[ad_1] Manholes connect underground utilities to the surface and have covers that allow easy access for maintenance. Some lead to underground vaults, while others connect to a series of pipes. Manhole covers are typically round and can provide a pictorial history of the utilities in a city. A manhole, or maintenance hole, is a pipe […]
[ad_1] A well deck is a deck at the rear of a ship that can be filled with water to launch and recover vehicles. It is used for amphibious warfare and scientific/industrial vessels. The deck can be used for activities and equipment storage when not in use. Engineers must consider ballast tanks and weight distribution […]
