The simple bearing capacity:
A foundation construction base bearing capacity is fixed at 4.5 and modifiable in the variable BaseSupportPower in the BP_BuildMng
A foundation construction is a construction able to be put on the ground and capable of supporting other constructions.
There exist 3 types of foundations constructions:
- Square foundation (BuildPart_SquareFoundation)
- Triangle foundation (BuildPart_TriangleFoundation)
- Pillar (BuildPart_Pillar)
The other kinds of construction can be either put on the ground or a floor, but in that case they cannot support other constructions, or they can support other constructions but they have to be themselves supported by another construction first.
The bearing capacity is reflected on the other constructions: it will decrease if it is a ceiling, or will remain identical to its parent otherwise.
In this specific case, the square foundation is therefore the foundation construction that will support the wall placed on it with a bearing capacity of 4.5.
The wall will also have a bearing capacity of 4.5 because the support is done vertically.>
In this case, we have a square foundation supporting a ceiling, as well as a wall also supporting a ceiling.
The ceiling supported directly by the foundation will have a bearing capacity of 3.0, because the support is done horizontally and the SquareCeiling has a loss of 1.5 (4.5 - 1.5 = .0),
The bearing capacity loss value is editable for each construction type in the Data_BuildPart in the column SupportLost
The wall will retain 4.5 of bearing capacity, but the linked ceiling attached to the wall will retain 3 of bearing capacity.
Here we have a square foundation supporting a ceiling that supports a wall. The ceiling therefore has, like the example before, a bearing capacity of 3.0, and the wall will also get a bearing capacity of 3.0.
We can put 3 SquareCeiling in a row before being forced to put another support in order to continue (3 x 1.5 = 4.5), but we can put 4 TriangleCeiling bacause triangle ceilings have a loss of 1.0.
There can be up to 4 stacked TriangleCeiling or 3 TriangleCeilings and 1 SquareCeiling, for instance.
The multiple bearing capacity :
The bearing system takes into account that a construction can be supported by several other constructions at the same time, and conversely, a construction can support several.
And for each of the constructions we record all the supports: this means if a support is destroyed, if at least one support with enough bearing capacity is still there, nothing else will be destroyed.
For instance, here we have a square foundation (1) supporting a wall (2) which supports a ceiling (3), which supports another ceiling (4), supporting a wall (5) which is also supported by another foundation (6). Which means all of the bearing capacity of the second foundation
will also be reflected in the same way.
Therefore, if we take the left ceiling, it will have a bearing capacity of 3.0 coming from the wall, but also a bearing capacity of 1.5 coming from the ceiling next to it.
If we erase the foundation on the right, nothing else gets destroyed because the first foundation has enough bearing capacity to support all of what remains.
As we can observe after destroying the foundation on the right, everything else stays in place becausethe other foundation supports the wall with a bearing capacity of 4.5, therefore the ceiling has 3.0, the next ceiling has 1.5, and the wall at the end of the chain has a bearing capacity of 1.5.
The exception:
The pillar (BuildPart_Pillar) also has a base bearing capacity of 4.5 but any ceiling put directly on top of it will also get a bearing capacity of 4.5, meanwhile every connected construction will obey the usual rule, as explained above.
