The absolute minimum turning radius for ReCon “Series 50” units is a little over 13’. Due to the integral setback of the units, the actual minimum radius grows or shrinks by 2” or so for each additional course… depending on whether it is an “inside” or “outside” curve in the wall. For ease of installation, it is recommended that the radius at the base row of a multiple row wall be no less than about 15’ at the bottom of an inside radius or top of an outside radius wall. From this starting point, you should add about 2” for each additional course as you plan for your radius wall.
Because ReCon “Series 50” units have a fixed length and a built-in setback, ReCon walls that travel along radiuses will tend to run “off-bond” over long curves and as the height of the wall increases. For wall integrity, it is recommended that whenever a point is reached where there is less than 1/3 of one of the upper units bearing on a unit beneath, a partial unit should be inserted into the wall to return the bond to normal. For aesthetic purposes, try to stagger any partial units placed in the wall so they don’t all occur in the same section along the length of the wall face.
Bottom Course Minimum Radius: 15 ft.
Top Course Minimum Radius: 13 Ft. 1 In.