| 摘要 |
PCT No. PCT/SE82/00195 Sec. 371 Date Jan. 28, 1983 Sec. 102(e) Date Jan. 28, 1983 PCT Filed Jun. 1, 1982 PCT Pub. No. WO82/04272 PCT Pub. Date Dec. 9, 1982.An improved concrete block intended to serve as a roadway defining member. The block is in the shape of an elongate concrete body having an essentially triangular cross-sectional configuration with one bottom face and two preferably symmetrical side faces. Each side face is formed closest to the bottom face with a straight threshold portion sloping at a gradient of 1:5, which portion is connected to a second straight portion sloping at a gradient of 1:7 via an essentially circularly arcuate concave portion. |
