huangyhg

astm standard for pt bar diameters > 1-3/8"
all,
is there a astm standard which covers post-tension bars greater than 1-3/8"? astm a722 covers bars only up to that dimension. has anyone else had experience with specifying bars that are larger than the 1-3/8"?
qshake,
you may with to check you date of astm a722. i think the lastest standard mentions up to 2 1/2". also see williams form and dywidag for details.
i have personally used 1 3/4" grade 150 ksi, and 2 1/2" grade 75, the latter not being prestressed, but basically high strength rebar will all-threads.
regards,
mark
mark geoghegan
-----------------------------
s t r u c t u r a l t e c h
australia - guam - hawaii
-----------------------------

__________________
借用达朗贝尔的名言：前进吧，你会得到信心!
[url="http://www.dimcax.com"]几何尺寸与公差标准[/url]