Structural Engineering Principles
The sophisticated construction techniques passed down through generations
Red Cedar Post-and-Beam Construction
Coast Salish longhouses are among the most sophisticated wooden structures in North America. Their fundamental design uses massive red cedar posts, often over 3 feet wide, to support heavy ridge beams that can span more than 100 feet.
The joinery system uses precise mortise-and-tenon connections, secured with cedar wedges and lashed with cedar bark rope. These structures have withstood Pacific Northwest storms for centuries without metal fasteners.
The roof uses split cedar planks laid in overlapping patterns, creating a waterproof surface that expands and contracts with the seasons.
Kinship and Spatial Organization
A Coast Salish longhouse's interior reflects social hierarchies and family ties. The space is divided into family compartments, each housing an extended family of 8-12 people.
The most important spots are at the center and ends, reserved for high-ranking families and hereditary chiefs. These areas feature carved house posts and painted designs that act as family crests and territorial markers.
Elevated sleeping platforms line the walls, while central hearths provide warmth and cooking space. A clever smoke management system uses adjustable roof openings and interior baffles.
Sxwayxwey Masks & House Posts
The spiritual and heraldic role of architectural carvings
Thunderbird House Posts
Monumental cedar carvings representing the thunderbird, one of the most powerful spirits in Coast Salish cosmology. These posts serve both structural and spiritual functions, protecting the household.
Sxwayxwey Spirit Masks
Ceremonial masks representing ancestral spirits and supernatural beings, often incorporated into house post designs or displayed during winter ceremonies within the longhouse.
Family Crest Displays
Painted and carved family crests mark territorial claims and genealogical connections. These heraldic displays validate a family's right to occupy specific areas within the longhouse.
Virtual Longhouse Experience
Step inside a reconstructed traditional longhouse
UBC Museum of Anthropology Reconstruction
Experience the interior of a traditional Coast Salish longhouse through our partnership with the University of British Columbia's Museum of Anthropology. This faithful reconstruction demonstrates the sophisticated spatial organization and architectural details of these remarkable buildings.
Interior Features Include:
- Central fire hearths with traditional cooking implements
- Elevated sleeping platforms with woven cedar mats
- Storage areas for tools, food, and ceremonial objects
- Carved house posts with family crests and spirit figures
- Traditional smoke management and ventilation systems
Traditional Building Methods
Detailed documentation of construction processes and techniques
Traditional Tools
Stone adzes, cedar wedges, and specialized cutting implements used in longhouse construction. Each tool required years of skilled craftsmanship to create and maintain.
Cedar Plank Splitting
The art of splitting massive cedar logs into uniform planks using wedges and hammers. This sustainable harvesting method allowed trees to continue living while providing building materials.
Preserve Architectural Heritage
Support the documentation and preservation of traditional Coast Salish building knowledge for future generations of builders, architects, and community members.