Sustainable Housing: High Desert Design

Eco-Huts for Warm Springs Tribes

Warm-Springs-ProForma-pmapdx-designProjects that integrate building science, stewardship planning, and place design are simultaneously exciting and challenging. Any one of the three core concepts can drive the decision making process resulting in a number of solutions. Our current concepts for minimalist eco structures, or “Huts” in the beautiful High Desert of Eastern Oregon are a fantastic challenge.

PMA was provided an opportunity to create temporary Eco-Huts for both the avid fly fishing community and also the vacationer seeking solitude and natural beauty. The site is nestled on the right bank along a gentle curve of the Deschutes River adjacent to the Warm Spring Tribe Reservation. The site topography has a shallow slope towards the river with basalt escarpments forming the river valley. Landscape species include juniper, white pines, native grass, lavender, and wild flowers.

Warm-Springs-ProForma-pmapdx-designWorking with the The Confederate Tribes of Warm Springs, PMA created a prototype model, easily constructed and assembled off site (test fit), then transported to the site and efficiently erected. The prototype was designed to be economical and constructed from lumber from the local lumber mill that produces products from high desert pines. A contemporary design style was chosen to harmonize with existing mid-century Belluschi homes on the property. Both the Belluschi homes and the Eco-Huts stand in contrast with the landscape and topography.

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Perspective-pmapdx-designConceived to have minimal footprints on the land, the Huts rest on piers elevating the floor above the land and accommodating the undulating landscape. A modular dimension was chosen permitting variation in the Eco-Hut sizes. The floor, walls, and roof planes are built off-site and tilted in place. Exterior stained wood material varying from plywood to sawn boards were chosen to harmonize with the High Desert landscape and be of minimal maintenance to the Tribes. Plywood panels are dressed with battens and either in-set from the wood framing or installed flush to the exterior. Sawn mill boards are stained dark desert grey and applied horizontally to create solid side walls atop of which are placed ribbon windows. The primary entry and view wall is a wood frame window and door façade. A deep roof overhang protects the interior from solar gain. Interiors are exposed panel faces or stained mill boards. Partial height walls denote areas of more privacy. The process of assembling the Eco-Huts on-site and disassembling them in the future determined the material pallet of dimensional lumber and pre-assembled wood window walls. The prototype incorporates modular concepts enabling variation in floor plan and amenities in direct response to the Owner’s request for market flexibility.

Section-pmapdx-designInherent in our design approach for the Eco-Huts is the creation of design solutions that emphasize the uniqueness of Place. The concept includes Land Restoration and Land Stewardship. PMA’s goals when designing the prototypes was to help enhance the natural beauty of the river edge by integrating a built structure into the landscape that has minimal disturbance to the site and will leave no footprint when removed. Willows, sedges, and juniper will be planted to provide riparian cover along the Deschutes River in an effort to increase fish habitat and mitigate flooding. The plantings will also help mitigate visual impact from the river. The lumber mill site’s river edge offers an opportunity to create an employee park and river restoration replacing equipment storage and log staging. The Eco-Huts offer an opportunity to test the integration of stewardship planning and place design.
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Written by Peter Meijer AIA,NCARB, Principal