|To:||Frank Mayer <firstname.lastname@example.org>, towertalk<email@example.com>|
|Subject:||Re: [TowerTalk] Universal Base|
|Date:||Fri, 22 Aug 2003 08:48:29 -0500|
You are correct that there is a reason not to drain the tubes. Alkalinity of the concrete protects steel from corroding. Drainage permits the alkalinity to leach out, after which the steel will corrode.
On the other hand, you don't want water and ionic material to collect in the tubes. Filling them with concrete excludes those materials and provides alkaline protection for the steel. Of course, you can't fill them with concrete containing large rock particles. Use sand based concrete and gently work it into the tube with a rod to get the big air bubbles out.
73 de WOØW
Frank Mayer wrote:
I just purchased a Universal 4-50 and a B-18 base. Does anyone know how far those base rods are to be put into the concrete? There is a washer welded to the rods near the top. The other question I have is that the rods are hollow and will fill with water. I guess I could plug them with a wooden dowel. I think I should keep them completely encased in the concrete and not let them drain into a stone bed below the concrete or some such idea. Any thoughts or experiences with these bases? Frank WY3D _______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
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