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continuous chord angle attachment
you can do a couple of things, either individually or in combination.
1. utilize steel shims at each fastener to fill the gap between angle and precast. the shims can be welded to the angle as well.
2. utilize shorter lengths of angle to better accommodate the irregularity in the wall. each piece must therefore be spliced with some type of lap plates to adequately transfer the load. in high seismic areas this may not be very desireable as you'd want the number of splices to be minimized.
i must say that in the past week i have been reading about tilt-up practices that could include details as that above, and this and my experience in seeing some industrial buildings seem to indicate a double standard for dwellings and industrial construction. i sincerely doubt these things of so many times so scarce attachment gather the same safety that one gets in most dwellings. surely it is because to be ample and necessarily cheap to be competitive safety is diminished...but that is my critic, since they also have people inside. |
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