On some of the buildings, there are open drains that serve to drain floodwater to the main drainage channel. Thus there will be no puddles in that area. The open drains require cover so that nothing falls into them. A cover that is commonly used in open drains is cast iron grating.
Drainage Castings
Ductile Iron Manhole Cover: Specifications & Manufacturing
What is the ductile iron manhole cover? Underground space or utility lines such as drainage systems and telephone wires are always found in urban centers. Regular maintenance is required in that subsurface location. As a result, technicians must pass through an access hole the size of a human body to perform maintenance. This hole is […]