ironing board and cover_graduation table cloth
Storm drain covers play a significant role in protecting water quality in our environments. They help keep contaminants and debris out of stormwater systems, which can transport pollutants directly into local water bodies. For instance, without proper covers, litter, leaves, and other waste can clog the drains, leading to overflow during heavy rains. This overflow can result in untreated stormwater discharging into rivers, lakes, and oceans, causing harm to aquatic ecosystems.
storm drain cover round

There are three different types of manholes: shallow, normal and deep. “Normal” manholes are typically 4- to 5-feet deep and wide enough for the average person to fit in. Shallow manholes are 2- to 3-feet deep, often placed at the start of a sewer branch and in areas with low traffic. Manholes with a depth greater than 5-feet are considered deep and usually have an entry method like a ladder built-in, as well as a heavier cover.