The structure built above the earth and underground containing more than two sorts of public utilities, and its facilities including drainage, ventilation, lighting, communication, electricity, and relevant systems of surveillance and detection.
Traditional setting and maintenance | |
Setting and maintenance in Common Duct |
A utility tunnel is a subterranean space for wires, conduits, pipes, and other conveyances used in the delivery of utilities with enough room for a human to enter.
A common utility duct, sometimes called a common utility conduit, is any structure – above, on, or below ground – that carries more than two types of public utility lines. However, the phrase often refers specifically to underground tunnels.
A common utility duct, sometimes called a common utility conduit, is any structure – above, on, or below ground – that carries more than two types of public utility lines. However, the phrase often refers specifically to underground tunnels.
I wanna know about these tunnels in Toronto and Switzerland,would u help me plz?
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