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Chair of Architecture and Urban Design
Asst. Prof. Dr. Alex Lehnerer
Grand Urban Rules

Design Rules and Design With Rules!

Cities as cultural products are neither ‘built’ nor ‘planned,’ at best they are guided and steered in a certain direction. Therefore, rules and regulations are one of the few tools that are actually suitable to guide future development within such collective and complex urban settings.

We strongly believe that the field of (urban) design should not simply adhere to these standards as some neutrally existing context but should actively engage in discussing them in order to make them subject to design as well. read more

Office for urban regulation

Economic Height

New York / Chicago

Beginning at a certain building height, one encounters the law of diminishing returns, i.e., the sales of additional stories no longer cover the costs of their construction and maintenance. This Economic Height will be taken into consideration when determining a generally valid height limit.

  • Study example from the 1930s of the perpetually equal shape. Volume decreases only by taking away slices from the top in eight steps.
    Image credits: William Clifford Clark and John Lyndhurst Kingston (1930), The Skyscraper—a Study in the Eco- nomic Height of Modern Office Buildings.
  • Comparison of the eight volumetric variants. Result: peak profit at 63 stories.
    Image credits: William Clifford Clark and John Lyndhurst Kingston (1930).
  • Comparison of the eight volumetric variants. Result: peak profit at 63 stories.
    Image credits: William Clifford Clark and John Lyndhurst Kingston (1930).

Rule category

Motivation
Contextual Regimes: issues depending on the immediate context and its preservation, economic and social regimes, traditions, etc.
Managing Bulk: basic stipulations regarding the object's form and bulk
The Kind of Rule
Rule that works as reference, ratio, or dependency.
Rule that is NOT related to any preconceived zone or area.
Rule that stipulates an upper limit.
Domain
Rule that has a strong influence on urban density and its distribution.
Rule that influences programmatic and functional issues.
Rule with direct impact on architectural or urban form.
Rule that regulates building heights.
Scale
Plot/Block Rule: Rule that relates to the scale of a city block or plot.