ecology block walls

huangyhg

ecology block walls
anyone have any good links for the design of ecology block walls?  
what i am looking for is a good force diagram and details with recommended batters, embedments, drainage, any tricky considerations.  
i remember in years past i tried to justify their use, but could never make them work for higher walls.  the wall my client is looking to build is in the order of 10 to 12 feet, and i am nervous with these walls.  i am wondering if i am looking at soil reinforcing here too at that height of wall.
the client just insists using them.  oh well...
thanks in advance.   
mike mccann
mccann engineering
looked at a handout and it appears they do use geogrid at every block layer, length varies by depth.
mike mccann
mccann engineering
found another section of this forum to answer the question entitled "earth retention engineering".
had two threads from four years ago, plus a current one from this year.  thanks anyway.
mike mccann
mccann engineering
these might be of some help: