Reducing wind loads on monopoles to provide increased...

Details Reducing wind loads on monopoles to provide increased... Reducing wind loads on monopoles to provide increased...

2005-05-23

2009-10-27

Wimer, Michael C (Department: 2821)

Communications: radio wave antennas

Antennas

With support for antenna, reflector or director

C343S890000, C052S835000, C052S849000

Reexamination Certificate

active

07609224

ABSTRACT:
Apparatus and methods that reduce wind loads on polygonal monopoles, such as antenna towers and other telecommunication structures, exposed to winds. A multiplicity of connected segmented truncated conical shrouds are attached along at least a portion of the length of a polygonal monopole (telecommunication structure or antenna tower) that surround it. The presence of the multiplicity of segmented conical shrouds changes the profile of the monopole from multi-sided or faceted polygonal to conical. Based on the specifications of the TIA/EIA-222-F which is the governing code for telecommunication structures, the reduction of the wind load on a 12-sided polygonal monopole is on the order of about 42 percent, on a 16-sided polygonal monopole is on the order of about 18 percent, and on a 18-sided polygonal monopole is on the order of about 9 percent.

REFERENCES:
patent: 2016011 (1935-10-01), Kent
patent: 6453636 (2002-09-01), Ritz

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