reply to post by highfreq
I have a profesional grade welder.
As i mentioned earlier i have to follow some rules and thus the 100 ft height.
Unfortunately i do have a very good grasp of what such a height means.
This is the reason i resolved in posting herein. No offence taken anyway.
I suppose i will have to control or extend the budget to the lowest possible amount for acomplishing the task at hand sucessfully...
Material wise i was thinking 2'' pipes of 3mm thickness and 5m length.
6 of them would make the total of 30m.
My plan was to use threaded piping connections to thread them together while having welded 3 hooks on each connection to attach the guy wires at 4
heights of subsequent conections. 5m, 10m, 15m, 20m, 25m.
Foundation wise i was thinking of a plate anchored in a reinforced mass concrete foundation within the soil of about 1.35 m³ volume with dimensions
of 1.5m x 1.5m x 0.60m. i guess that would be enough for a foundation, weighting at about 3.24 tons.
Welded to that plate anchored in the mass foundation i was thinking to have a pin joint that would support my mast.
(this would enable me to erect it in one piece without having to use a crane.-just three farm tractors, two pulling the mast to a vertical stant and
one keeping it back from overturning to the two tractors vector direction. To help visualise this consider that the guy wires follow a triangular
Subsiquently the structure will come together on site where space is not a problem, and then erected in one piece.
One of my concerns is what you mentioned:
I suppose if you sectioned it off and constructed it on site this wouldn't be a great concern, but then you run into engineering issues with the
connection points being strong enough to handle the load appropriately.
However i suppose that after all with carefull selection of the piping parts that should not be a problem...
Do you think it will?
As i mentioned farming tractors is what i plan to use for erection since a crane would cost far too much for this project.
The guy wires in my oppinion could be anchored to another 3 mass reinforced concrete foundations of about 0.4m depth x 1 m wide x 1m long and a
volume of 0.4 m³. This should give a weight for each anchor foundation of about 0.96 tons, almost a ton.
How big of a concrete pad depends a lot on frost points in your area as well a the total load.
Unfortunately all these dimensions are just guesses as to fulfilling my design requirements since i dont know about load criteria to the specific
design. There is no frost forming in the area at any time of the year.
Anchoring points on the mast and distance from the mast will most likely depend on design and material of the mast.
I described what i intend to be my anchoring points on the mast previously. However i do not have a clue as to the distance the 3 anchors should be
from the mast. Any clues? If none i will propably use a half the height radious of 15m....
You were helpfull but unfortunately i havent come to a conclusion yet.
ANY HELP IS WELCOME !