1 Rarely, fistulas occur externally to the skin or internally to another part of the biliary tree, to the pleural cavity or bronchial tree, or to the hepatic artery or portal vein or other vascular structures.
Load factor (aeronautics) In aeronautics, the load factor is defined as the ratio of the lift of an aircraft to its weight and represents a global measure of the stress (load) to which the structure of the aircraft is subjected: where: Since the load factor is the ratio of two forces, it is dimensionless.
Safety factor. 1  the inherent variability of the load (eg. in practice the mass of a ten tonne truck will depend on the load it's carrying), 2  static indeterminacy (when components share the load in proportion to their elastic responses - more of this anon),