[TowerTalk] Anchor Bolt Grade Suitable for Tower Base?

[Kevin Normoyle]

I know nothing about structural engineering. But I can google.

prior towertalk:

http://lists.contesting.com/archives/html/Towertalk/2003-05/msg00236.html
http://lists.contesting.com/archives//html/Towertalk/2003-05/msg00240.html

although here, ASTM F1554 grade 36 is mentioned instead of A36 for 
anchor bolts.
(sounds like it's a new spec that supersedes A36 for anchor bolts)

http://www.aisc.org/MSCTemplate.cfm?Section=Steel_Interchange2&Template=/CustomSource/Faq/SteelInterchange.cfm&FaqID=2031

details of F1554 grade 36 here

http://www.portlandbolt.com/technicalinformation/astm/ASTM_F1554.html

interesting differences between the various grades
f1554 grade 36: 36 ksi yield
f1554 grade 55: 55 ksi
f1554 grade 105: 105 ksi

f1554 apparently a relatively new spec
good detail here:

http://www.fhwa.dot.gov/bridge/signinspection02.cfm

here's a towertalk reference of a tower failure due to bolt failure.
http://lists.contesting.com/archives/html/Towertalk/2001-05/msg00576.html

interesting this mentiones A36 bolts coming from US tower.
http://lists.contesting.com/archives/html/Towertalk/2004-09/msg00743.html

-kevin