Ch.13.2 Models of Urban Structure

Three models show that cities grow in rings, wedges,& nodes

CONCENTRIC ZONE MODEL

According to the concentric zone model, a city grows outward from a central area in a series of five concentric rings, like the growth rings of a tree.

SECTOR MODEL

According to the sector model, the city develops in a series of sectors. As a city grows, activities expand outward in a wedge, or sector, from the center.
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Urban Structures - S.Paulo - Brazil