Most galvanizing is accomplished by hot-dipping metals into a vat. There is a maximum limitation (size of available vats) on the length of dipping a single member. There is also considerable expense in galvanizing. I have read some reports on experimental bridges that are completely galvanized.
At this time, galvanizing of bridges is just experimental and is not used for several reasons: (1)most DOTs now use A588 Weathering Steel for many applications that does not require painting or coating at all, (2) painting is cheaper than galvanizing, (3) welding on galvanized metals produces toxic fumes, (4) size limitation, (5) cost, and (6) production schedule.Why isnt galvanized steel used in bridges and other outdoor structures to avoid constant painting?
galvanized steel often cannot sustain as much weight as the steel used for bridges - maybe some day it canWhy isnt galvanized steel used in bridges and other outdoor structures to avoid constant painting?
It's expensive, paint is cheaper and mild steel is stronger
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment