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Author Topic: Bottom of Tower hole  (Read 2086 times)
KE4XJ
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Posts: 67




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« Reply #15 on: May 20, 2016, 07:27:29 AM »

Phillip,

Thanks for your good advice. As soon as the hole is dug, we will be placing a Sonotube form in the hole, by lowering it in with the backhoe and then bracing it in the veritcal position for the concrete pour. The anchor bolts/threaded rods will be leveled with upper and lower templates (see Heights Towers web site) and then braced in the vertical as well. Pour will be a few days later, followed by back filling as soon as the concrete has set and the cure has begun. The backfill will be tamped (compacted) in layers with sand and gravel.

Brad
KE4XJ
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LA9XNA
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Posts: 161




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« Reply #16 on: May 22, 2016, 06:30:45 AM »

At our club station we made a slab of about 1,5m x 1,5m and 3-4meters deep.
The tower is a tiltover with about 18m high and a stepir 4 element wit 30/40m kit.
It is windy at our club station but the tower is still satanding strong after more than 10 years.

About covering the rebar the minimum is 5 cm / 2" here in Norway.
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