» 300 „ „ 2f „

After the load was removed, the permanent set was found to
be lAin. With regard to this deflexion, it is to be observed
that the connexions left to be riveted up in India were only
bolted together for the purposes of testing. The deflexion and
permanent set would of course have been less if the structure
had been riveted up as it was afterwards in India. The ave-
rage weight of each span is about 133 tons— the exact weight



176 Works in Iron.
of the fixed and rollings ends differing slightly — the total weight
of the ironwork in the entire bridge being about 1,860 tons, the
value of which, when iron is selling at the price given on page
i35> being about ;^I9 los. per ton. Messrs. Handyside & Co.
erected each span complete before it left their works, the iron-
work being painted in parti-colours, so as to facilitate erection in
India, adjoining members being thus distinguishable at a glance.
The ironwork was delivered at the port of shipment at the rate
of one span every three weeks, and this without disturbing the
other arrangements at the works.
CHAPTER XVI.
EXAMPLES OP BRIDGES CONTINUED. SUSPENSION BRIDGE.
FLOATING BRIDGE.
(For the assumed value of iron in the following Examples^ see page 135.)

Example No. 31. — ^The Albert Suspension Bridge, over
the river Thames at Chelsea, London,* designed by Mr. R.
