[TowerTalk] Proper bolt sizes for Rohn 25G
Mike
k4gmh at arrl.net
Wed Jan 19 09:53:28 EST 2005
Hello,
Stainless steel bolts and nuts were used on my 130 ft 25 tower when
Hurricane Isabel turned it into a pretzel (80 ft pine tree fell across a
set of guys). Some of the bolts bent, but none sheared. The ones that
bent had ripped the tower leg rather than break. At 09:29 AM 1/19/05, you
wrote:
>Rohn bolts for 25 are fine threaded and are grade 5. However, they usually
>turn to rust in a short period of time.
>
>My advice for guys putting up short tower (40-50) is to pick up galvanized
>bolts at the local hardware store.
>
>I'm no engineer, but the downward force of 200 lb. of tower and some guy
>tension is not going to shear the bolts. I've seen a fair amount
>collapsed tower
>and have never seen any bolt shear.
>
>Bill K4XS
>_______________________________________________
>
>See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
>Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with
>any questions and ask for Sherman, W2FLA.
>
>_______________________________________________
>TowerTalk mailing list
>TowerTalk at contesting.com
>http://lists.contesting.com/mailman/listinfo/towertalk
73,
Mike, K4GMH
More information about the TowerTalk
mailing list