way of determining if they are adequate.
The bottom line is in order to assure the structure stabiliry of the building for you and future
property owners, the City must require that the roof be designed by a licensed structural
engineer. I will put the permit application on hold until I receive the engineering. If you have
any questions, feel free to contact me at my office.
Sincerely,
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L e Oman
Building Official
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cc: Jeanne A. Mabusth, Building & Zoning Adm.
Bruce L. Vang, Field Inspector
Telephone (612) 473-7357 • FAX 473-0510