[TowerTalk] Fwd: Cad welding vs clamps

[Jim Lux]

On 10/24/14, 3:56 AM, john at kk9a.com wrote:
> That depends on your soil conditions.  Some of us have shale, rock and/or
> hard clay making it impossible to push in a full 8' ground rod.
>
>
> From:	Hans Hammarquist via TowerTalk <towertalk at contesting.com>
>
> What would work if you bury it deep enough. I would believe 8 feet of strap
> buried 4 feet down should be equal to an 8 foot rod pushed down 8 feet.
>
>
> I do think it is less work to push the rod down than to dig a trench for the
> strap.
>
>
> -----Original Message-----
> From: Drax Felton <draxfelton at gmail.com>
>
>
> What if one were not to use a ground rod and just bury the strap?
>
>

The code allows you to drive the rod at an angle.

 From an electrical standpoint, you don't need to bury the strap 8 feet 
down.

IEEE 142-1999 Table 13 has formulas for all kinds of configurations of 
rods, wires, straps and the like.  there's a new version from 2007 out.
If I get ambitious, I'll put some of the equations online, but they're 
long series expansions, so a bit tedious.

Anybody have a preference.. as matlab/octave/fortran/c equations or as 
Excel Spreadsheet formulas?