To freely set the position of eaves by supporting the eaves with multiple brackets protruded at constant intervals from a horizontal frame body located between the outer walls of upper and lower stairs, and supporting one side end section of the eaves with rafters protruded on the outer walls.

Eaves 4 are supported by multiple brackets 3 protruded at constant intervals from a horizontal frame body 2 such as beams or furring strips. Wooden rafters 5 are provided at one side end section or both end sections of the eaves 4 according to the position of the eaves 4, and the rafters 5 are supported at the upper sections of rafter receiving metals 7 formed by folding a metal sheet at the wall side end section. L-shaped metals 21 are fitted to the side faces of the tip sections of the rafters 5, and long head plate substrate members 8 are fitted in parallel with the outer wall face continuously in the horizontal direction on the front faces of the L-shaped metals 21 and on the front faces of the front end ribs of the brackets 3. The fitting positions of the eaves can be freely set regardless of the fitting positions of the brackets 3.