How to press the corners of small blue tiles in ancient buildings

The cross section height of the corner beam at the corner of the house is about three times that of the rafters, and the lower ends of the rafters and corner beams are placed on the cornices. In order to gradually raise the corner rafter epithelium level with the corner beam epithelium, so as to pave the board, a triangular wooden strip was placed on the purlin on both sides of the front of the corner of the house, which was called "log" in the Song Dynasty (called "sleeper" in the Qing Dynasty).

After the back cover, make the granules first. The form of the wood grain head should be designed and constructed by the bricklayer himself, but the end of the wood grain head should not exceed the gable. After the grain head is finished, build a leather brick on the closed back, and then build a ridge on the leather brick with tiles. The method of ridging is to build from the grain heads at both ends to the middle. After folding, wipe off the gray line on the brick with a triangular ruler, then cover it with gray to make a grain pattern, and finally smooth and polish the ridge.

There are three ways to build a ridge. One is to squeeze the tiles at a certain angle and build a ridge from the top to the middle. The other is vertical tile, in which a stack of tile heads are laid on the top of the mountain, and then ridges are built from both sides to the middle to close it. Another simplest method is to build a ridge from one mountain to another, just like making ridge tiles on a flat tile roof. After the roof is completed, the back should be plastered with mixed mortar or paper reinforced ash. Slant tile or vertical tile roof is plastered with a layer of cover ash, which can be plastered with paper reinforcement ash and appropriate amount of smoke and ink.