What is the height difference between the desk and the chair?
If the table and chair height collocation is not reasonable, will directly affect people's sitting posture, is not conducive to the health of users. Therefore, it also regulates the desk under the table space is not less than 580mm, the space width not less than 520mm, this is to ensure that people in the use of his legs can have enough space.
The correct height of the table and chair should allow the person to sit in two basic vertical positions: first, when the feet are flat on the ground, the thighs and calves can be basically vertical. At this time, the front of the seat can not oppress the lower level of the thigh. Two is when the arms are naturally drooping, the upper arm and the arm are basically vertical, and then the height of the table should be just below the lower arm level plane contact. This allows the person to maintain the correct sitting posture and writing posture.
As for the height of desks and chairs, the state has established standards. Among them, table furniture height size standards can be 700mm, 720mm, 740mm, 760mm four specifications; chairs, stools, furniture seating height can be 400mm, 420mm, 440mm three specifications. In addition, it also specifies the standard size of table and chair matching, and the height difference between tables and chairs should be controlled within 280 to 320mm range.
