Which direction does the big end of the upper beam face?

Toward the south

When building a house in rural areas, the beam heads of the beams face south. In the past, in rural houses, wherever wood was needed, it was all on the roof. There are three types of wood commonly used: beams, purlins, and rafters. Generally used wooden beams are relatively thick, with a diameter of more than forty or fifty centimeters. This kind of wood has a relatively long growth time. Correspondingly, the diameter difference between the head and the root of the wood is relatively large. There is a big difference in weight between the thick end and the thin end. The south direction is the front of the house, and it is a general rule that the big head faces the man.