Elementary building construction and drawing : stage 1 (1907)
Burrell, Edward J · London : Longmans Green · leaf 128
Wood Roofs 117 In addition to the collar, a beam or iron rod is sometimes added to tie in the feet of the rafters. When this is done the … collar acts wholly as a strut. Both the collar and tie should in this case be supported by a bolt or wood strap hung from the
Building
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from St. Nicholas [serial] (1873)](https://img.insideoutlibrary.com/img/200/ia-stnicholasserial4311dodg-710-978.webp)
