Portfolio by Derek Silverthorn

DEREK SILVERTHORN Master of Urban Design | B.S. Community & Regional Planning

PORTFOLIO

INTRODUCTION This portfolio is not a collection, but rather an evolution of my journey thus far as a planner and designer. Each piece herein is the product of a new learning experience that I have added to my continually evolving skill set. From my beginning as a freshman at Iowa State University who aspired to be a landscape architect, I accidentally fell into the realm of community and regional planning. While exploring the various facets of planning during my undergraduate endeavors, I became immersed in the physicality and interactions of 01

space and place. It was at this juncture that I discovered urban design, and continued this passion by pursuing a graduate degree. After entering professional practice, I have learned an invaluable amount of real-world application, most evidently in regards to the vast amount of politics involved with planning, designing, and implementing anything within our physical spaces and places. In doing so, I have also learned more about myself and my career goals as a planner and designer.

TABLE OF CONTENTS 03....................................URBAN REGENERATION IN LIMA, PERU 13..................................................................................................RADICAL REMIX 21................................................................RECOVERING CAPITOL EAST 23........................................................................................CITY OF OTTUMWA 25.....................................................................................SITE DEVELOPMENT

URBAN REGENERATION In order to develop an effective regeneration proposal for a slum-ridden area of Lima, Peru, thorough assessment of existing conditions surfaced the importance of the river flowing through the city, and its toxic water quality. Pollution, crime, and a lack of pedestrian safety dominate this area of the city, and the following proposal addresses these issues through social and environmental urban design that LINKS, ACTIVATES, and RECLAIMS public space. Area of Focus Ecology: Layering various existing ecological features and conditions in LIma, Peru that are present in the area of focus surface several influencing aspects for this urban regeneration proposal.

ELEVATION

GRADE CONTROL ROCK

ERODING CLIFF

STABLE BANK

CONCRETE WALL

ERODING CLIFF

STABLE BANK

C X

GOOGLE EARTH

PLAN B

GOOGLE EARTH

PLAN C

GOOGLE EARTH

PLAN D

GOOGLE EARTH

BANK COMPOSITION

PLAN A

Army Bridge

Eight Lanes ~45º Banks Concrete Wall ~90º Banks

Sporadic Large Stone

Pedestrian Bridge

Sporadic Vegetation Sporadic Large Stone

Eroding Bank

Dueñas Bridge

Thick Vegetation

Sporadic Vegetation Sporadic Large Stone

Erosion Control

Street Trees Wall Major Road

Pedestrian Path Sporadic Large Stone

Slight Ber m Sporadic Vegetation

EXISTING WATER LINE

LANDSCAPED THOROUGHFARES

POTENTIAL SEWAGE EXPANSIONS EXISTING SEWAGE LINE

MAJOR THOROUGHFARES

Infrastructural Opportunities: Understanding where certain gaps, opportunities, and interconnected pieces occur, the focus area and goals are further defined moving forward with the proposal.

POTENTIALLY KEY THOROUGHFARES EXISTING RESIDENTIAL INFILL DEVELOPMENT

POTENTIAL RESIDENTIAL INFILL DEVELOPMENT Development Patterns: By recognizing currently developing trends of settlers, these highlighted areas and thoroughfares pose opportunities for continuing to develop brownfield infill housing where industries have either vacated or plan to vacate in the coming future.

Area of Focus Observations: Layering various existing aspects of the area that are perceived, conceived, and lived opportunities and threats alike further inform the regeneration proposal process. Highlighted in a lighter grey and outlined in pink is the specific focus area where the proposal will be located. POTENTIAL OPEN SPACE CONNECTIONS

CHURCH

RIMAC POLLUTION

AIRPORT

AVE DUAREZ INFORMAL COMMERCIAL ACTIVITY

RESIDENTIAL INFILL INDUSTRIES MOVING OFF-SITE

AVE FAUCETT EDGE CONDITIONS CREATED BY INDUSTRIES

AVE ARGENTINA WATER LINE AVE COLONIAL UNWALKABLE STREETS PUBLIC HOUSING

UNIVERSITY

SEWAGE

LINK is more than a way to spatially connect the currently disconnected people of Lima. By connecting these dangerous and slum-ridden neighborhoods through ecology, agriculture, recreation, and transportation, the people of Lima may become a self-regulating society. These various connections are spatial interventions driven by social equality.

CIVIC AND RIVER PURIFYING NODE YOUTH PROGRAM NODE

BICYCLE INTEGRATED STREET

INTERMODAL TRANSIT NODE

URBAN AGRICULTURE NODE

EXPANDED TRANSIT LINE

BROWNFIELD INFILL HOUSING

TRANSPARENT FILTRATION SYSTEM Area of Focus Ecology: Because river pollution is an overbearing issue for the city, the proposal addresses this by incorporating social and civic activity with environmental reclamation. The river has been an eyesore and neglected asset, and this park bridge counteracts this by connecting neighborhoods and citizens back to the historic river that has been used since ancient civilization while removing polluting toxins.

CIVIC AND RIVER PURIFYING NODE

SEC TIO

NC UT

WATERFALL

OVERLOOK

N CUT

SECTIO

POST-TREATMENT

TRANSIT STOP

PEDESTRIAN ENHANCED MEDIAN

CHLORINE INFUSER

CARBON INFUSER RETAIL KIOSKS

FILTRATION

PRE-TREATMENT

CROP MANUFACTURING FACILITY

GREENHOUSE

MARKET

COFFEE

POTATOES

DRIP IRRIGATION COLLECTOR SWALE

WASTEWAT

WAREHOUSE

YOUTH CENTER AFTER-SCHOOL PROGRAMS

COVERED SOCCER FIELD

PRIORITIZED BUS L

APARTMENTS MEDIAN LINEAR PARK PARK & RIDE

BUS TERMINAL

Providing the area with agriculture production using recycled water will reduce municipal stress on water supply, create jobs, and activate industrial brownfields

MAIZE

SECTION CU

TER RECYCLER

E ADAPTIVE REUSE

SUSTAINABLE AGRICULTURE NODE INTERMODAL TRANSIT NODE

LANES

ION C

SECT

By tunneling heavy traffic along this major road, pedestrians are provided with safe crossings.

TUNNELED TRUCK TRAFFIC

UNIVERSITY

RADICAL REMIX TO OTHER SITES

SK UN K

RI VE R

8 16

REFERENCES

4 5

3 1

11 12

STAGECOACH RD

1. FRISBEE 2. RAFTING 3. CURLING 4. BASKETBALL 5. VOLLEYBALL 6. SHUFFLEBOARD 7. TENNIS 8. SOCCER 9. WRESTLING 10. PICKLEBALL 11. CROQUET 12. BMX 13. FOOTBALL 14. WEIGHTLIFTING 15. BADMINTON 16. DODGEBALL 17. BOCCEBALL 18. FIELD 19. TRACK 20. HOCKEY 21. ICE SKATING

POPULATION: 1500 SINGLE FAMILY HOUSES: 119 ROW HOUSES: 61 APARTMENT UNITS: 338 MIXED USE COMMERCIAL: 30 OFFICE: 22 PARKING SPACES: 1300

ROADS: 8900 LINEAR FT SHARED STREETS: 5625 LINEAR FT PEDESTRIAN WAYS: 14000 LINEAR FT ATHLETIC SURFACES: 30 ACRES AGRICULTURE: 30 ACRES STORMWATER MANAGEMENT: 8 ACRES

TO 13TH ST

1:1200

Site Plan: The goal of this project was to propose an alternate way of tackling issues of urban development by conjoining productive landscape within the urban fabric of an area within a floodplain.

Section 1: Large-scale stormwater management, a shared street, pedestrian path, and neighborhood street are incorporated in a residential neighborhood block surrounding tennis courts.

Section 2: Linear stormwater management lined with commercial development promotes civic and recreational opportunities within spaces of commerce.

Section 3: Small-scale stormwater management is incorporated within a residential block of mixed housing typologies surrounding a soccer field.

Zoomed Section: A typical residential street block. Common public recreation grounds are surrounded by housing, while also incorporating stormwater management at various scales.

Zoomed Plan: Each street block incorporates mixed housing typologies, stormwater management, unique recreational amenities, and transportation infrastructures comprised of neighborhood streets, shared streets, and pedestrian paths connecting through other street blocks and recreation amenities. Because this site is located within a floodplain, low-impact stormwater management is utilized to minimize flooding risk and the subsequent negative issues. 15

Commercial Corridor Perspective: Storm water management in the commercial corridor provides a boardwalk-esque space. While not only serving functionally, this space also serves as a recreational amenity, commerce attraction, and natural enhancement for civic activity. This is a man-made stormwater management area that forks from the existing river to the west, and reconnecting to the river downstream of the site. Residential Block Perspective: Residents are provided a backyard view and direct access to athletic amenities, while the public is also provided access to these amenities via the dual-sided bounding by a street and shared street.

FLOOD RETURN PERIOD 5-Year Flood 10-Year Flood 25-Year Flood 50-Year Flood

Flood Return Period: The impact that flooding has on this site informs conscious design of strategic stormwater management techniques that are low-impact and minimize dependency on heavy infrastructure.

WATERSHED AREA SERVED BY TYPE OF STORMWATER MANAGEMENT

4 acres of retention pond can serve 20 acres of land

RETENTION POND

0.5 acres of bioswale can serve 2.5 acres of land

1.25 acres of rain garden can serve 2.5 acres of land

PERVIOUS PAVEMENT

2.5 ACRES

5 ACRES

RAIN GARDEN

7.5 ACRES

BIOSWALE

20 ACRES

2 acres of pervious pavement can serve 2.5 acres of land

Green/Blue Infrastructure: Understanding the capacities and inherent requirements of different stormwater management techniques informed infrastructural decisions on this site so as to provide an array of stormwater management techniques at various scales.

Phase One

Phase Two

Phase Three

AGRICULTURE

Complete

ATHLETIC FACILITIES STORMWATER MANAGEMENT ROW PATH SINGLE FAMILY PARKING APARTMENT ROAD OFFICE HOUSE SHARED STREET

COMMERCIAL AREA

RESIDENTIAL NETWORK

MIXED USE COMMERCIAL

STORMWATER NETWORK

68 ACRES 68 ACRES

RECREATION DISTRIBUTION

EUROPEAN CANALS

European canals were used as precedents for organizing urban development around stormwater management.

CHILDHOOD OBESITY

Childhood obesity served as a motivating premise for creating formal and informal, readily accessible, physically active spaces.

ATHLETIC COMPLEXES

Athletic complexes served as a motivating factor for proposing community development within and around athletic facilities, and vice versa.

BRONDBY HAVEBY

Brondby Haveby was used as a precedent for creating small clusters of communities within a larger community.

SHARED SPACE

Shared spaces were used as precedents for achieving a complex, but cohesive, mix of housing typologies, transportation infrastructures, and users.

COTTAGES ON GREENE

Cottages on Greene were used as precedents for fronting residential lots to low-impact stormwater management. 20

RECOVERING CAPITOL EAST

Project Goals: Our team set goals for our project based on the perceived needs of the Capitol East neighborhood in Des Moines.

Proposed Initiative: Our team proposed a low-cost and multi-functional strategy to assist the community in improving their environment physically, socially, and programmatically by implementing modular kiosks that would host various services for residents to utilize. 21

6TH E. 1 ET

E STR

CAPITOL VIEW ELEMENTARY

COMMERCIAL/PUBLIC RESIDENTIAL/PRIVATE PUBLIC SPACE EMPTY LOTS INFORMAL SPACES

EXISTING BIKE TRAIL

LOCATION OF KIOSKS NEW BIKE TRAILS

100 FT

* Site Analysis: Analyzing the existing conditions of this neighborhood led our team to propose ideal locations for our kiosks to be located in order for residents to maximize their benefits. Kiosk Character: Since this neighborhood lacks accessibility to resources, my proposed kiosk served as a community tool shed for residents to borrow from, and improve their properties, while other team membersâ&#x20AC;&#x2122; kiosks provided books, clothing, and food.

* Indicates work of other team members

CITY OF OTTUMWA ve nA

rso

CITY-OWNED LOTS

he cP

1 2 3 2 4

5 7 8 9 10 11 12

1 2 3 4 5 6

13 14 15

8 1

9 10

13 14 15 16 17

18 19

21 22

3 4

N Elm St

d 2n el

E Court St W

ain

SW ap

Co u

St EM

ain

Center St

Morrell Dr

nd E2

HWY 149

r ffe

Stellar Ave

N Adams Ave

W ap

W 2

n eff er so

N Iowa Ave

HWY 34

tS t 3

N Walnut Ave

LEGEND

Road E 2nd St

Property Line City-Owned Lot

City-Owned Lots: This map outlines city-owned lots that are available for development. The map was intended to be distributed to potential developers for their reference. 23

FRONT AND STREET SIDE YARD FENCES

FENCE CHECKLIST + Height no greater than 6’ + Opacity (light, air, vision transmitted through fence) + Fence material and facing + Setback requirements + Vision clearance requirements

3’ Fence

4’ Fence

REAR AND INTERIOR SIDE YARD FENCES

+ Front/street side yard determination (corner lots only)

6’ Fence

+ Fence permit

The finished surfaces of any fence must face toward adjacent properties and street frontages.

VISION CLEARANCE

On corner lots, contact the City to determine front & street side yard determination. All residential fences in front yards must be at least 1’ behind adjacent sidewalks.

STREET

INTERIOR SIDE LOT LINE

REAR LOT LINE

ALLEY

A fence up to 4’ in height, depicted in yellow below, is allowed in a front yard if its surface area is at least 50% open when viewed at a right angle. An example of this is a typical picket fence.

STREET SIDE YARD

REAR YARD AREA

6’ 10’

A fence up to 3’ in height, depicted in orange below, is allowed in a front yard, and its surface area may be completely opaque, or solid.

STREET

A fence over 4’ and up to 6’ in height may be allowed in a front yard if it provides at least 75% of its surface area to be open when viewed at a right angle. An example of this is a typical wrought iron fence. A fence of this height and composition requires city approval.

On corner lots, a solid fence up to 6’ in height, depicted in blue above, may be erected in the rear yard area, highlighted above (back of house to property line), to a point of 10’ from the street rightof-way, when approved by the Zoning Administrator.

ARD NT Y

FRO

4’

Solid fences up to 6’ in height may be constructed along interior side and rear lot lines.

STREET

ARD NT Y

YARD

FRO

4’ STREET

VISION CLEARANCE TRIANGLE

No fence may be more than 3’ in height within 20’ of the closest point where road pavement ends or curb meet at intersecting roads.

6’

STREET SIDE YARD

STREET SIDE

3’ STREET

Depicted in red above is an example of the vision clearance triangle required for fences greater than 3’ in height. In the graphic shown left, a fence 3’ in height, indicated in orange, does not require a vision clearance triangle.

Residential Fencing Brochure: Upon adoption of a new zoning code, this brochure was created intending to make the fencing regulations more understandable for citizens in Ottumwa.

SITE DEVELOPMENT

MILES 0

0.5

Area of Interest: This site is a 63-acre parcel of land in Johnston, Iowa that is bounded by two main thoroughfares, NW 86th and NW 70th, and single family residential development. 25

Land Use R-‐1 (75) R-‐3 CO C-‐1 Roads CD/Undeveloped TOTAL

Acres 11.5 Acres 15.0 Acres 8.0 Acres 4.0 Acres 5.0 Acres 19.5 Acres 63.0 Acres

FEET

1000

Proposed Development: Our team strategy utilized graduated land use intensity based on existing surrounding development. Our team also incorporated existing city plans for future roads and intersections. The colored land uses do not depict literal building footprints, but rather the maximum buildable area for such development on a given lot per Johnston Zoning Code. Land Use: Our team’s strategy conserved virtually all existing vegetation, which was a major goal of our team’s proposal.

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