I'm finally getting some dirt work done in the next day or two at my new place which will include holes/concrete for my 45g tower. I plan on using a pier pin install, so does it matter if the base is
Not an expert either. I think this has come up before. As long as you have the same amount of concrete or more at the describe depth you should be ok. Mike W0MU J6/W0MU November 21 - December 1 2011
No. I see the occasional self supporting cell tower that has a round base and some of those are pretty deep. Typically contractors use straight sided, metal forms which is probably one of the reasons
I asked the same question of a well known Professional Engineer a couple of years ago. His answer was quite simple and made a lot of sense ... the round base can be used instead of a square one if th
JUST THINK ABOUT WHEN U NEED TO MOW THE LAWN AROUND THE TOWER!! its easy to cut around a square form "but" a round one not so easy. my 2 bob's worth DE VK3PA _________________________________________
Does this apply to a guyed tower? I can understand big overturning forces in a self-supporter, but most of the forces acting on a guyed tower base are vertical, aren't they? 73, Pete N4ZR The World C
When you place a 45G concrete base plate with the pier pin centered over an 18"radius pier, two corners will overhang. The plate hole is centered with the legs, not centered with the plate ;-)) That'
The current Rohn 25G/45G brochures actually show round bases but the notes allow for a square base. The GSR (solid rod rails) brochure shows a square base with a tower piece embedded in the concrete
Our discussion was about towers in general ... there was no mention of guyed vs. self-supporting or single pier vs. multiple pier (e.g., Rohn SSV with its wide base). In any case, looking at the Roh
The above ground "cap" could still be square. 73, Mike NF4L _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting
new place which will include holes/concrete for my 45g tower. square or round? The rohn book calls for a 2' 6" square hole 4' deep (I'm designing the tower based on 90mhp winds with a height of 120')
And after that 36" auger wiggles a little, you will have a 42" hole. You need a form above ground level, make it square. Don't forget the second hole, for all the extra dirt. ________________________
Sorry Joe, but Rohn 45G and "pier pin" adds up to a guyed tower to me. 73, Pete N4ZR The World Contest Station Database, updated daily at www.conteststations.com The Reverse Beacon Network at http://
The discussion I had with the PE was about tower bases in general. In *that* discussion we did not differentiate. However, since the Rohn documentation states that the CB1G *must* be square, there m
It's an interesting question. I have been told, by an engineer with considerable tower modeling experience, that the BPC25G is a weakness in the Rohn pier pin setup for 25/45G, because friction betwe