357
weaker ploor.
It must be remembered to corrosion,
that iron is subject, and expecially
damp heat
in the
If
ta
apter
Ea
of
this cliniate."
weak floor be adopted, it would
ان کی مدد
few years have to be renewed.
I have no practical
acquaintance with Lindsay's plooring but its durability depends on the life of the iron covering plates. Whereas in the floor I have proposed the concrete arching would be ~ practically permanent as it would remain intact should the galvanised arched plates on
on which it rests
suffer from corrosion.
"
Note B.
5888.
Note B. Taking Mr. Gale's estimate the saving appears to be only
of
concrete
but about the same
weight of iron. The concrete inn this system benig only filling - would cost about 2/5th per cubic yard of the concrete in the present systems / which is arched work and would have to be in Porkand
comment concrete) and the difference in the cost of
concrete for the two
system world thus be ( 2/5 of 1/4 = 1/10)
as 1 is to 10.
Nor do
dee
the reason
for assuming that this floor will have to
carry
more than 1/2 live load / the amount * warehouse floors
for usually
whuch
are in
calculated) in which case the
cronwork would be about 23 1⁄2 To
lighter and the concrete in proportion.
al
arrr
of opinion that saving of
$
there would be
something like £1,500 by adopting
this