Problem Solving Forum
March 23 - April 7, 2017
When we use field splice plate connections on structural steel projects, how do we prevent rust and rust staining at bolt heads and at the splice plate/steel interface?
Larry Muzia of Exceletech Coating & Applications, LLC on
December 13, 2017:
Inorganic zinc-rich coatings are a very good choic ...read more Inorganic zinc-rich coatings are a very good choice for one-coat protection on faying surfaces to include bolt holes. In addition, the application of a high performance caulk on overlapping connections can eliminate water ingress into the annular space. Galvanized bolts and/or zinc-tumbled bolts can be a good choice and should be properly overcoated after erection using a coating system that will obtain a sufficient level of edge protection.
Tom Schwerdt of Active Transportation Advocates on
December 12, 2017:
Use a coating meeting your slip requirements. Ensu ...read more Use a coating meeting your slip requirements. Ensure all structural steel is coated, including your faying surfaces and inside the bolt holes (typically primer only.) Use galvanized bolts and nuts. Require repair coating of any cutoffs or installation damage.
Rahil Shaikh of Link Middle East LLC on
November 21, 2017:
Follow the given process to protect the bolt head ...read more Follow the given process to protect the bolt head from rust: pickling - rinsing - flux solution - drying - hot dip galvanising.