A cast iron column for blocking parking and protecting pedestrians is cylindrical in cross-section φ12 cm, height 60 cm visible above the sidewalk and a total height of 67.5 cm with a ring φ13 cm, the piece that is anchored inside the sidewalk is 13 cm. The pillar is made of special specification cast iron in order to withstand impacts and have a long life span. It has a smooth and shiny surface. It is first painted with a primer and followed by 2 layers of its final paint.