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BIM Architecture: Huangjia Primary School Expansion – Foundation and Structural Design

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

“Form is not influenced by personal emotions, while design is the designer’s own. Design is a behavior related to the environment… Form is not related to environmental conditions.” – Louis Koon, Form and Design

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

The project is situated at No. 84 Wangjiachang Shangjie, Huangjia Town, Shuangliu District, Chengdu City, Sichuan Province.

Huangjia Town lies on the outskirts of Chengdu city and has yet to undergo formal urban planning, maintaining a largely natural and organic state. The area surrounding the school features mostly one- and two-story residential buildings, arranged according to the existing street layout. On the side of the street where the school stands, the street surface is relatively orderly, but the buildings behind vary in height, creating an organic yet somewhat chaotic impression.

The school originally comprised two teaching buildings aligned along the street. However, their orientation differed from the surrounding regular structures, making them stand out prominently within the streetscape. Upon our initial site visit, confronted with the disordered surroundings and the dilapidated original teaching buildings, we aimed to introduce order and reinforce the school’s presence. This concept became the foundation of our design.

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

Currently, Huangjia Primary School has 3,870 square meters of teaching and auxiliary buildings, accommodating 13 classes. In recent years, Huangjia Street has developed rapidly, leading to an increase in student enrollment. However, the existing classrooms and facilities are severely insufficient to meet modern educational demands. Thus, campus expansion is necessary.

The project is divided into two main areas: the teaching area and the cafeteria. The new teaching area will house 36 classrooms, a library, an academic lecture hall, and various supporting functional rooms.

The expansion site features a sloped terrain with a significant elevation difference. There is a 9-meter height gap between the existing teaching buildings and the sports field. Previously, these areas were connected only by a straight staircase and stands, posing serious safety risks.

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

Order Integration

Teaching Area

The expanded teaching area is divided into distinct volumes based on function, each inspired by a square geometric prototype. These volumes expand into flat geometric units arranged neatly at varying heights along the slope. The differing heights create a rhythmic, three-dimensional order through stepped drops. Various geometric shapes are connected organically by circulation pathways, forming scattered clusters that integrate harmoniously with the surrounding environment.

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

The main teaching blocks are positioned within setback limits, aligned with the existing campus architectural texture and site boundaries. The combination of public spaces such as lecture halls and libraries, along with the varying terrain elevations, creates a staggered and orderly campus environment.

Viewed from the playground, these volumes form a cohesive, orderly ensemble. Each functional volume features distinct facade treatments, highlighting rhythm and contrast, which allows easy identification within the overall composition.

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

Cafeteria Area

Due to specific functional requirements and site constraints, the cafeteria is designed as a single building composed of stacked square volumes arranged in staggered forms. Multiple entrances and exits at different elevations accommodate the complex height differences on site and resolve circulation challenges.

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

Audience Area

The existing 9-meter height difference between the teaching area square and the sports field was previously bridged by straight staircases in the stands, posing serious safety concerns. The new grandstand area features a multi-run staircase and ramp system with a zigzag configuration, enhancing circulation safety and ensuring barrier-free access on campus.

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

Detailing and Order

To emphasize the building’s volume, the facade treatment is intentionally restrained. Regular colonnades and simple window openings are used to maintain the purity and clarity of the architectural form without excessive embellishment.

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

Conclusion

Every project’s completion brings both joy and moments of reflection.

This project was developed within strict material constraints, balancing input from all stakeholders while advancing quickly under a limited budget. Our goal was to elevate the quality of the campus environment for students through thoughtful spatial design despite these limitations.

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

Project Drawings

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

△ Surrounding Context Map

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

△ Site Elevation Difference Diagram

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

△ Block Formation Diagram

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

△ Vertical Circulation Expansion in Teaching Area

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

△ Cafeteria Block Formation Diagram

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

△ General Layout Plan

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

△ First Floor Plan

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

△ Second Floor Plan

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

△ Third Floor Plan

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

△ Fourth Floor Plan

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

△ Fifth Floor Plan

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

△ Teaching Area Section

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

△ Front View of Teaching Area

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

First Floor Plan of the Cafeteria

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

Second Floor Plan of the Cafeteria

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

△ Cafeteria Third Floor Plan

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

Fourth Floor Plan of the Cafeteria

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

△ Canteen Section Diagram

BIM Architecture | Huangjia Primary School Expansion Project - Order Geometry/Foundation Building

△ Canteen Elevation View

Project Information

Project Name: Huangjia Primary School Expansion Project

Designer: Chengdu Benmo Architecture

Company Official Account: Original and Final Building

Design & Completion Year: Designed in January 2019, Completed in July 2021

Main Creators and Design Team: Shi Lei, Liu Bo

Project Address: No. 84 Wangjiachang Shangjie, Huangjia Town, Shuangliu District, Chengdu City, Sichuan Province

Building Area: 9,956.13 square meters

Photography Copyright: Existence of Architecture

Partner: Sichuan Kuanjing Architectural Landscape Design Co., Ltd

Materials: Soft porcelain, glass, concrete

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