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SKYDB Building database

Tall buildings worldwide, with heights, construction status and the companies involved.

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Tall Building Markets

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SKYDB Insights charts showing buildings by decade, status, use, floor count and height

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Professional research into buildings and participating companies.

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Tall buildings, tracked.

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definition strict definition

shaft

An above-ground enclosure for transportation, arranged vertically, horizontally, diagonally, or in several directions.

A shaft is a vertical, horizontal, diagonal, or multi-directional enclosure (other than a bridge) designed for transportation. It may enclose a stairway, walkway, elevator, escalator, moving sidewalk, gondola, or other medium of transportation.

The enclosure can contain a walkway, stairs, or a mechanical passenger-transport system. Its direction is not limited to vertical travel.

A bridge is excluded from this form, and a passage excavated through the ground belongs to a tunnel. The shaft provides an above-ground enclosure around the transportation route.