Grade 8, grade 5 , what? Sent from my iPad _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists
I am not sure what a Rohn anchor bolt is, usually the tower either sits on top of the concrete with a pier pin or a tower section is embedded in the concrete. FWIW, most structural bolts are hot dipp
The bolts should be listed on the "Tower Engineering Sheets" AKA "Structural Analysis Sheets." Tower Typical Standards are bolts designated as ASTM A325 which corresponds to Grade 5, while ASTM A490
Author: "Jon Zaimes, AA1K via TowerTalk" <towertalk@contesting.com>
Date: Mon, 4 Apr 2022 14:16:39 +0000 (UTC)
Tower hasn't been specified but for Rohn 25 there are two bases that may be bolted to the concrete. BPH25G is hinged base for bracketed or guyed towers. It uses 1/2" bolts but the engineering diagram
Yep, 1/2x12bb are the onesgrade 36 ? Sent from my iPad _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com
I think ASTM F1554 replaced the previous anchor bolt standard since ~1994. F1554 standard tensile strength ratings are 36, 55, and 105 ksi. Matt KM5VI Yep, 1/2x12bb are the onesgrade 36 ? Sent from m
J-bolts are essentially obsolete. When the 2014 version of the ACI code came out, the design pullout strength of J-bolts were sharply reduced based on laboratory results that showed that concrete is
<I think ASTM F1554 replaced the previous anchor bolt standard since ~1994. <F1554 standard tensile strength ratings are 36, 55, and 105 ksi. <Matt <KM5VI I used 105 ksi (red on top) on my HDX-689 12
<Thanks for the clarification Jim - you are correct. Those 105's you have must be <pretty stout ? <73 <Matt <KM5VI combination of Z and X braces. New version of the HDX-689 is 3250 lbs, and uses just