I need to pour a base for a TMM-433HD tower but first I need a rebar cage. Do it myself or hire someone and who would I hire? -- - 73 - - Joe W6JWP _______________________________________________ ___
Author: Patrick Greenlee <patrick_g@windstream.net>
Date: Thu, 4 May 2017 13:22:00 -0500
A rebar cage is not rocket surgery or brain science! To give you better advice you need to give some details on the tower to rebar cage connection. There are several methods of connecting the concret
I had a local welding shop make mine, for an old Tri-Ex. The shop used steel rod and welded each junction. My understanding is that if there is a gap in a junction, lightning can arc and cause proble
IMHO, the rebar in steel-reinforced-concrete is there to constrain the concrete under tension. It's not there to anchor the tower. Generally speaking, welding isn't a good idea either, unless rebar g
Hi Joe. I bought an unfinished base from Tashjian a few years ago, because it was going to sit for awhile. It came with the ears with bolt holes already welded to the #8 rebar and the remaining rebar
Author: Patrick Greenlee <patrick_g@windstream.net>
Date: Thu, 4 May 2017 21:21:33 -0500
Yes, my rebar cage was made of weldable rebar and hot dipped galvanized as well. Tashjian does good work. If you check the Tashjian cage to tower interface you will see the most reasonable and practi
Author: Patrick Greenlee <patrick_g@windstream.net>
Date: Thu, 4 May 2017 21:27:29 -0500
One solution for fit I have used was to make a jig by assembling some steel parts to the tower portion of the interface and then using that as a sort of go-no go gauge (transfer standard?) to adjust
IIRC, three fellow DX club members all ordered Tashjian towers and SteppIR antennas at about the same time. I didn't pay close attention but the conversation at the club meetings that I overheard wer
I had a welding shop bend all the hoops for me, then I wired them all together. I then used my tractor to lower the cage into the hole. was not the easiest project but I got it done. Thanks 73 Kent N
Here's what I did. I found a local company that would supply, cut and bend the rebar per the cage design specs. They had the professional machinery to do this properly and accurately. That's the hard
I used big-box store re-bar stock for the cages when I put up my tower 35 years ago, but the quality was probably better then. I tack-welded the cages together, just enough to hold the pieces in plac
I used big-box store re-bar stock for the cages when I put up my tower 35 years ago, but the quality was probably better then. I tack-welded the cages together, just enough to hold the pieces in plac
Your average run of the mill Tashjian tower, say the LM470, 70'tall, four sections. It's rated for 20 sqft wind load at the top of the tower, not at the end of the 5-10 foot underrated mast most hams
All Welding rebar is not for your average Ham Radio doofi. You need the right steel, the right sticks, the right wire/gas if MIG welding, the correct technique (the hard part). A welded connection wh
For my US Tower HDX-589 I had a local company, San Jose Rebar, fabricate the cage using US Tower's foundation design documents. The price was $525 and they loaded the ~ 500 pound cage onto my pickup
Author: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Wed, 10 May 2017 02:23:51 -0400
They don't weld rebar, because, tying the cage together with wire is faster and cheaper. It also allows cheaper material in the rebar. The wiring came about with rebar covering large areas with may c
Author: Patrick Greenlee <patrick_g@windstream.net>
Date: Wed, 10 May 2017 07:06:20 -0500
My store bought rebar cage came welded up using weldable rebar. No tying involved. The three vertical rebars are over an inch in diameter and are skip welded to 3 inch wide 3/8 thick (I think) about
It's not necessary to weld rebar. Concrete is strong under compression, weak under tension. That's why the rebar is positioned near the perimeters of the tower base form, not in the middle or at the