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Mr. Paul Blomberg, P.E., M.ASCE


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RE: Friction Support

Posted By Paul Blomberg 02-05-2020 12:09 PM
Found In Egroup: Integrated Buildings & Structures \ view thread
Solar panels are routinely anchored to a flat roof by ballasting them down and relying on friction. Be aware that in moderate or high seismic areas, you can't rely on friction from gravity loads to resist the seismic loads. While the owner may not want to breach the roof membrane, it is often done with ...

RE: Seismic Bracing Requirement for Vending Machines

Posted By Paul Blomberg 02-05-2020 12:07 PM
Found In Egroup: Integrated Buildings & Structures \ view thread
ASCE 7-16 section 13.1.1 states "... components that are permanently attached to structures..." need to be anchored depending on seismic design category. I haven't seen many vending machines anchored to the structure. Keep in mind that the code provisions are minimum requirements and it may be prudent ...

RE: Telecommunication steel Tower verticality

Posted By Paul Blomberg 02-06-2019 10:43 AM
Found In Egroup: Integrated Buildings & Structures \ view thread
You may want to use a survey instrument to check for plumb. Check in two directions perpendicular to each other. Usually done at dawn so the tower is at a constant temperature and the winds are low. Be careful taking measurements when the sun is shining on one side of the ​tower as the tower will bow ...