Why are handholes and manholes shaped oval rather than round?

Handholes and manholes are designed with an oval shape primarily to facilitate easier installation and removal. An oval shape allows for a larger opening, which provides better access for engineers and maintenance personnel when they need to enter or work inside these structures. This is particularly important in tight or constrained spaces where maneuverability is limited.

Additionally, the oval shape helps create more efficient use of space around the entry point, making it easier to pass tools and equipment in and out compared to a circular manhole. This design consideration takes into account the practical needs of technicians who must work with various components and systems within these underground or confined environments.

While other options may suggest various advantages, the primary goal of the oval shape is to enhance accessibility and usability during installation and maintenance processes.