What is the size mnemonic for a four-legged, eight-pronged bench?

Four-legged eight-pronged bench size mnemonic is: first of all, the bench surface four eyes in accordance with the thickness of the bench surface 1.2 times the slope of the line, in accordance with each eye to the outside of the two sides of the diagonal hit the eye, and then one according to the required height of the legs of the bench line and hit the eye, the next part of the bench legs on the crossbar, measure out the distance between the eyes below the surface of the bench in the measurement between the surface of the bench and the legs eye height of an inch plus 2 minutes, and then with the eyes of the surface of the bench The distance is the length of the bench leg beams.

Calculation of the tilt of the stool

The four corners of the stool do not care, only pay attention to the angle of the eight forks and the desktop on the line. This angle is related to the length of the fork and the placement of the angle of 30 degrees to 45 degrees or 60 degrees is appropriate. 45 degrees of calculation, a square from the diagonal cut on the line, 30 degrees, 60 degrees of calculation, the length of the fork is the short side of the two times, so that the line into a 30-degree angle and 60-degree angle of the right triangle.

General small bench, limbs legs are oblique. It is the master carpenter often said --- limbs eight tie. The slant is 1 to 20. if calculated as a function it is: tanA=1/20.