The Artizan . 98 Mersey Docks and Hwrbowr. [The Aktizan,May 1, 1865. as shown in Fig. 2, but it seems that these supports were afterwardsdeemed of inadequate strength and were altered to double T cross girders,8in. deep, made of a central web of Jin. plate, stiffened by two 3in. angleiron, fin. thick at the top and at the bottom. Two strong cast iron curbsplaced 6ft. apart, define the space allotted to carts and carriages. The girders are constructed on the cellular principle in the top or com-pression flanges, and are 10ft. deep in the centre, tapering down to the ends. The ten
The Artizan . 98 Mersey Docks and Hwrbowr. [The Aktizan,May 1, 1865. as shown in Fig. 2, but it seems that these supports were afterwardsdeemed of inadequate strength and were altered to double T cross girders,8in. deep, made of a central web of Jin. plate, stiffened by two 3in. angleiron, fin. thick at the top and at the bottom. Two strong cast iron curbsplaced 6ft. apart, define the space allotted to carts and carriages. The girders are constructed on the cellular principle in the top or com-pression flanges, and are 10ft. deep in the centre, tapering down to the ends. The tension flanges are made of two plates Jin. thick in thecentre, reduced to fin. at the ends, and 2ft. 6in. wide; they are rivettedto the sides by means of two 3in. angle irons Jin. thick, with fin. joints of the plates are made by means of long covering plates, chainsrivetted. The cellulse of the top flanges are 18in. deep and their top andbottom plates are fin. thick in the centre, reduced to Tain, at the ends;their sides and mid feathers are made of plates of the same thickness, andthey are rivetted together, as well as to the main webs of the girders, bymeans of Sin. angle irons, fin. thick with fin. rivets. The main webs aremade of plates 2ft. wide and jin. thick in the centre increasing to fin. atthe ends. Their joints are covered outside by means of Jin. strips, , and inside by means of J irons, 4Jin
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Keywords: ., bookcentury1800, bookdecade1840, booksubje, booksubjecttechnology
