1. Size of student desks and chairs
In institutions of higher learning, there is only one kind of desks and chairs, which are unisex. The varieties are as follows:
A) Fixing tables and chairs;
B) non-fixed tables and chairs.
Main dimensions of fixed tables and chairs in colleges and universities
Size name size description mm
Desktop height (h 1) 350
Desktop depth (t 1) 600
Desktop width of each seat (b 1) ≥620.
Clearance height under the table (h2) ≥300
Clearance depth under the table (t2, T3) 4 10 10,
Seat height (h4) 360
Effective depth of seat surface (t4) ≥340
Height from upper edge of backrest to seat surface (h5) 2 10
Height from backrest point to seat surface (ω) 170
Height of lower edge of backrest from seat surface (h5) 420
The horizontal distance between the table edge and the backrest point on the sitting side is 8 10 ~ 850.
The front and back length of each set of tables and chairs is 730 10.
2. National standards for tables and chairs
Generally, the width of a single desktop is 550 mm to 600 mm and the depth is 380 mm to 420 mm.
Under-table space: any form of desk must have enough under-table space to place the lower limbs, so as to ensure the front and back movement of the students' lower limbs.
Chair height: that is, the height of the chair seat surface from the ground. The height of the chair should be slightly lower than the calf 1 cm (wearing shoes). The calf is slightly higher to make the center of gravity of the calf on the whole sole of the foot, which is convenient for the front legs to move back and forth.
Chair depth: that is, the width before and after the chair seat should be equivalent to three-quarters of the total length from hip to thigh. The front edge of the chair should not be angular, and the back of the chair seat is slightly inclined at an angle of 0 ~ 2 degrees.
Chair backrest: the backrest leans backward, making an angle of 95 ~ 100 degrees with the chair surface. The waist backrest should be suitable for bending the spine and resting the back muscles when sitting and reading.
Relieve fatigue. 3. Maintenance of tables and chairs
1, the most important thing is that students should take good care of their desks and chairs, treat them as their own things, don't draw or write on them, and don't play with them as weapons.
2. Because most of the panels of training tables and chairs are made of wood, it is generally required to keep them as dry as possible and avoid being placed in wet places.
If you want to clean it, try not to wipe it with a wet cloth or rinse it directly with water. You can choose a delicate cloth to wipe. 3. Don't be exposed to the sun and stay away from some fire sources.
4. Students should be careful not to push and pull hard when pushing and pulling, which will easily cause damage to the desk bucket, so these are some small details that need to be paid attention to every day.
5. Don't put some acid and alkali substances on tables and chairs to avoid corrosion, but also for personal safety. Finally, it is necessary to regularly check and maintain some accessories of the whole desk and chair.
The above is the relevant introduction of this article. I believe you will have a simple understanding of this after reading it. If necessary, you can continue to pay attention to the 1 home network for more information.