Grounding grid and structures
Grounding grid and structures
(OP)
Hello,
I hope you may help us again:
Does anybody have modeled the metallic structures that are connected to the grounding grid?
Do the structures have a real effect in reducing the grid resistance or the benefit is only creating an homogeneous potential?
I will thank your comments about this.
I hope you may help us again:
Does anybody have modeled the metallic structures that are connected to the grounding grid?
Do the structures have a real effect in reducing the grid resistance or the benefit is only creating an homogeneous potential?
I will thank your comments about this.






RE: Grounding grid and structures
RE: Grounding grid and structures
Yes, you are right, we are refering to building structures that are "connected" to the grounding grid.
What we want to determine is:
why are they "connected" to the grounding grid?
in order to reduce the GPR, reducing the grid resistance?
We had previously done some grid designsignoring the building structures, however, in this case, we have to include them and we want to understand what we are expecting.
I thank you in advance
RE: Grounding grid and structures
If the building frame is connected to the rebar of concrete foundations, the foundations can reduce grid resistance and will affect the step- and touch-voltages. The building itself will not affect the grid resistance, but may affect touch-voltage by providing a grounded point for someone to touch.
RE: Grounding grid and structures
Final point:
Has anybody modeled the foundations as a part of the grounding grid in an specialised software?
What are the expected value of resistance of the building structure itself, thinking it is steel?
Best Regards
RE: Grounding grid and structures
The resistance of the building steel frame, unless it is a pretty large building, would be negligible.