r containing three boilers, and the upper storey the machineryat which the work-people Avere employed. Immediately over the roomlast mentioned, and serving for the roof, there was a water-cistern,formed of asphalte, which covered the whole of the top of the building,an extent of about 1,270 square… … each 2 feet 3 inches deep at the centre, and 1 foot 10|-inches at eachend, trussed with wrought-iron bars 2^ inches by 1 inch high, extend-ing from wall to wall, Avithout pillars or other supports. Between thesebeams brick arches were turned, which, being levelled and filled up inthe groins in the…
Building, Iron and steel
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