Video demonstrating how to repair water damage to a plaster ceiling. Check https://www.do-it-yourself-help.com/how-to-repair-plaster-water-damage.html for more.
Installation of 3M™ Shearbolt Connectors QCI Series. Download the instruction sheet here: https://multimedia.3m.com/mws/media/637376O/3mtm-bolted-connector-qci-series.pdf. For product information please visit: https://www.3m.com/3M/en_US/company-us/all-3m-products/?N=5002385+8711017&Ntt=qci+shearbolt&LC=en_US&co=cc&gsaAction=scBR&rt=rs.