I ve also drawn a line connecting opposite corners of the big rectangle formed by the main facade.
Gable and valley roof house.
Here is a quick summary comparing hip and gable roofing.
Valleys are typically found where gable dormer roofs meet the main roof or when a house has angled wings or additions where two roof sections in different planes meet.
As seen here a front gable became the perfect entryway to a suburban garage in the age of the private automobile.
A front gable roof is placed at the entrance of the house.
It s also known as a cross gable roof since the home has a cross footprint.
The gable and valley roof is a very popular roof design.
The top of the segment that radius creates sets the proper height of the roof.
The valley area of a roof the straight lines formed when two different planes of the roof meet is a critical area that handles a tremendous amount of water run off.
Square for square a simple gable roof will be cheaper compared to a complex hip and valley roof design with many intersections but sometimes gable roofing can be complex as well such as adding in dormers or extra wings to the home construction.
This design is often seen in colonial style houses.
However if the roof also contains hips and valleys it should either be shingled or roofed with metal shingles or standing seam to help prevent roof leaks.
Interestingly you can mix and match roof styles when building a gable and valley roof designs for a cross footprint home.