Tree grates are designed to protect the base of trees planted in urban environments, especially in areas with heavy foot traffic. Their primary function is to prevent soil compaction around a tree’s root system, allowing for proper aeration and water penetration. This is crucial for the health of urban trees, which often face challenging conditions including pollution, drought, and limited space for root expansion.
Cast iron manhole covers are manufactured in foundries where scrap steel collected is melted and alloyed. The melt is poured into casts or molds to manufacture the required design and shape of the manhole cover. The design and shape of manhole covers vary as per requirement. To ensure that the molten metal consists of the correct percentage of iron and alloying metals, proper analysis is carried out prior to casting. Bar test specimens of the same molten metal that will be used for the manhole covers are cast and tested for strength and ductility. The test is carried out by placing the bar in a tensiometer that pulls on the bar ends till failure occurs. Tests have showed that cast iron components have higher safety factors than those of ductile iron.
Stop bollards are short, vertical posts typically made from durable materials such as steel, concrete, or plastic. They come in various sizes and styles, making them versatile tools for different applications. The primary function of stop bollards is to delineate spaces, preventing vehicles from entering designated pedestrian zones, thereby enhancing safety for those on foot or on bicycles.