Ladder classrooms are generally found in universities, and can also be seen in some primary and secondary schools. As the name suggests, ladder classroom desks are called ladder chairs; this kind of classroom is large in size and large in capacity, but its biggest feature is that its floor is gradually raised in steps. The farther away from the podium, the higher the ground and the higher the seat. This allows students who are far from the podium and behind the seat to clearly see the blackboard and the podium without being blocked by the students in the front row.

　　Standard classroom design specifications can be designed with reference to the requirements of elementary and middle school combined classrooms. The detail scale of the high-end lecture hall should be adjusted appropriately. Please refer to page 182 of "Architectural Design Information Set 3" "Audiovisual and Co-Classroom", the relevant specifications are as follows.

　　"Code for architectural design of primary and secondary schools GBJ99-86"

　　Article 3.9.4 The layout of the co-class classroom should meet the following requirements:

　　1. The horizontal distance between the front edge of the first row of desks in the classroom and the blackboard should not be less than 2500mm; the horizontal distance between the rear edge of the last row of desks in the classroom and the blackboard should not be greater than 18000mm.

　　2. The horizontal angle formed by the students in the front seat and the far end of the blackboard should not be less than 30 °.

　　3. Seat pitch: Elementary school should not be less than 800mm, middle school, middle school, kindergarten should not be less than 850mm.

　　Fourth, the width of the walkway: the net width of the vertical and horizontal walkways should not be less than 900mm; when both the middle and the longitudinal walkway against the wall are provided, the width of the longitudinal walkway against the wall should not be less than 550mm.

　　Fifth, the seat width should not be less than 450 ~ 500mm.

　　VI. Classroom desks and chairs should be fixed, and the chairs should be flap chairs.

　　Article 3.9.5 When calculating the visual elevation of slope ground or stepped ground, the design viewpoint shall be fixed at the bottom edge of the blackboard. The visual elevation of the line should be 120mm;

　　Lianyun Furniture provides the most suitable proposals for each square design of the venues provided by customers from the initial open space layout to the design of the ventilation ducts, and then to the layout of the seats. "Zero" starts until the venue is perfect.

　　From the scene design, we can tailor the most suitable site layout for customers. The unique design concept and the rational use of each square of space have become the unique core competitiveness of Lianyun seating companies.