HARBORVIEW CENTER �
CIVIL •
LAND PLANNING •
��.`��e�� . ENVI RONMENTAL•
"7"" ""'7 ���Q ��' TRANSPORTATION •
April 3, 2003
Revised April 7, 2003
Mr. Jay Goulde
Outdoor Arts Foundation
P.O. Box 323
Safety Harbor, Florida 34695-0323
Reference: Flexible Mural Attachment to Harborview Center
Subject: Recommendations for Attaching the Mural
Dear Mr. Goulde:
I reviewed the documents and materials furnished at our meeting on
March 20, 2003. The flexible mesh, manufactured by Verseidag Indutex, is
suitable for the mural. It is lightweight, strong, flame retardant, and allows
adequate air flow to reduce wind resistance.
The length of the mural should be cut such that the center of the
grommets aligns with the center of the columns. The proposed 32' height should
be adjusted to the distance between the bar supports behind the columns that
attach them to the building. The cable passing through the grommets at the top
of the mural should encircle the column above the bar support. Similarly, the
cable passing through the bottom grommets should encircle the column below
the bar support. This configuration allows the tension in the fabric to be taken up
by the bar support.
The product literature indicates the fabric has 66 pounds of tear strength.
Th�reior��, il�llT�ti OI` �il�iCi� iii� riiUh"di 1iVitf� i'iG iilviC �eiai� iv �luui�u� iciioiv^i
either horizontally or vertically. This will provide tension and an adequate safety
factor.
The cable can be secured with wire rope clips properly sized to match the
cable used. The cable 1 saw would require 3/16" clips. The four corners of the
mural need to be secured as described. Intermediate attachments may be
added at each of the four interior columns as required to keep the fabric tight and
more uniformly distribute the wind load.
601 CLEVELAND STREET, SUITE 930
�LEARWATER, FLORIDA 33755
N ESADMI N@MI N DS PRI NG.COM
NESTE�HC�MINDSPRING.COM
727 • 443 • 2869 FAX 727 • 446 • 8036
_ _ __
' Mr. Jay Goulde
Mural at Harborview Center
Page 2.
Wind load forces, superimposed onto the mural and columns by the
movement of an air mass at 130 mph velocity, were checked by the provisions of
Section 1205.2 of the SBBCI. Even allowing for no air flow through the mesh,
the 130 mph wind pressure does not exceed the strength of the fabric with the
configuration proposed. The bending stress acting on two columns only, from the
wind pressure on the mural (in a hurricane there would be more acting on the
columns than just the mural), will not exceed the allowable stress for the two
columns. The calculated safety factor is huge. If intermediate columns are also
used to attach and support the mural, the safety factor increases.
However, it is also my opinion that if a hurricane threatens the Clearwater
area, the mural should be taken down ahead of its arrival.
Good Luck with your project. Thank you for the opportunity to help;
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