3-2. Lean-To or Shed Roof. This roof used where hasty or temporary construction is needed and
where sheds or additions to buildings are erected. The pitch of this roof is in one direction only. The
roof is held up by the walls or posts on four sides. One wall, or the posts on one side, is higher than
those on the opposite side. Refer for Figure 3-2.
Figure 3-1. Gable roof
Figure 3-2. Lean-to or
3-3. Hip Roof. This roof has four sides or slopes running upward toward the center of the building
to create a ridge (or peak). Rafters at the corners run diagonally from the bottom edge to meet at the
center (ridge). Other rafters are then framed into them. Refer to Figure 3-3.
3-4. Valley Roof. This roof is framed of two intersection hip or gable roofs. The two roofs meet at
a valley. Each roof slants in a different direction. This roof is seldom used, since it is complicated and
requires much time and labor. Refer to Figure 3-4.
Figure 3-3. Hip roof
Figure 3-4. Valley roof