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Note: The Area Load Limitation is called “Uniformly distributed load” limitation in the Airbus Weight and Balance manuals.
. Unit: kg/m2 or lb/ft2
Weight of the piece W
Area Load ==
Contour Area S
The contour area is the external contour of the contact points on the floor.
. Example: Let’s assume a Maximum Area Load of 2000 kg/m2
The following rectangular load is laying onto four pieces in direct contact with the floor. The surface used for the calculation of the area load is represented by the external green contour.

870
Area load = = 1450 kg/m < 2000 kg/m
0.6 Max weight = 2000 x 0.6 = 1 200 kg > 870 kg
Area  load not exceeded
c) Compartment Load Limitation
. Definition: The compartment load limitation is the maximum load acceptable in anentire compartment. This limitation applies to the whole load located in a given compartment.
Note: The Compartment Load Limitation is called “Cumulative load” limitation in the Airbus Weight and Balance manuals and it concerns the complete forward or aft hold or the aircraft.
. Unit: kg or lb
LOADING LOADING

A. LOADING GENERALITIES

d) Cumulative Load Limitation
. Definition: The cumulative load limitation is the maximum weight that can be carried forward or aft of a given section. This limitation prevents the weight loaded in the forwardand aft fuselage sections to exceed the capability of the frames and skin stringers. 
Note: The Cumulative Load Limitation is called “Fuselage Shear load” limitation in the Airbus Weight and Balance manuals.
.
Unit: kg or lb

.
Example: Fuselage shear load forward of frame 40.

 

The total payload weight applied on the main deck and the lower deck forward of frame 40 must not exceed 18 tons when the ZFWCG is 24%.

A. LOADING GENERALITIES

5.1.3. Floor panel limitations
a) Contact load limitation
. Definition: The contact load limitation is the maximum load acceptable in direct contact with the aircraft floor per surface unit. This limitation is used to prevent the load in direct contact with the floor from exceeding the capability of the horizontal floor panels(metal sheet, honey comb sandwich panels).
Note: The Contact Load Limitation is called “Local load” limitation in the Airbus Weight and Balance manuals.
. Unit: kg/m2 or lb/ft2
Weight of the piece W
Contact Load ==
Contact Area S
The contact area is the surface in direct contact with the floor.
. Example: Let’s assume a Maximum Contact Load of 2000 kg/m2
The following rectangular load is laying onto two pieces in direct contact with the floor. The area used for the calculation of the contact load is represented by the green contours.
0.2 m 0.2 m 870

Contact  load = = 4350 kg/m > 2000 kg/m
0.2 Max weight = 2000 x 0.2 = 400 kg < 870 kg
　
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