Towertalk
[Top] [All Lists]

## [TowerTalk] Substitute thicker Phillystran?

 To: [TowerTalk] Substitute thicker Phillystran? mikerauh@ic.org (Michael Rauh) Tue, 17 Jul 2001 12:10:34 -0400
 ```Hello All, My tower plans call for 11,200 lb Phillystran for the top guys. I've been offered 27,000 lb Philly. Questions: 1. Do I need to pretension the 27,000 lb breaking strength Phillystran to 2,700 lbs (10%)? 2. This will add 3X 0.707 X 1600 = 3400 lbs of base reaction to my system, right? (Top guy is at 45 degrees). 3. The tower is 120 feet of Rohn 55G. There are tree tiers of guys. I calculate the base reaction to be about 7500 lbs. So if I increase to 10,900 lbs what happens? The 55G is undoubtedly good for the extra load at the base, but do I need to beef up the lower guys to hold the tower in column with the extra load? Or to put it another way, how does one decide how many tiers of guy are needed and what the loads on the lower guys will be? Can anyone out there help me understand how this works? Mike Rauh, NV7X _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com List Sponsor: Are you thinking about installing a tower this summer? Call us for information on our fabulous Trylon Titan self-supporting towers - up to 96-feet for less than \$2000! at 888-833-3104 www.ChampionRadio.com ----- FAQ on WWW: http://www.contesting.com/FAQ/towertalk Submissions: towertalk@contesting.com Administrative requests: towertalk-REQUEST@contesting.com Problems: owner-towertalk@contesting.com ```
 Current Thread [TowerTalk] Substitute thicker Phillystran?, Michael Rauh <= [TowerTalk] Substitute thicker Phillystran?, Hank Lonberg [TowerTalk] Substitute thicker Phillystran?, Pete Smith [TowerTalk] Substitute thicker Phillystran?, Hank Lonberg [TowerTalk] Substitute thicker Phillystran?, Michael Rauh [TowerTalk] Substitute thicker Phillystran?, Pete Smith