Where are the beams of the ancient buildings? It would be best if you could attach a picture.

Rake beam (also called rake beam): Rake beam is used on two slopes on the roof of the palace or on the hillside where the mountain rests, to support purlins and collect gold. (or on a building such as a miscellaneous pavilion). Practice: according to the calculated pole cutting, all sides are planed flat. Pay-off, scribing, no back, the height is a radius according to the diameter of purlin (one and a half sign according to the centering truss for large type), and the width is 8/ 10 of the height. Press the machine surface length from the middle of the walking frame to the middle of the processing machine for a long time, then retreat one end to half the diameter of purlin and put the head thread under the beam. Saw a quarter of the purlin's diameter from the top and bottom of the purlin, and carved it into two halves, half with a tenon and a width of 2 inches. The head of the beam is flush with the purlin skin or flush with the outer gold plate line.