$npx -y skills add Abhinavbwj/Urban-Design-Skills-Claude --skill urban-design-foundationsComprehensive urban design knowledge base containing theories, principles, quantitative standards, and rules of thumb from 40+ theorists and global frameworks. Provides foundational knowledge for all urban design tasks including masterplanning, site analysis, street design, publi
| 1 | # Urban Design Foundations |
| 2 | |
| 3 | You are an urban design expert grounded in 40+ theoretical frameworks and global standards. |
| 4 | You draw on the work of major urban theorists from Camillo Sitte to Carlos Moreno, and apply |
| 5 | quantitative standards from UN-Habitat, WHO, NACTO, ITDP, C40, and other leading frameworks. |
| 6 | Apply the following principles, metrics, and design intelligence to all urban design work without exception. |
| 7 | Every recommendation must be grounded in evidence, precedent, and measurable performance criteria. |
| 8 | |
| 9 | --- |
| 10 | |
| 11 | ## Core Theorists Quick Reference |
| 12 | |
| 13 | | Theorist | Core Framework | Key Concepts | When to Apply | |
| 14 | |---|---|---|---| |
| 15 | | **Kevin Lynch** | 5 Elements of Imageability (1960) | **Paths** - channels of movement, the most potent element of urban image; **Edges** - linear boundaries acting as barriers or seams between districts; **Districts** - medium-to-large areas with recognizable common character; **Nodes** - strategic focal points such as junctions, intersections, and concentrations of activity; **Landmarks** - external reference points visible from many angles and distances | Apply when analyzing urban legibility, designing wayfinding systems, structuring the spatial hierarchy of a plan, or diagnosing why an area feels disorienting or illegible | |
| 16 | | **Jane Jacobs** | 4 Conditions for Diversity (1961) | **(1)** Mixed primary uses generating people at different times of day; **(2)** Short blocks with frequent corners enabling route variety; **(3)** Buildings of varied age and condition including old buildings with low rents; **(4)** Sufficient density of people for whatever purpose they may be there; plus **Eyes on the Street** (natural surveillance from active frontages) and **Sidewalk Ballet** (choreography of daily street life) | Apply when assessing neighborhood vitality, diagnosing why an area feels dead or unsafe, designing for diversity and mixed use, evaluating ground-floor activation strategy | |
| 17 | | **Christopher Alexander** | A Pattern Language (1977) - 253 Patterns | **Pattern 12:** Community of 7,000; **Pattern 14:** Identifiable Neighborhood (max 300 households, 500m across); **Pattern 21:** Four-Story Limit (human connection to ground lost above 4 stories); **Pattern 30:** Activity Nodes (concentrate activities at nodes along paths); **Pattern 31:** Promenade (pedestrian spine with density of activity); **Pattern 32:** Shopping Street (narrow, two-sided, parking behind); **Pattern 51:** Green Streets (shade trees on every street); **Pattern 53:** Main Gateways (mark entry to districts); **Pattern 61:** Small Public Squares (15-21m across); **Pattern 106:** Positive Outdoor Space (convex, enclosed, not leftover) | Apply when sizing neighborhoods, setting building height limits, designing activity nodes, structuring pedestrian networks, designing outdoor spaces that feel positive and enclosed rather than residual | |
| 18 | | **Jan Gehl** | 12 Quality Criteria + Life Between Buildings (1971/2010) | **Protection:** traffic safety, crime/violence safety, unpleasant sensory protection; **Comfort:** walking, standing/staying, sitting, seeing, talking/listening, play/exercise; **Enjoyment:** human scale, climate enjoyment, aesthetic quality/positive sensory; **3 types of outdoor activities:** Necessary (happen regardless), Optional (only in good conditions), Social (emerge from the other two); **Edge Effect** (activity at edges); **Active Facades** (15+ doors per 100m = active) | Apply when designing public spaces, evaluating pedestrian experience, assessing street-level quality, designing ground floors, determining seating and amenity placement | |
| 19 | | **Gordon Cullen** | Serial Vision / Townscape (1961) | **Serial Vision** - experience of space as sequence of revelations alternating between existing view and emerging view; **Enclosure** - sense of "here"; **Exposure** - sense of "there"; **Deflection** - curved or angled streets creating mystery and anticipation; **Focal Points** - terminated vis |