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		ELPLA


	- Description

	- Calculation methods

	- Boundary conditions

	- Geometry and Loads

	- Piles

	- Soil

	- Design of the slab

	- Graphical drawing

	- Drawing sections

	- Tabulating data and results

	- Typical applications

	- New features

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	- Reinforced Concrete Design Examples


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4.1 Calculation methods

-	Besides the eight different calculation methods available in ELPLA to analyze foundations, a new method "Flexible foundation (method 9)" is added. This method can be used for settlement calculations of flexible foundations such as embankments, dams or direct loads on the ground (Figure B-51).

-	System of flexible, elastic and rigid foundations can be analyzed together (Figure B-52).

-	The influence of flexible neighbor foundations or external loads of different arts on the examined foundation can be determined . Until now, it was possible to determine only the influence of elastic or rigid neighbor foundations (Figure B-53).

Figure B-51 Flexible foundation

Figure B-52 System of flexible, rigid and elastic foundations

Figure B-53 Influence of flexible neighbor foundations

- Transitional or rotational spring stiffness can be introduced on nodes for the rigid slab (method 8). Until now, it was available only for methods 1 to 7. The springs can be used for the analysis of the rigid pile caps (Figure B-54).

- Negative contact pressure can be eliminated for methods 1 to 8, if it appears on the bottom of the foundation. Until now, elimination of negative contact pressures was available for methods 4, 6 and 8 (Figure B-55).

Figure B-54 Rigid raft with transitional and rotational spring

Figure B-55 Elimination of negative contact pressure

4 Enhancements in version ELPLA 8.0

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