Shaped bricks for ground cover are in pairs of identical and mirror-image prisms to give water drainage and allow vegetation growth with less loading on the ground surface

摘要

The shaped bricks for ground laying are in pairs (A,B) in identical and mirror-image prisms, with a rectangular base (A0) and two trapezoid side surfaces (A1,A3). Two trapezoid surfaces (A2,A4) form the upper and lower standing surfaces. The end surfaces (A5) are in a parallelogram shape, at an angle to the base surface which is not equal to 90 deg .