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BIM Architecture: Rainhouse – Carpenter's Home by Lowercase Architecture

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

Memory

Over the past two decades, road transportation has become a defining feature of the hilly landscapes in eastern Chongqing. The winding roads, intertwined with diverse terrain, have significantly improved travel for local residents.

Alongside these developments, villagers have gained access to increased income, subsidies, tap water, natural gas, and fiber optic networks in their homes. Occasionally, loudspeakers at the entrance broadcast lively programs from the Central People’s Broadcasting Station promoting prosperity and public welfare. Although these scenes might feel like a 30-year-old memory, they are very much alive today.

For the last fifty years, traditional new home construction in eastern Chongqing rarely considered orientation. Securing an effective building area on limited land, while respecting compass directions, remains crucial.

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

In my youth, the three-bedroom old house often faced the sunset, with a 200-year-old yellow horn tree standing proudly at the center of the view. The backlighting created a silhouette that remains unforgettable. The walls were built from stone, homemade cement hollow bricks, and precast reinforced concrete floor slabs—typical materials for 1980s residences. The small fan-shaped windows lacked glass, and the wooden frames were on the verge of collapse.

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

These memories gradually transformed into a landscape that now guides the architect’s original vision.

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

Combination

The new building replaces the previous unsafe structure, located remotely to avoid farmland and forest land boundaries, while ensuring convenient transportation and an ideal position.

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

I envisioned a simple and well-proportioned house, where living functions are broken down and arranged across different site levels for relative independence. The hall is placed at the highest elevation, connected to the entrance by a corridor, serving public functions. The bedrooms are located at a lower level, offering inward views and privacy.

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

The traditional stone wall construction in the region acts as a connective “relationship” between various functions. It creates courtyards of different scales to fulfill the needs of distinct functional units for “observation” or “use”. This inward-facing living space blurs the orientation typical of traditional architecture, yet light still filters in from the west, resonating with the unique spirit of the old house.

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

The main hall and rooms feature steel-structured metal roofs. While they might seem like ‘foreign objects’ in the traditional setting, they blend with the current rural landscape, where steel structures and metal roofs are common due to their waterproof quality, affordability, and ease of construction. The horizontal hall and the triangular roof of the rooms create a contrasting yet harmonious relationship, emphasized by their height difference. Large glass surfaces facing the courtyard blur the boundary between indoors and outdoors, inviting nature inside.

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

The tower, serving as a visual extension, is centrally located and adaptable.

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

The shed in the lower house contrasts with the main building by preserving traditional construction methods and materials. The roof features a three-part slope, rooted in traditional truss design, with wooden columns and beams as the primary load-bearing elements. These were recycled from green tiles of neighboring homes.

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

Build

Bricks, stones, and carpenters have traditionally been central to construction, covering the entire building process. With the rise of urbanization in the 21st century, steelworkers and welders have joined the field. Control over construction benefits from the expertise of master carpenters, who help reconcile the unintentional inaccuracies that may arise from other trades.

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

Design Drawings:

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

▲ General Layout Plan

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

▲ Plan View

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

▲ Sectional Perspective

BIM Architecture | Rainhouse · Carpenter's Home/Lowercase Architecture Firm

▲ Axonometric Diagram

Project Information:

Architectural Firm: Lowercase Architectural Firm

Address: Qiuyubao, Pingshan Town, Dianjiang County, Chongqing City, China

Category: Collective Housing

Lead Architects: Li Wei, Yuan Yuan, Li Liang

Design Team: Zeng Wenjuan, Jiang Peng, Yuan Shuai, Wang Simin, He Yuqing, Ma Wei, Hu Cuiying

Building Area: 195.0 m²

Project Year: 2019

Photographer: He Lian

(BIM Design)

Principal: Li Qixiao

Structural Design: Wu Haisheng

Landscape Design: Lowercase Architecture Firm

Construction Team: Li Fengwei Team

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