HomeMy WebLinkAboutLetter (patio roof data) - 02/02/1967 f
BUILDING SPECALTIES & SUPPLIES
"... UMNICHT APPLEONCWIS.
.,� 54911
S upply C O• PHONE 734 -4544
IP :511 •
Mr. Edward L. Reimer
Building Inspector
Oshkosh, Wisconsin
• •
February 2, 1967
Dear Mr. Reimer:
Enclosed you will find the technical data covering the installation of
Mrs. Emily Peterson's patio roof at 1325 Monroe Street.
On sheet No. 1, we have circled the specifications that comes closest to
our dimensions used on this job. The projection was only 7' 6" and the
spacing of the rafters was 28'k" on center. The load carrying capacity
of this arrangement would compute to a 45# per square foot load with a
safety factor of two times.
The second chart gives us a load support factor for Facia Gutter No. 349
which was used on Mrs. Peterson's job. Our supports are 10' apart and the
span is 7' 6 ". This arrangement computes to a carrying capacity of 38#
per square foot with a safety factor of two times.
On a third enclosure, we have the technical data covering the fibre glass
sheet used on Mrs. Peterson's patio. I have marked the column pertaining
to the glass used. The weight carrying capacity of this fibre glass is
100# per square foot. With our rafters spaced at 28k" on center, this com-
putes out to a load factor of 240# per square foot.
The above computations and specification data are for a wind load or live
load of 20# per square foot.
If live loads in excess of 20# per square foot or a 90 -mile an hour wind
velocity is required, the dead load specifications for the above structo
material has to be reduced. However, I believe that a 20# live load covers
most specifications and the dead load weight requirements under these circum-
stances far exceed the stated Oshkosh City requirements.
Mr. Edward L. Reimer
Page Two
February 2, 1967
May I take this opportunity to thank you very kindly for your patient con-
sideration in this matter, and again apologize for the oversight in our
procedures.
If there are any further questions, please advise.
Very Cordially,
SUMNICHT SUPPLY COMPANY
Victor Sumnicht
VS /ag
Enc.