ANALYSIS OF RADIO COMMUNICATION TOWERS SUBJECTED TO WIND, ICE AND SEISMIC LOADINGS

asim99 · 12-31-2012, 02:15 AM

The Missouri Department of Transportation radio communication tower network is currently out of date with respect to current tower building codes. The network was created in the 1950s and 1906s as part of the U.S. military civil defense system. The network was designed using the TIA-222-C (1976) or earlier. Today the current code in practice is the TIA-222-F (1996) code. There is a need to assess the condition of the towers in the network and also to determine if they are up to date with current code. A condition indexing (CI) system is a reliable way to assess this problem. However, an analytical method of determining the input parameters for the CI needs to be determined.
Therefore the objective of this research is to develop a systematic evaluation and assessment method that could provide the necessary information for the repair and maintenance of the tower network.
Two towers were selected for this project to act as model towers. One tower is guyed, the Taum Sauk tower, and the other is freestanding, Kansas City tower. Both towers are analyzed using the TIA-222-F for wind and ice loadings. The Taum Sauk tower is then analyzed for seismic loading. Also a parametric study to determine the effects of deterioration of tower components on the tower as a whole is completed on the Taum Sauk tower.
The controlling components of the Kansas city tower were found to be the diagonal bracings. The critical bracings were found to be at 88.9% of their maximum capacity. The maximum capacities of the other components of the tower were found not
to exceed 51.1% capacity. Therefore, the tower passes for the current code.

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LiviuM · 02-27-2013, 11:07 PM

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TAFATNEB · 11-18-2013, 08:06 PM

ANALYSIS OF RADIO COMMUNICATION TOWERS SUBJECTED TO WIND, ICE AND SEISMIC LOADINGS

The Missouri Department of Transportation radio communication tower network is currently out of date with respect to current tower building codes. The network was created in the 1950s and 1906s as part of the U.S. military civil defense system. The network was designed using the TIA-222-C (1976) or earlier. Today the current code in practice is the TIA-222-F (1996) code. There is a need to assess the condition of the towers in the network and also to determine if they are up to date with current code. A condition indexing (CI) system is a reliable way to assess this problem. However, an analytical method of determining the input parameters for the CI needs to be determined. Therefore the objective of this research is to develop a systematic evaluation and assessment method that could provide the necessary information for the repair and maintenance of the tower network. Two towers were selected for this project to act as model towers. One tower is guyed, the Taum Sauk tower, and the other is freestanding, Kansas City tower. Both towers are analyzed using the TIA-222-F for wind and ice loadings. The Taum Sauk tower is then analyzed for seismic loading. Also a parametric study to determine the effects of deterioration of tower components on the tower as a whole is completed on the Taum Sauk tower.

Code:
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andersen3 · (This post was last modified: 11-20-2013, 07:12 AM by andersen3.)

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TAFATNEB · 04-17-2014, 10:07 AM

ANALYSIS OF RADIO COMMUNICATION TOWERS SUBJECTED TO WIND, ICE AND SEISMIC LOADINGS

The Missouri Department of Transportation radio communication tower network is currently out of date with respect to current tower building codes. The network was
created in the 1950s and 1906s as part of the U.S. military civil defense system. The network was designed using the TIA-222-C (1976) or earlier. Today the current code in
practice is the TIA-222-F (1996) code. There is a need to assess the condition of the towers in the network and also to determine if they are up to date with current code. A
condition indexing (CI) system is a reliable way to assess this problem. However, an analytical method of determining the input parameters for the CI needs to be determined.
Therefore the objective of this research is to develop a systematic evaluation and assessment method that could provide the necessary information for the repair and
maintenance of the tower network.
Two towers were selected for this project to act as model towers. One tower is guyed, the Taum Sauk tower, and the other is freestanding, Kansas City tower. Both
towers are analyzed using the TIA-222-F for wind and ice loadings. The Taum Sauk tower is then analyzed for seismic loading. Also a parametric study to determine the
effects of deterioration of tower components on the tower as a whole is completed on the
Taum Sauk tower.

Code:
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