Albums: WA7DUH And WB7CNV Tower Construction

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WA7DUH And WB7CNV Tower Construction

Photo essay of tower project at the station of Linda WB7CNV and Steve WA7DUH. They live just outside of the Richland and West Richland city limits in Benton County. Project is to initially erect a 65 ft guyed tower, but to design it for 75 ft or higher. Benton County has an ordinance controlling "communications facilities" (BCC 11.65) which includes "communication towers and antennas." Many of the requirements are exempted for amateur radio towers and antennas not exceeding 65 ft.
138 images Submitted by WA7DUH Steve St... on Sat, 08/04/2012 - 11:19am
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P1020433.JPG

P1020433.JPG

Guy station base ready to be lowered into a guy station hole. Guy station blocks are buried about 4 feet down, so only half the dirt is hauled away. The pile in the background is what goes back in to cover it up.

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Uploaded on 08/09/2012 - 8:00am by WA7DUH Steve St... 980 visits
P1020402.JPG

P1020402.JPG

The engineered specs call for #7 rebar (7/8"). Are we holding up a 2000 ft TV station antenna?

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Uploaded on 08/04/2012 - 11:39am by WA7DUH Steve St... 980 visits
P1020396.JPG

P1020396.JPG

Diagonal rebar wires are used to keep the grid square.

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Uploaded on 08/04/2012 - 11:39am by WA7DUH Steve St... 952 visits
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P1020431.JPG

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Uploaded on 08/09/2012 - 8:00am by WA7DUH Steve St... 949 visits
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P1020389.JPG

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Uploaded on 08/04/2012 - 6:44pm by WA7DUH Steve St... 943 visits
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P1020427.JPG

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Uploaded on 08/09/2012 - 8:00am by WA7DUH Steve St... 942 visits
P1020391.JPG

P1020391.JPG

The guy rods have 6 x 6 x 1/2 in steel plates to keep them from pulling out of the concrete guy station blocks. Picture shows drilling the 3/4 in holes for the rods. I need a slower turning drill press.

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Uploaded on 08/04/2012 - 6:44pm by WA7DUH Steve St... 937 visits
P1020488.JPG

P1020488.JPG

Originally tried to lift rebar cage from a single point, but it caused the rebar cage to deform. A lifting frame was then built which pulled up vertical instead of an angle.

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Uploaded on 08/14/2012 - 5:23pm by WA7DUH Steve St... 932 visits
P1020414.JPG

P1020414.JPG

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Uploaded on 08/06/2012 - 8:50am by WA7DUH Steve St... 928 visits
P1020413.JPG

P1020413.JPG

Lower painted line marks the height of the concrete.

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Uploaded on 08/06/2012 - 8:50am by WA7DUH Steve St... 910 visits