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2024-07-11

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Add-on Concrete Foundations

External Stability - Geotechnical Checks
Internal Stability - Reinforced Concrete Checks
- Determination of the design moments
- Definition of reinforcement areas and design strips

Design Specifications

Types for Foundations
Concrete Foundations
Design properties of single foundations
- Foundation plate
  
  Main
  
  Geometry
  
  Reinforcement
  
  Concrete Cover
  
  Slab Reinforcement
  
  Mats
  
  Reinforcing Bars
  
  Mesh and rebars
  
  Soil Properties
  
  Geotechnical Configuration
  
  Concrete Configuration
Additional foundation loads

Sliding considering the passive earth pressure

When taking into account the passive earth pressure, there is a risk of sliding when the design value of the force H_d resulting from this surface in the direction of the displacement is greater than the sum of the design values of the resistance to sliding R_s,d and the earth resistance R_p,d. It is, therefore, necessary to verify that the following condition is met:

H_{d} \leq R_{s, d} + R_{p, d}

Sliding According to EN 1997-1 (with Consideration of Passive Earth Pressure)

Earth resistance

σ_{h, t} = k_{p, h} (γ_{d} \cdot z_{o b e n} + q_{d}) + 2 \cdot {c^{'}}_{d} \cdot \sqrt{k_{p, h}}

σ_{h, b} = k_{p, h} (γ_{d} \cdot z_{u n t e n} + q_{d}) + 2 \cdot {c^{'}}_{d} \cdot \sqrt{k_{p, h}}

Top and Bottom Horizontal Passive Earth Pressure

R_{p, x} = \frac{σ_{h, t} + σ_{h, b}}{2} \cdot t \cdot w_{x}

R_{p, y} = \frac{σ_{h, t} + σ_{h, b}}{2} \cdot t \cdot w_{y}

Resisting Force of Soil Layer in x- and y-Directions

Sliding resistance

The sliding resistance is determined similarly to sliding without considering the passive earth pressure.

Parent Chapter

Sliding