[TowerTalk] elevated anchor guy points

[Joe Subich, K4IK]

> Interesting point.  The block that is underground is 
> approximately 3 feet wide and 5 feet long (in direction 
> of guy) if memory serves.  Anybody on this list that can 
> figure the lateral force required to tip this block over
> from a pipe extending five feet vertically from the center?

What is the soil's bearing capacity and how deep is the top 
of the concrete block?  You have several components of force:  

   1) the force required to tip over the block if it was 
      setting on the surface of the ground 
   2) the force required to rip the back half of the block 
      through the cone of soil on top of it 
   3) the force required to compress the soil below the 
      front half for the block (to allow the back half 
      to raise) 
   4) the force required to drag the block forward through 
      the soil 

The last three require knowledge of the soil characteristics. 

73, 

   ... Joe, K4IK