www.flickr.com/photos/internetarchivebookimages/tags/book... . are emplo3ed, and the situa-tions in Avhich they are placed. The principal timbers of a roof arethe following, but they are not all used in every roof: the tie-beams, wall-plates,
NHBC Standards 2011
NHBC Standards 2011
Roof construction - DIYWiki
rafter span structural roof system Archives - Hansen Buildings
Multinail Hub - Connection Details Using Pole Plates