Excerpt from Constructional Iron and Steel Work: As Applied to Public, Private, and Domestic Buildings, a Practical Treatise for Architects, Students, and Builders
If wood joists are used, these can be cut and trimmed about to suit altered spans and altered arrangements Of stair cases and lift Openings, without serious increase of expense but where concrete floors are used, carried upon rolled iron or steel joists, the case is very different, for the floor becomes a net-work of metal joists, each one Of which should be sent to the site Of such length that it will pass into its place with sufficient bearing on the mam girder, but not too long to be placed without cutting.
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