A pallet measures 2 m × 2 m and has a mass of 30 kg. It is supported by two beams, each measuring 2 m × 0.5 m. Only the beams are in contact with the cargo hold floor. The maximum floor load is 210 kg/ft2. What is the maximum mass that can be placed on the pallet?
In this question, the size of the pallet is not relevant. You must only consider what surface area is in contact with the cargo compartment floor. The pallet is carried on two ground supports and it is this area that is relevant when considering floor loading.
This calculation is a 3 step process:
Step 1. Calculate the area of the ground supports in contact with the aircraft floor.
- Area of each beam = 2 m x 0.5 m = 1 m2
- Two ground supports = 2 m2 total area.
Step 2. Convert Floor Load Limit to Metric.
- Maximum floor load = 210 kg / ft2
- Conversion factor 1 m2 = 10.76 ft2 (3.28 ft in a metre = 3.28 x 3.28 = 10.76)
- Load in kg / m2 = 210 kg / ft2 x 10.76 = 2260 kg / m2
Step 3. Calculate the floor loading limit:
- 2 m2 x 2260 = 4520 kg allowed.
The pallet and ground supports weigh 30 kg. With 4520 kg allowed, this means that 4490 kg may be added.
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This question has appeared on the real examination, you can find the related countries below.
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Greece1
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United Kingdom1
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