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Conical manholes, also known as tapered manholes, are a type of manhole structure used in underground utility systems. They are characterized by their conical or tapered shape, with a wider opening at the top that gradually narrows towards the bottom. Conical manholes are typically made of materials such as concrete or precast segments. The design of conical manholes offers several advantages. Firstly, the tapering shape helps to distribute the load more efficiently, allowing the manhole to withstand heavy vertical loads. This structural design makes conical manholes more resistant to deformation or collapse compared to cylindrical manholes. Additionally, conical manholes provide improved hydraulic efficiency. The narrowing shape allows for more efficient flow of fluids or wastewater, reducing the risk of blockages or backups within the system. The streamlined design helps to minimize turbulence and improve the overall hydraulic performance of the manhole. Conical manholes are commonly used in sewer systems, stormwater management systems, and other underground utility networks. They are particularly suitable for areas with high flow rates or where space constraints exist. The tapered design also makes installation and maintenance easier, as the conical shape reduces the overall weight of the manhole and provides better access to the interior for cleaning and inspection purposes. Overall, conical manholes offer structural integrity, improved hydraulic efficiency, and ease of maintenance, making them a preferred choice in various underground utility systems.
