Architecture Portfolio | February 2025

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selected works | architecture portfolio 2025 university of nebraska - lincoln | 2018 - 2023 iowa state university | 2024 - present greta krohn

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table of contents

p. 1

kansas city art institute

03

p. 15

indian cave state park

p. 25

subtraction

04 underland p. 31

kansas city art institute

third year undergraduate design studio / situate university of nebraska - lincoln spring 2022, dr. peter olshavsky kansas city, missouri

collaborators: joshua lorenzen, renee zandt, trever zelenka

Through the design of the Department of Architecture at the Kansas City Art Institute in Kansas City, MO, this project aims to diminish cultural and societal boundaries by placing an emphasis on interconnectivity both within the building and out in the community. Our design utilizes a circulation core that connects each of the programs throughout four floors creating a cohesive space for students and the community.

Situated on a high-traffic corner of the Kansas City Art Institute, the unique and ever-changing facade draws the attention of passing visitors and encourages the exploration of numerous gathering spaces and public programming inside. In conjunction with these spaces, a Hallmark Research Center and the grand learning staircase create an interconnected environment, promoting the connection of a diverse community of people.

interconnectivity

With interconnectivity as a core design principle, our project encourages exploration within the building, on campus, and throughout the community. With the central learning staircase, open gathering spaces, and programming that aims to provide access and resourses for the public, the proposed design promotes the connection of students and the surrounding community.

surrounding context

programmatic diagrams

a green facade

Utilized as a shading technique, a double-screened facade with greenery growing from planter boxes allows for a facade that changes with the seasons. The facade creates unique opportunities for filtered shadows, framed viewpoints, and an ever-changing street presence.

flattened facade diagram

indian cave state park

fourth year undergraduate design studio / collaborate university of nebraska - lincoln fall 2022, sarah karle and michael harpster schubert, nebraska

collaborators: sofia lent, alyssa winkelman, michael rieder

Indian Cave State Park’s oak woodland is a rare sight in the region and it is home to numerous endangered species as well as a rich history and culture. In collaboration with all design disciplines, we worked with Nebraska Game and Parks to design a new visitor center for the park. This project places an emphasis on the visitor experience with themes such as interpretation, education, and preservation.

While prioritizing the preservation of the oak woodland, the soil, and the endangered species, we designed a visitor center that acts as a hub for all visitors entering the site, encouraging them to maneuver through the building’s strategically placed programmatic spaces that provide interpretive experiences and education on the history and cultural significance of the site. Upon exiting the building, visitors are welcomed by an equally engaging and interpretive experience.

1. lobby
2. gift shop 3. interpretive gallery
4. conference room
5. staff break room
6. staff offices
7. storage
8. public restrooms
9. janitorial
10. support storage
11. mechanical/electrical
12. pavilion
13. serving kitchen
14. kitchen storage
15. playscape storage
section b
section

subtraction

fourth year undergraduate design studio / integrate university of nebraska - lincoln spring 2023, jeffrey day lincoln, nebraska collaborators: allison woodring

Hardin Hall currently houses the School of Natural Resources at the University of Nebraska-Lincoln. This project proposal addresses underutilized space and the lack of collaborative space within the School of Natural Resources by combining the educational and investigative aspects of the discipline as well as the social aspects. By designing a rooftop greenhouse for Hardin Hall, our primary goal was to create a comfortable space that not only fosters a sense of community but also celebrates it. Promoting collaboration between students and faculty, the design acts as a new research facility while making existing building more energy efficient and introduces sustainable features.

Greenhouse additions are integrated with the existing 9th floor circulation core, the 10th floor mecahnical room, and the 11th floor equipment room.

The addition of 3 individually controlled greenhouses atop the building replaces the previous 9th floor structure. Two greenhouses function as research greenhouses while the third functions as a collaborative learning and study space.

Highlighted in blue, the existing egress is maintained. The egress on the North end of the tower is accessed by balconies on each floor. The new 9th floor proposal utilizes the existing stairs and central circulation, only updating the elevator with a larger service elevator.

Removal of the existing 9th floor structure, columns, and walls, keeping only the structural columns and walls that support the remaining circulation core and egress.

(N) 4” Rigid Insulation (N) 2.5” Concrete Slab

(N) 1.5” Metal Deck

(N) 1” Air Gap

(N) 3 5/8” Metal Stud Wall with 3” Batt Insulation

(N) 6” Wide CMU

(N) 2” Rigid Insulation

(N) 2.5” Concrete Slab

(N) 1.5” Metal Deck (E) Lightweight Concrete

(N) Suspended Drywall Ceiling System (E) Lightweight Concrete

(N) Face Brick

(N) Glazing with Mullions

(N) 4” Concrete Slab

(N) 4” - 6” Sloped Rigid Insulation

(E) Concrete Joist

Legend (N) - New (E) - Existing EXISTING 8TH FLOOR

interior perspective
interior perspective

underland 04

third year undergraduate design studio / situate university of nebraska - lincoln spring 2022, dr. peter olshavsky san antonio, texas

Once home to species of the Ice Age such as the Scimitar Tooth Cat, the Friesenhahn Cave is known as one of the most significant paleontological sites in the United States. A sinkhole formed in the topography of the site and with the earliest known discovery being in the year 1915, the cave holds a rich history and stories of a past life. As extensive research has continued, thousands of teeth, bones, and fossils have been discovered within the 20,000 single room cave and new cave dwellings open up the possibility for more discoveries and uncovered history.

exploration of boundaries

This project explores the line between the past and the future, focusing on providing an immersive experience, encouraging discovery and growth as a researcher interacts with the programs. An enveloping public archive establishes a unique experience with fossils and artifacts displayed in each space as well as in glass interior walls encasing evidence of a life we have only heard about. The separation of public and private spaces provide an integration between both the past and the future, with programs working together to unify the two and establish a undeniable connection.

In order to protect the existing prehistoric cave and potential new chambers located on the site, the Subterranean Preservation Zone, or the SPZ, is not to be built upon. As a threshold and boundary between the buildable site and the protected portion, the building encourages research and exploration of the site as well as the preservation of the cave, the site, and the history within.

first level plan with site context

axonometric drawing

section a
section b

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