Wood privacy fence behind modular block wall
Wood privacy fence behind modular block wall
(OP)
Can any one share a software or spreadsheet on how to calculate horizontal thrust due to wind loading from wood privacy fence offset behind wall for various heights.
thread255-242873: Lateral support wall
Thanks
thread255-242873: Lateral support wall
Thanks





RE: Wood privacy fence behind modular block wall
I usually check overall overturning and sliding - applying the loads directly to the wall as if it all acts together. I Assume the load from the post foundation distributes at a 45 degree through the soil (plan view) to the back of the wall and use this length as my tributary length.
Also I check local forces for which basically project the forces only the height of wall that is effected.
EIT
RE: Wood privacy fence behind modular block wall
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EIT
RE: Wood privacy fence behind modular block wall
i will check out with them.
RE: Wood privacy fence behind modular block wall
There are 2 types of walls: Walls that are taller than the foundation and walls that are shorter than the foundation (short walls).
For walls taller than the foundation I consider 2 parts:
Part 1 overall stability. Just add the force on the fence or rail to the your overall sliding and OT calcs.
Part 2 is local stability. Here I use the weight of the units, geogrid, and passive soil between units. However I do not use the weight of the foundation, I am considering using the weight of the foundation and removing the passive soil between units. I distribute the force from the foundation at a 45degree in plane view to the back of the wall and also vertically down through the wall for the height of the foundation.
If you go through the calc let me know your questions/comments.
Short wall calc uses same factors as Local stability but also includes passive soil below retaining wall.
Thanks
EIT