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Jim_Ed's avatar

Structural concrete work is especially resistant to change because of the consequences if your new innovation fails, and no one wants to be the guinea pig for it.

A somewhat related personal example - We were building a very typical 5 story concrete office building. Since the first floor had higher ceilings for retail than the office floors above, the concrete contractor built his formwork to the typical 2-5 floor height and then slipformed the columns coming off the ground floor so they were usable on all floors, which his drawings did not show.

Our structural engineer absolutely blew a gasket when he learned there would be cold joints in the columns. It became a huge ordeal that nearly ended with us tearing out and re-pouring the columns and required extra testing and I believe we had to drill and epoxy extra bar for the engineer to accept it. The concrete sub claimed means and methods, they do it all the time, it saves cost and time, etc etc - which was true! - but this relatively minor deviation got them absolutely drug through the ringer, so its no surprise that innovation isn't growing by leaps and bounds in the concrete trade.

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Aaron's avatar

Very thorough and interesting.

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