Dear All, I'm trying to elevate my very low dipole that is fed with balanced line. I'm trying to go with a non-metallic support so the balanced line does not interact. My dipole is currently 18' in t
I think setting timber in concrete is a bad idea. Water can get in around the timber and cause rot. Why not set a length of steel I-beam or similar into the concrete, and bolt the timber to that ? 73
Hello Derek Finally a subject I have experience with! I live in the country ie boonies and we do this all the time to hang gates off of in the fences around the pasture. We use treated 4X4's around h
Derek: the lumber on the concrete is necesary ? i remember the mail boxes use a similar 4x4 and can be mounted using this anchor, is very simple, is like a nail on the bottom and a simple mount where
Dig a 4X4X4 foot hole - stand up an 8 foot long, 6" dia., steel pipe in the hole and brace it - fill the pipe with sand to ground level then pour the concrete into the hole- after the concrete sets,
Derek I would not use concrete to stabilize the 4x4s. Use pressure treated timbers (PT) with pee gravel. This is how many decks are built. Dig a hole to depth, 4' sound like more than enough. Put a c
Make that pea gravel .. Sorry about that . I will have a word with my spell checker mike _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "
I would think the on-concrete mount would work but you'll have to guy the 4x4. Losing 4' of the height is not too big a deal for the theoretical performance gain or loss you will experience. Putting
Higher is better. The current elevation (18 feet) is probably sufficient for operation on 20 meters. Moving up to 36 feet will improve operation on 40 meters significantly. I like to have a dipole up
My barn is built on 4X6 20-foot Wolmanized pine posts set in concrete to a depth of 4 feet. It was erected in 1977. There is no evidence of rot. Keith NM5G I think setting timber in concrete is a bad
i wpi;d bet the thing you was talking about would not hold a 20 ft 4 by for butt a steel channel would or 2 steel channels thay mite go 2-3-4 ft in the cocreate and 2-3-4 ft high and sandwich the 3 b
This is because concrete over 4000psi is supposed to be waterproof. Low grade concrete will wick water, but the higher grades will not. Bridge supports don't wick water, and they are concrete. Either
The EPA recently limited the acceptable uses for CCA-treated wood and it is getting increasingly hard to find (and I suspect the price is reflecting this). Bob, N7XY -- Bob Nielsen, N7XY n7xy (at) n7
Where I live there are many barns made exactly this way. Pressure treated 4X4s 4' deep and a 3 bag mix seems to be the standard. Some of these barns are huge and many have been up for many many years
Pressure standard. Some of years. Should A barn (or deck or whatever) doesn't put any significant side load on the wood. Buildings and other structures (outside of tornados and hurricanes) basically
I have used this sytem for years, it works great. No need for concrete, just tamp loose moist dirt very tightly around the 4X in the hole. It will be very tight and last as long as you want to use it