The principle of the height of desks and chairs

The height of desks and chairs can be calculated. According to professional calculations, using the height of the child by 0.27 is the appropriate height of the chair. The desk is about 33 cm higher than the chair, which is the most appropriate. The correct height of the desk and chair should enable the person to maintain two basic vertical positions while sitting: First, when the feet are flat on the ground, the thigh and calf can be substantially vertical, and the front edge of the desk drawer cannot oppress the thigh plane. Second, when the two arms naturally droop, the upper arm and the lower arm are basically perpendicular. At this time, the height of the tabletop should just be in contact with the lower plane of the lower arm, so that people can maintain the correct posture and writing posture. In general, the space under the desk top is not less than 58 cm and the space width is not less than 52 cm.

The height of the desk

Generally, the size of a single-person desk is about 60 cm wide, 110 cm long, and the height of the table is 71-75 cm. The table is 12.5 cm away from the bottom of the drawer. If you exceed this distance, you will get up once you get up. I was hit by a desk. The child's desk can be raised and lowered so that the height of the desk can be adjusted. The adjustable height of the desk is controlled between 53-79 cm. The width and depth of the desk are controlled at 120 cm and 60 cm. between. In addition, for desks used by children, even the desk angle can be adjusted because the angle of the child's writing on the desk is that the desktop of the desk can be tilted by about 7 degrees, and the desktop tilt angle at the desk is 45 degrees. . If a desk for a child in the family is placed against a wall, a lamp slot of about 10 centimetres in size can be installed approximately 45 centimeters from the countertop, and a bookcase or bookcase can be set up above the lamp slot. The eyes are not stimulated by light and they ensure sufficient light.

Chair height standard

According to national standards, the seat height of the chair-stool furniture can be 40 cm, 42 cm, 44 cm in three sizes, and the width is about 40-50 cm. It is also stipulated that the height difference between tables and chairs should be controlled within the range of 28-32 cm. The desk is too high. The chair is too low or the desk is too low. The chair is too high, which can cause people to form a crouching posture, shortening the viewing distance, and causing the spine to bend and deform and myopia.