Albums: WA7DUH And WB7CNV Tower Construction

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

P1020579.JPG

One of three ground tower ground rods. The are each connected to a tower leg with both a #4 solid copper wire (per NEC) PLUS a 1 1/2 inch low RF impedance copper strap. Once connections are made, the ground rod is then driven down so it is at least 6 inches below grade.

0 / 0
Uploaded on 09/03/2012 - 6:26pm by admin 572 visits

P1020578.JPG

0 / 0
Uploaded on 09/03/2012 - 6:25pm by admin 517 visits

P1020577.JPG

Trenching between the tower base and the ham shack entrance. The picture doesn't really show the 18% downslope here, and the trencher was stuck and rolling into one of the deck support posts. Come-alongs are keeping the trencher from taking out the deck post plus the tractor is extracting.

0 / 0
Uploaded on 09/03/2012 - 6:25pm by admin 518 visits

P1020508.JPG

WB7CNV (Linda) bows properly to the tower gods.

0 / 0
Uploaded on 08/14/2012 - 6:13pm by WA7DUH Steve St... 533 visits

P1020506.JPG

0 / 0
Uploaded on 08/14/2012 - 5:30pm by WA7DUH Steve St... 573 visits

P1020503.JPG

Guys from Speedy Angeles Concrete, LLC out of Pasco WA do the work. They have the equipment and muscle, and did the job for a good price.

0 / 0
Uploaded on 08/14/2012 - 5:30pm by WA7DUH Steve St... 538 visits

P1020501.JPG

Yea-- this is the way to handle concrete.

0 / 0
Uploaded on 08/14/2012 - 5:30pm by WA7DUH Steve St... 541 visits

P1020505.JPG

Time to pour concrete. The concrete truck can only reach one guy station, so a motorized wheel barrel is used to transport 8 yards of concrete into the main tower and guy station holes.

0 / 0
Uploaded on 08/14/2012 - 5:29pm by WA7DUH Steve St... 580 visits

P1020499.JPG

Adam loves Jessica Kabota.

0 / 0
Uploaded on 08/14/2012 - 5:28pm by WA7DUH Steve St... 745 visits

P1020498.JPG

A better view of the rebar cage.

0 / 0
Uploaded on 08/14/2012 - 5:24pm by WA7DUH Steve St... 665 visits

P1020497.JPG

The tower base hole. 2x4's above the forms hold up and align the top rebar grid. There is also lower grid sitting on concrete blocks. The tower base that will be submerged in concrete floats in the center of both the top and bottom rebar grids. Temporary guy ropes hold the tower in perfect plumb. Grandson Adam approves.

0 / 0
Uploaded on 08/14/2012 - 5:24pm by WA7DUH Steve St... 672 visits

P1020491.JPG

0 / 0
Uploaded on 08/14/2012 - 5:24pm by WA7DUH Steve St... 555 visits

P1020490.JPG

Rebar cage for guy station is lowered onto concrete blocks that elevate up off the bottom.

0 / 0
Uploaded on 08/14/2012 - 5:24pm by WA7DUH Steve St... 654 visits

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.

0 / 0
Uploaded on 08/14/2012 - 5:23pm by WA7DUH Steve St... 927 visits

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.

0 / 0
Uploaded on 08/09/2012 - 8:00am by WA7DUH Steve St... 976 visits

P1020431.JPG

0 / 0
Uploaded on 08/09/2012 - 8:00am by WA7DUH Steve St... 945 visits

P1020430.JPG

0 / 0
Uploaded on 08/09/2012 - 8:00am by WA7DUH Steve St... 880 visits

P1020428.JPG

It's 104 today, so sweat band and wet neck towell in use!

0 / 0
Uploaded on 08/09/2012 - 8:00am by WA7DUH Steve St... 1282 visits

P1020427.JPG

0 / 0
Uploaded on 08/09/2012 - 8:00am by WA7DUH Steve St... 938 visits

P1020425.JPG

This cart has a dump function, which really helps unloading!

0 / 0
Uploaded on 08/09/2012 - 7:59am by WA7DUH Steve St... 1122 visits

P1020424.JPG

Basic process when digging all the holes-- dirt goes in the cart, Linda (WB7CNV) hauls away.

0 / 0
Uploaded on 08/09/2012 - 7:59am by WA7DUH Steve St... 885 visits

P1020423.JPG

0 / 0
Uploaded on 08/09/2012 - 7:59am by WA7DUH Steve St... 895 visits

P1020422.JPG

Trying to fix a cave in. Sandy soil.

0 / 0
Uploaded on 08/09/2012 - 7:59am by WA7DUH Steve St... 999 visits

P1020420.JPG

The break wasn't so bad. The mess was created when the sprinkler controller decided to turn the water on, washed out the far bank and filled the hole. Duhhhh.

0 / 0
Uploaded on 08/09/2012 - 7:59am by WA7DUH Steve St... 1022 visits

P1020419.JPG

Yikes-- hit the sprinkler pipes. Anyone know a good way to find these sub-surface?

0 / 0
Uploaded on 08/09/2012 - 7:59am by WA7DUH Steve St... 979 visits