Rich If you need a final strength of 3500 psi, a 5000 psi mix will reach that strength sooner than will a 3500 psi mix. Like maybe one week instead of 2-3 weeks. If saving cure time is important it m
I am getting ready to put my new M2 OR2800 rotor in my US Tower HDX589. Do I just lay the tower over and pull out the top section to get access to the rotor plate? Is there anything I need to watch o
Congratulations...you'll be even happier when the building inspector signs off the final! 73, Steve N6SJ Hello, My permit was issued late yesterday! I am so happy! -- Thanks, Dave http://www.nk7z.net
I've had an artificial shoulder since my early forties. I stilled climbed my 120' Douglas fir to work on the tower top and beam I had mounted there, until about 10 years ago. My surgeon did a routine
Larry I use a pile of used railroad ties for my cradle under my tilted over HDX-589. I can change the height by adding or subtracting ties, and they are heavy enough to stay put without being fastene
Guys I'm confused...I see this thread about Fulton winches, which is type I have on my US Tower HDX-589 to tilt over the tower. But then I see comments about winches that will be used to raise the to
US Tower recommends a small jack to lift up the back corner and tilt it past the center of gravity. You'll need to fabricate some kind of bracket to fit under the bottom of the tower if you can't fin
The models have changed. The structural engineers follow the standard EIA/TIA-222 which has been updated from "A" through the current "G" over at least 30 years. 222F used the fastest mile of wind to
Dick I recently pulled 13 cables through two 3" conduits, each 165' long. 5 coaxial cables in one conduit, and the other had 4 multipair rotor and control cables and four CAT5e cables. They were stra
Dick On my 3" conduits, I used a spinning reel at one end, with the 6# test fishing line tied onto a Safeway plastic shopping bag. Duct taped the hose from the shop vac to the other end of the condui
Patrick Having erected some large towers in my work on microwave radio sites, I can tell you the correct (NOT cheap) way to design your foundation: First have a soils engineer perform a soils investi
You should not guy a crank-up tower. The guys turn lateral wind pressure into a vertical compression force pushing straight down on the raising cable. On a regular guyed tower, ie. Rohn 45, the whole
Wayne Although my local EIA/TIA-222G wind spec is only 85 mph, I told my planning department that the tower engineer recommended I lower the tower to full nested position whenever the wind was predic
Wayne I have been happy with US Tower's HDX-589. Their structural engineer was very helpful on the phone, answering the many questions I had regarding antenna loading, foundation work, maintenance, e
US Tower provided me a grounding diagram with my tower. It was two 8' ground rods with #2 copper conductors. The local California county building dept. had me add a Ufer ground to by connecting a #2
I have seen many glowing reports about Davis Bury-Flex for this purpose on this reflector. No first-hand experience with it though. 73, Steve N6SJ --Original Message-- From: TowerTalk [mailto:towerta
I have put towers on granite for microwave sites. The foundation term is a "rock anchor", so you need the kind of concrete epoxy approved for rock anchors. Probably need to specify a tensile strength
Wayne Try Adrian McJunkin at Wireless Structures Consulting, Inc. He is in Salem, Oregon. He has lots of experience with towers, both commercial and ham. He used to work for Microflect Corp. designin
Doug When I recently buried 165' conduits for my new tower, I put in three runs of 3" electrical PVC. One run for all the control cables, one for coax only and one for future unforeseen uses. I pulle
I turned my 2-element cubical quad with an AR22 years ago. I had it mounted right on top of the tower with no thrust bearing. The quad had an 8-foot boom and only about 3 1/2 square feet of wind load