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STrctPono - yes, meant to ask service life. Thanks for clarifing. SENK151 - a 100 year service life is the gold standard for new builds. As STrctPono mentioned, different DOTs have different thoughts on how to achieve that. NYSDOT's bridge design manual has some decent discussion on service...

Yes, I would use a Class 2 exposure factor for corrosive environments. If this is for a bridge deck, AASHTO is the appropriate standard to use... Also consider reading your local or state dot design standards. They may have additional requirements specifically tailored for the local...

I think retired13 was suggesting that you refer to your local or state DOT for typical curb details. NYSDOT for example has the following standard sheets: Link

Sorry, very poor attempt at "deformed" reinforcement humor on my part. Now that I re-read that, it comes off as rather insulting. I'll leave the puns to the professionals and stick to engineering.

[lol] [lol] Sorry couldn't help myself...

Per the commentary CA13.3.1 (near the bottom of the page): "where the width of the concrete railing varies along the height, Mc...should be taken as the average of its value along the height of the railing. On a side note, 1000kN is a huge force. If you're trying to use a standard single slope...

Generally speaking yes. The hardened washer prevents galling under the turned element. RCSC Specification for Structural Joints Using High-Strength Bolts goes into more detail about the use of washers in Section 6. Link: http://www.boltcouncil.org/files/2009RCSCSpecification.pdf

We are currently using them on one of our projects to couple column reinforcement. They work well when installed properly. You'd be surprised how many contractors haven't used them before and install them incorrectly (as crazy as it sounds installation is not necessarily fool proof). My only...