thermal movement of structural steel /concrete buildings
I am currently doing a project in china, 7 floors, 1 building is 250 metres long, the other 140 metres,110 metres wide, seperated by a 150mm gap,end on end rectangles, steel frame, concrete slabs.
because i got to this job late, i have no outside reference points, independant of the main structure, to refer back to to check what is moving.
has anyone got any notes on measurement variations, morn till night, summer to winter, on projects you have actually done over these distances.
I know the ins and outs and principles, what engineers calc and what actually eventuates, but I would like input on the actual lengths you have measured and differences found.
the building is currently being clad, with the roof half on.
I know i did a project onces in taiwan, i elevated the bottom grid up 8 floors, to plus or minus 1.5mm, a week later you could have sworn a drunk did it, the steel had moved in both directions, and kind of zig zagged vertically.
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