Now the market sales of tables and chairs are diverse and many brands, when choosing, we must pay attention to the choice of the appropriate size, so that it is also very convenient to use. In order to buy tables and chairs in the lecture theatre, attention should be paid to the size and selection of items to ensure the quality of tables and chairs. The following is an introduction to the size of the chairs and chairs in the lecture theatre and what should be paid attention to in the selection of the desks and chairs in the lecture theatre.
How much is the size of the table and chair in the ladder classroom?
1, in fact, there is no fixed size of the stairs and chairs in the classroom. The size of the students used by each age group will have some gap. Then, the standard size of the chairs and chairs is seen together. The State Ministry of health has issued the national standard of the school table chairs and chairs, and the standard of the tables and chairs used by the nine kinds of students who are different from height . Seat height: the distance from the pedestal point to the ground, generally 400 - 420mm. seat width: the width of the seat plate is generally greater than 400mm; the seat depth: the distance from the front to the back of the seat: generally not less than 400 to 450mm; the back height: the size of the seat plate to the back of the seat.
2. For example, the height of the student is below one hundred and nineteen centimeters. The height of the desk should be fifty-two centimeters, the height of the table under the table should be forty centimeters, the height of the chair should be twenty-nine centimeters; the student's height is one hundred and forty-three to one hundred and seventy-five centimeters, and the height of the desk should be sixty-seven centimeters, under the table. The height of the empty area should be fifty-five cm, and the height of the chair should be thirty-eight cm. And according to the regulations, the form of desk chairs used by primary and secondary schools can be chosen, but the table height, the height of the table below the table and the main size of the chair face must conform to the national standard.
What should be paid attention to in the selection and purchase of table and chair in the ladder classroom?
1, environmental protection: the school tables and chairs selection of wood, plastic, steel wood material, wood materials, especially artificial board, must consider its environmental protection, such as formaldehyde emission, so as to avoid harm to students.
2, Humanization: the structure and size of the school table and chair should be adapted to the requirements of the students' body shape and sitting posture, and carry out reasonable design to prevent the students' health problems such as hump back, cervical spine bending and so on.
3, safety: the material of the school table and chair has the characteristics of fire resistance, water resistance, preventing the occurrence of fire, especially the table and chair used in the laboratory, and some chemical reagents will be used. In addition, the edges and corners of tables and chairs should be rounded to avoid knocking, and metal parts should not be too sharp to prevent scratches. The structure of tables and chairs should be strong and reliable, and can bear the weight of books.
When choosing the table and chair of the ladder classroom, we must pay attention to the selection of the appropriate material, only the material enough to be environmentally friendly, the students can use it to reduce the injury, but also pay attention to the high degree of problems. The above is about the size of the table and chair in the ladder classroom and how to choose the ladder and chair of the classroom to pay attention to what the relevant introduction, the school can synthesize the above factors for the selection of tables and chairs.