Protection of metallic structural elements against corrosion - using filler blocks secured to irregular cross-section and pliable water and airtight encasement

摘要

A pliable, watertight and airtight encasement is installed about the length of a metallic structural element having an irregular horizontal cross-section to protect from water and air corrosion. The encasement includes filler block assemblies secured to vertically spaced portions of the structural element to fill the cavities and provide a uniform horizontal cross-section. Back-up sheets incircle the structural element in abutment with the filler block assemblies and cover the edges of the structural element. The back-up sheets are encircled by a pliable water and airtight encasement sheet. Foam bands are interposed between the top and bottom of the back-up and encasement sheets. Wrapping bands are then extended around the upper and lower portions of the encasement sheet to compress the sealing bands.