What are the horizontal and row spacing standards for desks and chairs?
First, the row distance of desks and chairs: primary school should not be less than 850mm, middle school should not be less than 900mm; Longitudinal aisle width should not be smaller than 550mm. The clear distance between the end of the desk and the wall (or the internal pilasters and equipment pipes protruding from the wall) should not be less than 120mm.
Second, the horizontal Angle of view between the students in the front seat and the far end of the blackboard should not be less than 30°.
Third, the horizontal distance between the front desk and the blackboard in the front row of the classroom should not be less than 2000mm; The horizontal distance between the back edge of the last row of desks in the classroom and the blackboard should not be greater than 8000mm in primary school and 8500mm in secondary school. A horizontal walkway of not less than 600mm shall be provided at the back of the classroom.
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