| OCR Text |
Show Figure 158: Purlin rafters protruding from the end of the Ole Swensen house (see figure 64), Manti. This view illustrates the basic components of the purlin system. geometric block by building up the end walls into the apex of the gable to iupport the purlins. Once this structure was in place, the rafters, running from plate to ridge, were placed across the purlins. The roof was then finished by adding horizontal sheeting boards to which the shingles were nailed (figure 158). In most cases, the length of the house required the purlins to be supported in the middle. This underpin~ng was supplied by internal walls that bore the weight of the roof. These walls were either built all the way to the apex in houses with finished second storys 276 |
