Roof Structure Simulation

 

This study presents a Grasshopper-based simulation developed to explore roof alternatives for the Seorae Global Village Center proposal. Unlike a conventional gable roof, the proposed roof consists of three inclined planes, making it difficult to test design variations through manual modeling alone.

To address this complexity, a parametric script was developed to generate roof forms by adjusting key design parameters. The script allowed multiple roof alternatives to be reviewed quickly while also checking potential conflicts between form, structure, and building equipment. Through this process, the simulation functioned not only as a tool for form exploration, but also as a technical design method for coordinating architectural geometry with structural and MEP requirements.

Overall, the study demonstrates how Grasshopper can support an efficient design workflow by allowing complex roof geometries to be tested, compared, and refined in an integrated manner.

 

Year : 2025

Location : Seoul, Korea

Size : 728.90 m²

Status : Completed

Type : Community Center

Project Director :

Seojoo Lee, Hyojung Kim (I.f), Dongil Kim (I.f.CDL)

Principal Researcher :

Gwangeun Hwang (I.f CDL)

 

Related Project

K Univ. Facade Renovation

Essential Classic

Neo-Classic

Innovation & Performance

This study proposes a renovation and vertical extension strategy for the main Engineering Building at Kyung Hee University under the concept “Where Tradition Embraces Innovation.” The project aims to enhance the building’s symbolic value, improve spatial efficiency, and upgrade environmental performance through façade renewal, window and shading system improvements, rooftop strategies, and interior reorganization.

Based on site investigation, 3D scanning, digital modeling, and analysis of existing structure and rooftop equipment, the study develops several design alternatives: Essential Classic, Neo-Classic, and Innovation & Performance. These alternatives explore different balances between campus identity, classical architectural language, new functional demands, and high-performance façade systems.

The proposed extension strategies include façade improvement, rooftop garden creation, vertical expansion, elevator and restroom extensions, and additional space for faculty offices and laboratories. Overall, the study positions the Engineering Building as a future-oriented campus asset that connects Kyung Hee University’s architectural heritage with contemporary spatial and environmental needs.

 

Year: 2025

Location : Yongin, Korea

Status : Design Proposal

Type : Renovation

Principal in Charge :

Seojoo Lee, Hyojung Kim (I.f), Dongil Kim (I.f CDL)

Design Team :

Seungil Kim (I.f CDL)

Shinjuku City Building

 

This project proposes a compact eight-story rental building in Kabukicho, Shinjuku, Tokyo. Located near Yasukuni-dori and the TOHO Building with the Godzilla Head, the site has strong pedestrian visibility and requires a clear facade strategy that can be easily recognized from the street.

Due to the narrow site condition, the plan focuses on maximizing rentable floor area while responding to legal and evacuation requirements. The building is planned below the 31-meter height limit to avoid the need for an emergency elevator, while the section is adjusted to secure the maximum volume under the road setback regulation. A front evacuation balcony and a rear outdoor stair provide two evacuation routes, and the ground-level frontage is designed to maintain visibility and commercial value.

The proposal explores three facade alternatives. Option A emphasizes a solid grid facade with a pixelated media expression. Option B strengthens verticality through a continuous curtain wall and highlights the horizontal rhythm of the exposed side wall. Option C responds to pedestrian flows from Yasukuni-dori and the TOHO Building by forming an L-shaped facade gesture that creates a stronger urban presence. Overall, the project aims to transform a narrow urban site into a recognizable commercial building through efficient planning, legal optimization, and a distinctive facade design.

 

Year: 2025

Location : Shinjuku, Japan

Size : 1016.75 m²

Status : Proposal

Type : Commertial

Principal in Charge :

Seojoo Lee, Hyojung Kim (I.f), Dongil Kim (I.f CDL)

Design Team :

Suyeon Seo (I.f)

Collaboration :

M3 Systems, Atelier KOMA

Connective Monument

 

Connective Monument: A Modular Facade Connecting City, Brand, and Customer

Connective Monument is a facade renovation proposal for Store Cheongdam that transforms the building into a bold and interactive brand landmark. Located in Cheongdam, where high-end flagship stores and iconic brand facades are concentrated, the project responds to the site’s urban character by creating a distinctive exterior that is both luxurious and memorable.

The design is based on the idea of connection — connecting the city and the building, the existing Store identity and a new spatial experience, and the brand with its customers. The facade is composed of three-dimensional star-shaped modules inspired by brand’s symbolic value. Each module can rotate and combine in multiple directions, creating a dynamic surface that expresses the brand’s bold and playful tone.

Beyond visual impact, the facade is designed as a communicative surface. Through lighting and color scenarios, it can respond to product launches, seasonal events, and urban festivals, allowing the building to engage with the city over time. The modules also create a layered experience from the inside, filtering light and views while offering potential use as display shelves or interior elements.

The use of lightweight GFRP modules supports efficient fabrication, installation, removal, and reuse. By applying an independent facade structure, the proposal minimizes interference with the existing glass facade and store operation. In this way, Connective Monument presents Store Cheongdam not simply as a retail building, but as a flexible urban interface that embodies Samsung’s future-oriented brand identity.

 

Related Project

 

Year: 2025

Location : Gangnam, Seoul, Korea

Phase : Design Development

Type : Commercial Facade Renovation

Principal in Charge :

Seojoo Lee, Hyojung Kim (I.f), Dongil Kim (I.f.CDL)

Design Team : Hyunjoo Kang (I.f)

S Project

 
 

This project envisions a “Connective Monument”—a spatial symbol that links architecture with its urban surroundings, connects brand to customer, and creates seamless transitions between environments. Positioned in a context where high-end flagship stores and luxury brand headquarters are concentrated, the design responds with a visually iconic and sophisticated presence that reflects both prestige and originality.

From an urban perspective, the building acts as part of the cityscape, catching the public’s eye naturally while transforming in response to social events and seasons—offering a dynamic interaction between architecture and society. As a spatial connector, it retains design continuity with existing Samsung stores, reinforcing a unified brand identity while introducing a fresh experiential layer.

At the street level, the design emphasizes aesthetic presence and brand clarity. The front-scape is crafted to naturally draw customers inward, creating an inviting threshold that encourages participation and exploration. The building’s façade, composed of three dimensional modular elements inspired by star symbol, rotates and interlocks vertically and horizontally. This kinetic composition captures Samsung’s brand tone of Bold & Playful, turning the structure itself into an interactive and expressive statement of the brand’s future-forward vision.

 

Related Research

 

Year : 2025

Location : Seoul, Korea

Status : Design Proposal

Type : Commercial Facade Renovation

Principal in Charge :

Seojoo Lee, Hyojung Kim (I.f), Dongil Kim (I.f CDL)

Design Team :

Hyunjoo Kang (I.f)

Panelization Standard Details

 
 

Composite building structures offer several advantages over traditional materials, including faster installation, increased cost-efficiency, higher energy efficiency, and longer life cycles. LiteTex®, a cutting-edge composite laminate created by Axia Materials, incorporates continuous fibers—such as glass, carbon, or aramid fibers—for reinforcement and uses a proprietary resin system for its matrix. This innovative composition enables LiteTex® to outperform metallic materials, offering a lighter weight and greater strength by comparison.”LitePan® is an advanced Composite Structural Insulated Panel (C-SIP) that employs LiteTex® as its outer face material and foam plastics as its insulation core. This product has been employed in numerous energy-efficient, volumetric construction projects due to its multifunctionality—it simultaneously provides structural support, insulation, and waterproofing. LitePan® offers extensive coverage, with single panels capable of spanning up to 9-feet by 40-feet, while maintaining an extremely low weight of approximately 1.12 lb/ft2 (5.47 kg/m2) for a 4-inch (101.6mm) thick panel.”

The distinctive features of LitePan® have delivered unparalleled value to the construction industry, enabling exceptionally rapid construction and airtight sealing. These capabilities facilitate a level of energy efficiency that meets Passive House standards, providing cost-effective solutions that save both time and energy in building projects.

The primary objective of this catalog is to furnish comprehensive elucidations regarding the exemplary versatility of LitePan® and its adherence to prevailing architectural standards. Additionally, it endeavors to furnish intricate delineations pertaining to specific applications. We express the anticipation that, upon the prospective utilization of this product by regional contractors or construction entities, this catalog shall prove to be an invaluable resource, offering substantial aid and guidance.

 

Year : 2023

Size : 92.90 ㎡

Structure : Construction Type V (Lightweight Wood Structure with Insulated panel attached)

Type : Residential

Status : Completed

Principal in Charge : Seojoo Lee, Hyojung Kim (I.f), Dongil Kim (I.f.CDL)

Desigin Team : Seungil Kim (I.f.CDL)

 

Related Research

Pixel Haus No.1

 
 

PixelHaus is a brand developed by Axia that will feature a range of proposals and sample houses using LitePan Board for both wall and roof materials. The aim is to showcase the versatility and effectiveness of LitePan in various housing designs intended for the US market. These designs will cater to different needs, from small ADUs (Accessory Dwelling Units) with an area of around 600 square feet to larger two- story single-family homes spanning up to 2,000 square feet.

The concept behind PixelHaus is to demonstrate how LitePan can be seamlessly integrated into different types of residential buildings, offering both architects and builders a wide array of options for incorporating LitePan into their projects. By utilizing LitePan for both wall and roof materials, “PixelHaus™ is designed to showcase the exceptional energy efficiency, inclusive of superior thermal insulation capabilities, and the robust structural integrity inherent in LitePan technology.”

 

Related Research

 

PixelHaus intends to provide a platform for presenting innovative housing solutions that prioritize energy efficiency, sustainability, and ease of construction. By leveraging LitePan’s lightweight yet robust characteristics, PixelHaus seeks to redefine traditional housing construction methods and offer more efficient and environmentally friendly alternatives.

The proposals and sample houses presented under the PixelHaus brand will serve as practical examples of how LitePan can be utilized effectively in real-world construction projects. Each design will be carefully crafted to showcase LitePan’s capabilities in enhancing thermal performance, moisture resistance, and overall building durability.

Overall, PixelHaus represents Axia’s commitment to promoting LitePan as a premier building material for modern residential construction, offering solutions that meet the evolving needs of homeowners, architects, and builders alike.

 

Year : 2023

Size : 92.90 ㎡

Structure : Construction Type V (Lightweight Wood Structure with Insulated panel attached)

Type : Residential

Status : Completed

Principal in Charge :

Seojoo Lee, Hyojung Kim (I.f), Dongil Kim (I.f.CDL)

Desigin Team : Seungil Kim (I.f.CDL)

열수축 폴리머 재료를 활용한 디자인 및 제작방법론의 건축적 적용에 관한 연구

열수축 폴리머 재료를 활용한 디자인 및 제작방법론의 건축적 적용에 관한 연구

A Study on Design and Fabrication Methodologies with Heat-Induced Self-Reinforcing Polymer

(Background and Purpose) This research paper aims to investigate a unique design process that digitally manipulates the morphological transformations of a heat-induced self-reinforcing polymer. The principle of the heat-induced contractile polymer has long been implemented in various industries such as packaging and fashion. While other industries have embraced the full potential of the particular soft material, it is still a relatively new material to be further explored in the field of architecture. Yet, with the application of computational tools to architectural form-making and fabrication methodologies, morphological and structural behaviors of heat-induced polymer could become an active material for architectural projects.

(Method) There are two modes distinguished in the presented research methodology. First of all, the author conducts the physical investigation of the material system of heat-induced polymers as a design driver. In this stage, the author computes the material behavior of the polymer sheet considering the material thickness of the polymer sheet and the traits of contractile deformation based on the time of heat exposure and the level of temperature on the material. Second, the author explores the digital investigation of a transition system of the physical properties to digital simulation then from the digital model to a fabricatable artifact based on the physical investigation of the heat-induced polymer sheet. In this stage, A series of computational strategies are applied to evaluate and analyze the design that eventually led to the making process. Finally, the latter part of this research paper showcases a built case study titled De:flatable. The study demonstrates the process of digitally comprehending the morphological transformation of a soft material, ultimately realizing the most optimal form through rapid prototyping with varying parameters.

(Results) The presented paper proves the resilience of the design process and aims to revisit the reciprocity of physical and digital, of formal and structural, and of design and fabrication through comparing the physical scale models and digital form-finding prototypes. And in lieu of the spirit of recalibration, the research is experimentation in imprecision.

(Conclusions) Not only an imprecision by the nature of the polymer’s intrinsic soft materiality but the imprecision of the digital translation of the morphological behavior of viscoelasticity. But as the following research demonstrates, it is within the imprecision and the infidelity of both physical material and computation tools that interpret the material that leads to the production of a form and a design process that hints at new possibilities in architectural design.

Kim Dongil. (2022). A Study on Design and Fabrication Methodologies with Heat-Induced Self-Reinforcing Polymer. Journal of Korea Intitute of Spatial Design, 17(2), 25-36.

https://www.kci.go.kr/kciportal/ci/sereArticleSearch/ciSereArtiView.kci?sereArticleSearchBean.artiId=ART002823029

Related Project

 

A Study on Architectural and Spatial Application of a Bending-Active Sheet Material

 

A Study on Architectural and Spatial Application of a Bending-Active Sheet Material

활성 탄성면 재료의 건축 및 공간적 적용에 관한 연구

(Background and Purpose) Bending-active materials have been widely utilized in fashion, furniture, product design and even in creating new spaces and spatial experiences. In applying bending-active surfaces as design drivers, architecture has found it challenging to track and document the material’s morphological behaviors, to fully control the variables for design and fabrication. Also, architectural studies have considered innate structural and formal uncertainties of the bending-active materials to be too great a risk to utilize it as an inhabitable space. However, with the integration of current computational tools into the design and fabrication processes, the natural behaviors of elasticity and resilience in response to bending and other forces, can now be applied to extract morphological and structural investigations in architecture. This paper aims to demonstrate the application of computational tools to the architectural design process of a bending-active surface, from conceptual form-finding to full-scale model fabrication.

(Method) A plastic polymer sheet, which is one of the most widely available bending-active surfaces, will be central to the design process. The methodology is focused on a computational analysis on softness of the plastic polymer sheet, morphological behavior, and structural integrity in the digital platform. Simultaneously, iterative design exercises occur through physical fabrication of the digitally produced results, in order to achieve a complete reciprocity between the digital and the physical platforms. Two case studies are introduced in this paper based on this same mode of study. One exercise begins from the design of local scale modules and develops into the global scale geometry. On the other hand, the second exercise begins from the design of a global scale geometry and proceeds to segment this global geometry to produce local geometries for fabrication purposes.

(Results) The two exercises produced the following results. First, through a reciprocal design process between the digital and physical platforms, a complex novel form that is aesthetically and structurally successful can be realized. Second, by interpreting a widely available material into the digital platform, customized computational tools allow form-finding and analysis of the final geometry to produce automated cut patterns for physical platform translation. Lastly, the assembly process itself can be designed so that a large scale structure can be assembled by a small group of people with no particular expertise and no secondary scaffolding or sub-structure, due to the lightweight material and the structural integrity a bending-active design inherently carries.

(Conclusions) This paper expects to further studies that examine material, formal, and structural design and fabrication of various bending-active surfaces.

Kim Dongil and Chung, Yeseul. (2022). A Study on Architectural and Spatial Application of a Bending-Active Sheet Material. Journal of Korea Intitute of Spatial Design, 17(1), 11-22.

https://www.kci.go.kr/kciportal/ci/sereArticleSearch/ciSereArtiView.kci?sereArticleSearchBean.artiId=ART002812654

 

Related Research

 

42W 28th St.

 

Year : 2021

Location : New Yourk, U.S.A.

Size : 392.90㎡

Status : Completed (Renovation)

Type: Commercial, Hospitality

Principal in Charge : Dongil Kim, Seojoo Lee (I.f)

Collaboration : Eco Architects

Fibrous Bud

The Lamborghini Road Monument is a case study of fibrous tectonics that combines digital computation, material behavior, and efficient fabrication. The project is composed of pod-like assemblies fabricated by weaving carbon and glass fiber threads around a reusable formwork made of bending-active carbon-fiber rods. This flexible formwork can be adjusted into various shapes and lengths, allowing the system to respond to different design conditions while maintaining a simple and efficient construction process.

The project uses physics-based computational modeling to control both the overall form and the individual components required for fabrication. Through automatically generated data, each pod can be produced with accurate dimensions and assembled as part of a larger structural system. Since the prefabricated components can be transported to the site in groups and quickly installed onto a prepared foundation, the construction process minimizes on-site labor and improves efficiency.

Overall, the project demonstrates how digital design and material logic can work together to create a lightweight, adaptable, and repeatable architectural system. Rather than treating form as a fixed object, the proposal explores a soft tectonic process in which computation, fabrication, and material performance are directly connected.