The art of sound building, demonstrated in geometrical problems : shewing geometrical lines for all kinds of arches, niches, groins, and twisted rails, both regular and irregular : with several other draughts of buildings and staircases : all curiously engraven on copper plates : wherein are laid down (suited to every capacity) easy practical methods for carpenters, joiners, masons, or bricklayers, to work by
William Halfpenny's 1725 London treatise, printed for the author and booksellers, gives carpenters, joiners, masons and bricklayers practical geometrical methods for setting out arches, niches, groins and staircases. Its copper-engraved plates show construction diagrams with precise lettered points, arcs and projected stair and vault outlines, useful for a designer studying early architectural drawing, structural geometry and the logic of masonry layout.
