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Build your monster Tower

Build your monster Tower

Postby zs2cx » Sat Apr 23, 2011 5:40 pm

Now towers dont come cheap, so build your own..
Diy can be hard work, but it all pays off in the end.
here a link to a nice detailed tower 27m high, or just sectional as u please.
Tower DIY
:twisted:
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Re: Build your monster Tower

Postby V51JP » Sat Apr 23, 2011 8:30 pm

wow, great site! i am in the process of researching all kinds of options for a tower :D
it will become a diy project because i love building stuff.
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Re: Build your monster Tower

Postby zs2cx » Sat Apr 23, 2011 11:41 pm

i have done a few .
will search my pics, and post it with some text.
normally we do +_12m to 14m, which is high enough. :roll:
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Re: Build your monster Tower

Postby v51pj » Sun Apr 24, 2011 8:23 am

also in process building own masts here
upgrade existing mast
and then a SAT and EME masts
i got enough space for expansion and no unfriendly neighbour hi!!

used to build a lot on Cape Town but eish material and logistics is nightmare here
but yes it is still cheaper to DIY

get 2 pieces of 5mm - 10mm + wall thickness angle iron
mount parallel on a frame with slots through for adjusting the size - width of the mast
now clamp the pipe - it must be at least 3mm seamless pipe
onto these angle iron frame - make sure it is parallel
now cut your ladder section and weld it in
the first part is done now add the 3rd leg as the other 2 are welded together
and make sure spacing is right
weld in the other pieces
if you can make a bending jig of course the length of 5-10mm rod can be bend in a zigzag format and then just welded in

there is your first 6m section finished
add some spacers/tubing onto the side of the mast at each end and you can now join the mast sections
and dont forget to add the anchor points at the top of each section

cut a base plate and there you are

if you want to make a crank up tower remember the sections must fit into each other
therefore you can adjust the angle iron spacing for each section
add the pull up points and where the pulley is fitted etc and you got your own crank up tower

have it galvanized and you are safe for the future

now comes the concrete works

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Re: Build your monster Tower

Postby zs2cx » Tue May 03, 2011 7:53 am

good one, Pieter
may i just add,
watch out for metal stresses as u weld the tower will bend by itself, so carefull planning ,layout and tacking is required, making sure the first ladder stay straight, it would normally wnat to bend outwards as we are welding on the inside, this causes the tower to expand on the inside, making the welding side longer by a couple mm. :o
keep it cool :mrgreen:
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Re: Build your monster Tower

Postby v51pj » Tue May 03, 2011 8:55 am

yes metal stress
that is why i was thinking clamping it into this thick angle iron that is preset - straight / parallell with the other angle iron onto a steel frame - something like a welding jig but adjustable width for different sizes of masts
that will then tend to hold it still
and straight and cool it down as it is taking away the heat into this angle iron jig frame
thanks for the early warning

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Re: Build your monster Tower

Postby zs2cx » Tue May 03, 2011 8:05 pm

pieter
u need to pre stress a long lenght of material to a certain amaount, so u bend the steel slightly and start welding as u progress the steel pulls straight, most of the firetrucks have a long ladder and i saw a movie where they make the ladder, and tell u how the metal behaves and why we pre bend it, so a jig might help but not much, thats also the reason for 3m section towers. :geek:
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