footbridge, detail of the gangway handrail

anti-fall arrester balcony beam bolts bonus calculation connection construction corrosion design detail dowel elements engineering fireproof flange floors footbridge galvanization gangway grate grating gray grey handle handrail inox ipe iron jumped line material meccanica metal oxidation paint painting park passage planning pontoon post profile project railing road rust safety seismic spots stainless steel stitches structural structure study super surface tubular urban walkway welded wire