bridgebuster,
Much appreciated. Having some significant issues getting the positive moment to work with the assumed 40ksi rebar. Our agencies wants us to evaluate this 50 year old structure using LRFR. Still wondering how we could get this to work with the very different live load models of...
Working on a bridge project in which we are modifying a three bay concrete pier bent. Existing bridge was built in 1962. Existing plans do not specify rebar grade or concrete strength. If I use the assumed material properties from AASHTO Manual for Condition Assessment when properties are...
Working on a new bridge construction project in which the elastomeric bearings have experienced excessive shear deformation. Reason for the excessive deformation is still under investigation, but is likely due to construction staging conditions. Regardless, there is no noticeable distress in...
You definitely can place strands in the top slab. I've attached some standard ConnDOT box beam strand pattern details.http://files.engineering.com/getfile.aspx?folder=da02b624-aee3-4469-a15a-2a067d2092b7&file=Pages_from_CTDOT_BDM.pdf
Thanks for the responses. I've heard the misperceptions in the past and vaguely recall reading that the AASHTO M270 was "prequalified" for charpy and weldability while the ASTM A709 was not??? However, everytime you see a reference to bridge structural steel, you'll see AASHTO M270/ASTM A709...
