Classification and practice requirements of large hangar doors;
1. Sliding doors-ground rail model, ground rail gauge, distance between ground rail and wall surface, position and specification of anchor bolts for fixed ground rail, position, specification, elevation and construction method of fixed parts of guide, thickness and weight of door leaf, position and construction method of door resistance, sealing structure of joints, scope and elevation of maintenance walkway above the gate, heat transfer coefficient, electric power and position of drainage points of the door, etc.

2. Stacking door-position, specification and construction method of lateral guide rail fixing piece, width of seam between lateral guide rail and wall, plane position, size and construction method of pit where movable column is in place, deadweight of door leaf, movable column and lateral guide rail, position specification, elevation and load of upper fixing piece of door leaf and movable column and its construction method, deadweight, fixed position, specification, elevation and construction method of transmission device, Space size required for folding door leaves, height required for folding movable columns, door leaf thickness, dimensions of movable columns and lateral guide rails, requirements for roof truss deformation (deflection) when the door is running, scope and elevation of maintenance walkway above the door, heat transfer coefficient of the door and electric power.

3. Side turnstile (top-bearing type)-model of upper guide rail, position, specification and construction method of fixing parts, distance between upper guide rail and beam (or column) surface, model and construction method of ground rail, thickness and self-weight of door leaf, sealing structure of joint, plane position, specification and construction method of transmission parts and devices, deformation (deflection) requirements for roof truss or beam when the door is running, heat transfer coefficient of the door, etc.

4. Side turnstile (through-type)-model of ground rail, position, specification and construction method of fixing parts, distance between ground rail and wall, position, specification, elevation and construction method of guide fixing parts, thickness and deadweight of door leaf, sealing structure of joint, plane position, specification and construction method of transmission parts and devices, heat transfer coefficient of door, electric power, etc.