Considering an aircraft hangar door in terms of its technical specs, the way an architect or engineer would, provides a more technical, functional view of what a hangar door system does. It comes down to a set of central parameters that describe not how a door looks, but how it will perform in real world situations.
Listed below is the core set, with examples of measurement units and applicable US and European standards. They apply to all door types except where noted. Some, like wind resistance and deflection, become increasingly critical as doors get bigger. Assessing them correctly for each project determines the final engineering design and manufacturing specifications.
Clear opening width: Total clear width for aircraft entry with maneuvering clearance, e.g., wingspan + 3-6 ft/1-2 m
Opening height: Vertical clearance including safety buffer above tallest aircraft, e.g., tail height + 3-6 ft/1-2 m
Interior clearances: Space required for door operation, e.g., side room for sliding/stacking, headroom + inside room for raised types
Wind load resistance: Capacity to resist wind pressure, e.g., 20 psf/1 kPa min to 100+ psf/4.8+ kPa (ASTM E330/ASCE 7, EN 12219 or equiv.)
Fire rating: Resistance to fire spread through door, e.g., 60-180 minutes (UL 10B/IBC, EN 1634 or equiv.)
R-value: Thermal resistance of insulation material, e.g., R-10/RSI 1.8 min to R-32/RSI 5.6 (ASHRAE 90.1, EN 12428 or equiv.)
U-value: Heat loss – overall heat transfer of total door assembly, averaged to square meter, e.g., ≤0.6 W/m²K
Opening speeds: Operating velocity range for safe/efficient travel, e.g., 0.5-1.6 ft/s/0.16-0.5 m/s
Deflection limit (rigid panels): Maximum panel flex without binding/seal failure, e.g., L/120 span, 1 ft/305 mm max on 120 ft panel (AISC 360/IBC, EN 1993 or equiv.)
Fabric tension/weight: Pretension for tautness, density, tensile/tear strength, e.g., 2-10 N/cm pretension; 19-32 oz/yd²/900-1500 g/m² density (ASTM D751/EN ISO 1421:2017 or equiv.)
Drive system: Drive mechanism and control specifications, e.g., motors, warning systems, control panels
At Spec-Dor, our engineers discuss hangar door specs in terms that suit your needs, from a deep technical dive, to plain language explanation with real world examples. It’s part of our commitment to start-to-finish Radical Collaboration!
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