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River Structures
River Structures
Juliaetta, ID, United States
Project of the Day on Oct 06, 2016
Project Featured on Oct 06, 2016
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River Structures
Juliaetta, ID, United States
Project of the Day on Oct 06, 2016
Project Featured on Oct 06, 2016
Type
STATUS
Built
YEAR
2012
SIZE
3000 sqft - 5000 sqft
Site Size: 70 acres
Project Size:
The Flood Plain House: 2310 square feet conditioned space
The Fishing House: 1139 square feet conditioned space
Project Name:
River Structures
Program:
At the end of an existing single lane unpaved road cut into a hillside near Juliaetta,
Idaho, the clients wanted to create a live work space for their winery and vineyard
preserving the most ideal exposure and soil for grape production. To accomplish
this, we located two structures – one above a flood plain - called the Flood Plain House, the other perched on a narrow basalt cliff overlooking a spawning pool on the Potlatch
River –called the Fishing House. Owner and guest quarters are housed in the Flood Plain House structure where multiple uses (additional guest facilities, an small event space,storage, and studio) are housed in the Fishing House.
The site challenges included: summer temperatures that can reach 110+degrees F, a
healthy population of rattlesnakes and bull snakes, periodic river flooding (the flood
plain site flooded twice during construction), and limited access for construction
equipment. Additionally, the clients requested close proximity to the river and
minimization of energy consumption and site disturbance. The building forms were derived from these circumstances.
Solution:
The Flood Plain House (living-guest quarters) is set approximately 12 feet above grade and minimizes ground disturbance by being supported on only four 8-inch thick
concrete piers. The floor elevation was determined by hydrologist water shed
analysis and is set above the 300-500 year flood event elevation. This ground
separation also discouraged snake infestations. A 15-foot deep steel Howe truss
system spans 80 feet at the center span with 32/16 foot balancing cantilevers at
each end. The longer cantilever extends over the river while the other continues to a
gangway that leads to the parking area. The steel bridge truss supports a wood
lattice that shades conditioned space below and reduces calculated cooling loads by
20%. The precise shape and location of the structure were made to weave into an
existing cottonwood grove.
The Fishing House (multi-use space) is roughly 1000 feet up river from the main
structure and is constructed with an inverted steel truss exoskeleton cantilevering
40 feet over the river. This was needed to meet the river setback requirements and
space for viewing a rare Steelhead spawning pool below.
Structure and Materials (one or two paragraphs):
Interiors of both structures are tough and utilitarian, clear finished local pine,
exposed framing lumber, with standard plywood sheathing. The lookout space uses
sealed OSB flooring. Exterior finishes are Galvalume metal siding, galvanized steel,
and oiled Garapa wood decking. Because both structures have essentially “scaffolding” as a part of their design, construction costs were kept to a minimum at $118 per square foot for the bridge structure and $147 per square
Project Size:
The Flood Plain House: 2310 square feet conditioned space
The Fishing House: 1139 square feet conditioned space
Project Name:
River Structures
Program:
At the end of an existing single lane unpaved road cut into a hillside near Juliaetta,
Idaho, the clients wanted to create a live work space for their winery and vineyard
preserving the most ideal exposure and soil for grape production. To accomplish
this, we located two structures – one above a flood plain - called the Flood Plain House, the other perched on a narrow basalt cliff overlooking a spawning pool on the Potlatch
River –called the Fishing House. Owner and guest quarters are housed in the Flood Plain House structure where multiple uses (additional guest facilities, an small event space,storage, and studio) are housed in the Fishing House.
The site challenges included: summer temperatures that can reach 110+degrees F, a
healthy population of rattlesnakes and bull snakes, periodic river flooding (the flood
plain site flooded twice during construction), and limited access for construction
equipment. Additionally, the clients requested close proximity to the river and
minimization of energy consumption and site disturbance. The building forms were derived from these circumstances.
Solution:
The Flood Plain House (living-guest quarters) is set approximately 12 feet above grade and minimizes ground disturbance by being supported on only four 8-inch thick
concrete piers. The floor elevation was determined by hydrologist water shed
analysis and is set above the 300-500 year flood event elevation. This ground
separation also discouraged snake infestations. A 15-foot deep steel Howe truss
system spans 80 feet at the center span with 32/16 foot balancing cantilevers at
each end. The longer cantilever extends over the river while the other continues to a
gangway that leads to the parking area. The steel bridge truss supports a wood
lattice that shades conditioned space below and reduces calculated cooling loads by
20%. The precise shape and location of the structure were made to weave into an
existing cottonwood grove.
The Fishing House (multi-use space) is roughly 1000 feet up river from the main
structure and is constructed with an inverted steel truss exoskeleton cantilevering
40 feet over the river. This was needed to meet the river setback requirements and
space for viewing a rare Steelhead spawning pool below.
Structure and Materials (one or two paragraphs):
Interiors of both structures are tough and utilitarian, clear finished local pine,
exposed framing lumber, with standard plywood sheathing. The lookout space uses
sealed OSB flooring. Exterior finishes are Galvalume metal siding, galvanized steel,
and oiled Garapa wood decking. Because both structures have essentially “scaffolding” as a part of their design, construction costs were kept to a minimum at $118 per square foot for the bridge structure and $147 per square
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