> > Bronze is more likely than copper, being made in bars and
> extrusions (as
> > opposed to bars and grills) rather than sheets, as is copper.
> Copper> wouldn't be strong enough unless it were used as cladding.

In Honolulu we have a bank now publishing company (Yokohama Specie
Bank, 1910, H.L. Kerr, Architect) with door and windows which are
hollow and made of copper sheet, i.e. not clad over wood.  When the
building opened the newspapers announced its exceptional fireproof
design. Most windows, doors and casings are hollow. The profiles are
not tight corners but still fairly complex. Only the casings in high
traffic areas were filled with sand (which we have in great supply)
apparently after installation. I discovered this when a very large
cased opening was moved during a renovation and the beach appeared in
the middle of the construction site. Although it made a terrific mess
the construction crew loved it as the field supervisor took it as
a "sign" that the surf was up and everyone got the rest of the day
off.

Spencer

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