The roof section shows one of a pair of king-post trusses with a common tie-beam of about 13 and a half feet (marked 'D'). However, the principal rafters (marked 'A') only measure about four and a half feet in the centre while the out-facing principal rafters are 12 feet long and are tied at the bottom by a 12 inch beam that spans about 28 and a half feet.
Drawing 23 shows the intricate (semi-M) roof with the two arched 'chimney shafts' placed in the valley that has a gutter to take off the rainwater. Presumably, the idea was to stabilize and partly conceal the chimney stacks which drawing 30 shows as projecting three feet above the roof line.
Drawing 27 is stamped 'IS', that is Soane's initials, as are drawings 18, 30, 32.
Sir John Soane's collection includes some 30,000 architectural,
design and topographical drawings which is a very important resource for
scholars worldwide. His was the first architect’s collection to attempt to
preserve the best in design for the architectural profession in the future, and
it did so by assembling as exemplars surviving drawings by great Renaissance
masters and by the leading architects in Britain in the 17th and 18th centuries
and his near contemporaries such as Sir William Chambers, Robert Adam and
George Dance the Younger. These drawings sit side by side with 9,000 drawings
in Soane’s own hand or those of the pupils in his office, covering his early
work as a student, his time in Italy and the drawings produced in the course of
his architectural practice from 1780 until the 1830s.
Browse (via the vertical menu to the left) and search results for Drawings include a mixture of
Concise catalogue records – drawn from an outline list of the collection – and
fuller records where drawings have been catalogued in more detail (an ongoing