Any unpredicted motion of your pipe program which could possibly be pressure-connected needs to be investigated and dealt with. a. Expansion joint rubber flanges need to be in connection with a flat area. Ordinary 1/sixteen″ raised experience is Okay. Unacceptable depressions or protrusions are standard of victaulic or comparable flanges. https://expansion-joint-installat13577.blogunteer.com/38239060/examine-this-report-on-pressure-thrust-in-expansion-joints