Ladder classrooms are commonly seen in schools. In some company meeting rooms and training rooms, the design of ladder classrooms may also be used. This kind of classroom has a large area and a large number of people, but its biggest feature is that its floor is gradually raised in a ladder shape. The farther away from the podium, the higher the floor, the higher the desks and chairs in the ladder classroom will be placed, so that people who are far away from the podium and behind the seats can clearly see the blackboard and the podium without being blocked by the people in the front row.
First of all, the layout standards of the ladder classroom and desks and chairs can be referred to as follows:
1、 The horizontal distance between the front of the first row of desks in the classroom and the blackboard should not be less than 250cm; The horizontal distance between the back edge of the last row of desks in the classroom and the blackboard should not be greater than 1800cm.
2、 The horizontal angle of view between the students in the front side seats and the far end of the blackboard should not be less than 30 °.
3、 Seat spacing: not less than 80cm for primary school, and not less than 85cm for middle school, middle school and kindergarten teachers.
4、 Walkway width: the net width of longitudinal and transverse walkways shall not be less than 90cm; When the middle and wall longitudinal walkways are set at the same time, the width of the wall longitudinal walkway shall not be less than 55cm.
5、 The seat width shall not be less than 45~50cm.
6、 The desks and chairs in the classroom should be fixed, and the chairs should be flip chairs.
7、 When calculating the elevation of sight on sloping ground or stepped ground, the design viewpoint should be set at the bottom of the blackboard, and the elevation of sight should be 12cm; The front and rear seats should be staggered.