The Viaduct Works' Handbook

67 pillars may be taken at £1 12s. each, and the girders at £4 6s. 87. each ; this for a bay 20 feet length of shed of these pillars and girders would cost £11 17s. 4d. A more substantial shed of this class, for framed roof, as at page 66, can be built with the same stanchions and girders for spans up to 35 feet; but from 40 feet up to 60 feet span requires stronger sections of girder and column. A wrought-iron stanchion, 16 feet high, suitable for roof up to 60 feet span, would weigh about 5i cwt., and cost about £4 12s.; and a wrought-iron gutter beam, 20 feet long, weighs about 8 cwt., and will cost about £6 8s. The cost of such a building complete may be reckoned at about £10 10s. per square. , The accompanying illustration represents a class of building com- posed chiefly of iron and wood ; the framework is of iron. A large number of them are manufactured at the Viaduct Works for soldiers huts for the Government. The floor is supported upon cast-iron foundation piers, placed 5 feet 6 inches apart, upon which are laid wood bearers, 6 inches by 3 inches in length, corresponding to width of building; these bearers are placed at a distance of 6 feet 6 inches apart, and upon these are fastened wood floor joists of ordinary size, about 16 inches apart, to which the flooring boards are secured. The walls or sides of the building are composed of iron and wood ; vertical angle iron stanchions are placed 6 feet 6 inches apart, and bolted to the floor bearers; to these stanchions are secured outside weather board- ing and inside panelling, all of boards l of an inch thick. The