AITC Technical Note 26
AITC Technical Note 26
(OP)
AITC Technical Note 26 was just brought to my attention
https://a itc-glulam .org/shopc art/detail s.asp?cate gory=& item=TN-26
This note deals with Glued laminated beams fabricated before 1970. Apparently before 1970 the grading requirements for laminates were not as stringent as they are today resulting in an over stated Fb.
In the road system under my management I have a pre 1970 glulam bridge that has not undergone any changes in use or structural modifications since it’s construction. In light of this TN I'm putting a contract together to have the bridge professionally inspected.
My question is, if this report comes back with no defects noted what are my requirements for implementing this guidance? Utilizing the reduced Fb will resulting in having to post a very low load rating. Currently the bridge is rated to a HS-20 load.
Thanks in advance for any help/suggestions
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This note deals with Glued laminated beams fabricated before 1970. Apparently before 1970 the grading requirements for laminates were not as stringent as they are today resulting in an over stated Fb.
In the road system under my management I have a pre 1970 glulam bridge that has not undergone any changes in use or structural modifications since it’s construction. In light of this TN I'm putting a contract together to have the bridge professionally inspected.
My question is, if this report comes back with no defects noted what are my requirements for implementing this guidance? Utilizing the reduced Fb will resulting in having to post a very low load rating. Currently the bridge is rated to a HS-20 load.
Thanks in advance for any help/suggestions






RE: AITC Technical Note 26
Mike McCann
MMC Engineering
RE: AITC Technical Note 26