the typical structure of a yosemune-zukuri roof has four sloping faces which consist of two triangle-shape roofs at " tsumagawa " (the side vertical to the omune ) and two trapezoid-shape roofs at " hiragawa " (the side parallel to the omune ). 典型的な構成の寄棟造の屋根は、4方向に勾配を持ち、長方形の平面で妻側の三角形の屋根と平側の台形の屋根からなる。
in that fashion , however , more goods can be carried by using the pole than by holding things in arms or carrying on the back , because the center of the gravity falls on the position (a shoulder ) which is almost vertical to feet with a backbone as an axis . しかし、さりとて手に抱えたり背負ったりするよりも、重心が背骨を軸として足に対して垂直方向に近い位置（肩）にあり、より大量に物資が運べるためである。
