3718x
002958
2021-04-29

Bending Design of Block Foundations

How is the static depth d calculated in the bending design of block foundations (calculation as equivalent beams)?


Answer:
The static depth d for the "Safety against bending failure of equivalent beam" design results from the plate thickness minus the defined concrete cover on the bottom side of the block foundation, the diameter of the regular bending reinforcement of the plate on the bottom side in both directions, and one-half the diameter of the reinforcement of the "equivalent beam".


The static depth d is considered differently in both directions (bending about the x- and the y-axis) in this case. This must be taken into account when evaluating the calculation in the result table "2.2 Governing Design Criteria - Bending Failure of Equivalent Beams".