Architectural Design Standards
September 23, 2009
ADS 4.12 Pitched Roofs & Eaves
| Commercial, Mixed-Use, Civic | |||
| I | II | III | IV |
ADS 4.12.1 Intent.
Pitched roofs shall be simple hip, shed, or gable configurations. Roofline offsets shall be provided to lend architectural interest and variety to the massing of a building and to relieve the effect of a single, long roof. The use of alternating dormers, stepped roofs, gables, or other roof elements can be used to add visual relief and articulation to the overall building form.
Standard:
ADS 4.12.2 Allowed Pitch Roof Configurations.
Pitched roofs shall be gable, hip, or shed configurations with overhanging eaves.
ADS 4.12.3 Allowed Slope.
Pitched roofs shall have a minimum slope of four (4) feet vertical rise for every twelve (12) feet of horizontal run; the maximum slope is limited to one (1) foot vertical rise for every one (1) foot of horizontal run.
ADS 4.12.4 Roof Modulation.
A pitched roof more than 90 feet in length shall include a change in parapet height or pitched roof height at least every 90 feet. This change in height shall align with the vertical building bays. Buildings larger than 50,000 square feet shall include both pitched and flat roofs with parapets.
ADS 4.12.5 Roof Elements.
Continuous pitched rooflines greater than 90 feet in length shall include roof elements that align with the vertical building bays and roof modulation. Roof elements shall include, but shall not be limited to, dormers, stepped roofs, gables, or other roof elements that add significant visual relief to the roof line.
ADS 4.12.6 Exclusions.
Buildings in a Mixed-Use District shall be exempt from both the roof modulation and roof elements standards.
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Don’t Do This: |
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The pitched roof lacks any overhanging eaves.
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This building is over 50,000 s.f. and does not contain both pitched roofs and flat roofs with parapets.
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Do This: |
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This pitched roof modulates
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The pitched roof has overhanging eaves.
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Effective on: 1/1/1901