The japanese while using much subtler curves than the chinese favored take the curved roof to amazing levels of beauty and complexity.
Japanese roofs curved.
But that s merely a speculation from your logic point of view.
Many people in japan are buddists.
Posts and lintels support a large and gently curved roof while the walls are paper thin often movable and never load bearing.
The application of curved lines in japanese architecture is based on a style imported from the asiatic continent and dates from about the middle of the 6th century.
The slopes are steep enough near the house walls that precipitation is highly unlikely to stay on the roof.
In designing the roof the japanese architecture studio sought to create a new curved surface with a flat material and a very thin cross section using gravity and tension as such the roof employs.
The curves of roofs are characteristics of japanese traditional wooden architecture.
In conclusion curved roofs in japan are important because not only is it beautiful and logical it also is because most of japan are buddhists and the buddhists.
Asian roofs are gently curved out at the corners in order to allow more light to enter the windows in winter and provide extra shade in the summer.
The harmonious blending of these two types of curves is the terimukuri style of.
Teri are curves that slope gently like the base of mount fuji and mukuri is the bulge that rises up at the peak.
This happens because in summertime the sun is more directly overhead while in the winter it only gets about 35 degrees above the horizon at noon.
Bioclimatic architecture at its best.
Arches and barrel roofs are completely absent.
Bow roofs appear gable like but the slopes are curved.
Gable and eave curves are gentler than in china and columnar entasis convexity at the center limited.
So because of this many people have curved roofs inspired by their religion.
Buddhist temples have curved roofs.
There are many curved lines in the design of the japanese roof and the most remarkable are the curves of the eaves and the slope of the roof.
Two of the styles after this are actually the inverse of this concept.
The roof bending upwards at the corners may seem to have no practicality true.
As for english roofs being a minor design aspect i would humbly disagree take a look at any of the books on english monastic carpentry that are out there cecil hewitt et al and the church roofs are.
Without the ridge it would be a barrel roof not on our list and the ridge is clearly what gives it the bow design.