Aspects of the development of structural carpentry 1600-1800
Medieval side purlin roofs had their principal rafters strutted
from the tie beam with members acting in compression. By the
beginning of the nineteenth century these had been superceded by the
use of king post and queen post roof trusses with posts in tension.
This study shows that. the trussed king post roof was first
introduced into England by Inigo Jones and traces its subsequent
development. It shows that Christopher Wren derived his knowledge
of the trussed roof from Bernardino Baldi's Mechanics and was important
in developing the queen post truss and transmitting a knowledge of
these forms to his assistants and carpenters.
Through a study of eighteenth century drawings, surviving roofs
and contemporary carpenters' manuals, the study also explores the level
of structural understanding during this period.