There are some road tunnels on the A50 that are tiled extensively throughout their structure, I worked on part of them years ago, just after opening a section of tiles fell off hitting some cars below, the height was about 12 mts I think, We did not use any type of mechanical fixings and the tiles were fairly heavy, pilks if I remember correctly, and before anyone asks, no, it was not my section that fell. How are they fixed mechanically? I am trying to work that one out, surely not screwed? I will guess at some sort of frame to hold them as a failsafe?
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