Sewer Manhole Cover Detail With 24 Inch Cast Iron Lid Section

This sewer manhole cover detail drawing illustrates the structural construction and sectional layout of a sewer inspection chamber with a cast-iron cover system. The drawing shows a circular manhole chamber constructed with brick masonry walls supported on a reinforced concrete base. At the top of the chamber, a cast-iron manhole cover with a diameter of approximately 24 inches is installed with a weight specification of about 110 kg, providing secure access to the sewer inspection point. The cover is supported by a cast iron frame, also known as a brocal, which distributes the load from the cover to the surrounding concrete collar. The detail includes the elevation of pavement above the manhole and shows how the chamber opening aligns with the road surface level to allow maintenance access.