Accoya Bridge Case Studies

Material & Finish (first bridge)

Approximately 1,200 m3 strength graded Accoya wood. Finger-Jointing and laminating to the required construction dimensions. Factory applied coating: Remmers GN Primer plus 2 layers Remmers HK Lazur (Pine shade). Onsite coating (April 2009): 1 layer Remmers HK Lazur (Pine shade)

HEAVY TRAFFIC ROAD BRIDGES IN THE NETHERLANDS: Two Wooden Bridges for Heavy Road Traffic up to 65 Tonnes in Sneek

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“Searching a bridge made of wood with a service life of around 80 years seemed an impossible task until we discovered Accoya”S. Hoitinga & P. de Jong, Friesland local authority

Comments

“A bridge made of wood with a service life of around 80 years — this was our key challenge in the search for the right type of timber. The wood had to exhibit a sufficient load bearing capacity and have minimal swelling and shrinkage. It seemed an impossible task until we discovered Accoya, which has all the properties that we needed. We now have a bridge that everyone is wildly enthusiastic about and which even won the 2008 Public Prize for the most striking construction in Sneek. We are all delighted.” Clients, S. Hoitinga & P. de Jong from Friesland local authority.

Contractor Schaffitzel Holzindustrie GmbH, Schwäbisch Hall

Engineering H.E. Lüning Adviesbureau voor technische houtconstructies Oranjewoud Mobiliteit & Infrastruc-tuur GLC Houtconstructies

Project Location Across A7 near the city districts of Akkerwinde and Molenkrite

Architects Achterbosch Architectuur – Hans Achterbosch Onix – Alex van de Beld, Haiko Meijer

Principal Province of Friesland

Date First bridge - 2008; second bridge to be completed - 2010

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UK & Ireland inquiriesT: +44 1753 757500

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www.accoya.com

LIFTING BRIDGE IN THE NETHERLANDS: Renovation of a Bicycle and Pedestrian Bridge across a Canal in Nijetrijne

Material & Finish

The 250 x 250 mm portal arch, 150 x 200 mm shores and the guardrails are made from Accoya wood. Arch and shores are finger jointed and laminated Accoya wood sections. The deck is made from Azobé and steel. The Accoya wood is finished with a white opaque coating.

Comments

“The aim was to have this traditionally designed bridge made from sustainable wood with class 1 durability, and painted in white for a classical look. Accoya wood appeared to be very suitable for the superstructure and could be delivered in time. In addition to the fact that the wood can be coated very easily, we expect the coating to last longer on Accoya than on tropical hardwoods”, Mrs. Claudia de Glee-Visser, Wetterskip Fryslân.

Architect Wetterskip Fryslân

Principal Municipality Weststellingwerf

Contractor De Boer en De Groot BV

Structural Engineering & Supplier GLC Houtconstructies, Duiven

Date March 2008

“In addition to the fact that the wood can be coated very easily, we expect the coating to last longer on Accoya than on tropical hardwoods” Evert Laarman, GLC Houtconstructies







www.accoya.com

SHADING AND EXPANSION JOINTS IN THE USA: The Renovation of a 1960’s Private Residence in Sedona, Arizona

Material & Finish

Roof: approximately 2,000 linear feet of rough sawn Accoya wood finished with Sikkens Rubbol Siding Finish. Hybrid alkyd acrylic SIK56140-05, low sheen solid stain for vertical surfaces.

Expansion joints: approximately 1,400 lf of rough sawn Accoya left uncoated.

Comments

Concrete patios, driveways and sidewalks are frequently installed with wooden expansion joints. These joints absorb the heat-induced expansion and contraction of the concrete and prevent cracking. Over time, however, the wood in the expansion joints will decay and missing material will make the joints unsightly and, potentially, a trip hazard. Accoya wood was chosen for the expansion joints in the patio areas in this project because it would last longer and remain stable in this dry desert climate. This is the first time Accoya wood has been used in this application.

Stability and durability were also key reasons why Accoya wood was chosen for the shading.

Principal David Vickery Construction Inc

Project Location Wickiup Drive, Sedona, AZ, USA

Date March 2009







www.accoya.com

VELODROME TRACK IN GEORGIA: Track Surface Made from Accoya Wood for a New Velodrome

Material & Finish

Approximately 80 m Accoya wood 50 x 125 mm machined to 45 x 35 mm pieces. The total length of these pieces is 39,000 m.

Architect Sander Douma Architecten BNA, Stompetoren

Principal Local Georgian investors

Date Installed during spring/summer 2009







www.accoya.com

WOODEN SUPPORTING WALL IN THE NETHERLANDS: Supporting Wall of a Public Swimming Pool Building at Stappengoor

Material & Finish

Finger jointed and glue laminated Accoya wood lengths measuring 270 x 1300 mm and 270 x 1700 mm, finished with 2 layers of Restol Wood Stain brown.

Architect Architectenwerkgroep, Tilburg

Principal City council of Tilburg

Contractor Bertens Bouw, Tilburg

Delivery GLC-Houtconstructies, Duiven

Project Location Stappengoorseweg, Tilburg

Date January 2009

Comments

The architect wished to construct a thick wooden wall at the front of the building such that the wood could be seen from both inside and outside. The wall was also to be designed to support the weight of the roof and offer thermal insulation. Accoya wood made this possible because of its dimensional stability and durability in high moisture environments, as well as its thermal insulation properties.

The scenario:

In the upscale area of Biltmore, Arizona, the new concept Hillstone Restaurant by the Hillstone Restaurant Group was designed to intentionally blend the indoor and outdoor experience. The design is purposely casual yet high-end with moveable glass walls that open views from the restaurant through to the natural southwestern surroundings. A mix of natural materials was carried through from the interior to the exterior including stone, copper and wood.

The solution:

Transitioning between the indoors and the outdoors was done through the meticulous selection of design and materials. Particular emphasis was placed on using sustainable materials and obtaining LEED certification. The design combined unique interior elements, such as moveable walls and energy-efficient window systems, with natural exterior materials such as Accoya wood.

LIGHTING POLES IN THE USA: Accoya Wood Blends Nature with Style at Biltmore Restaurant

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For the exterior lighting, the design team selected Structura’s Bol Series featuring Accoya wood with Cumaru exterior stain and finish. The glulam Bol poles are round at the base and slowly taper to a square top profile, emulating design features within the restaurant. Each pole’s interior aperture conceals powerlines and camera cabling for exterior lighting and security monitoring, resulting in a clean appearance. The Structura poles utilize Accoya wood selected for its natural beauty, sustainability and durability. From certified sources, including FSC forests, Accoya wood offers exceptional dimensional stability and resistance to UV degradation in the harsh desert environment.

“Accoya wood’s unique modification process will offer worry-free protection and preservation of these sleek lighting poles for years to come,” said Dan Kohnen, president of Structura. “We count on Accoya wood to provide long-lasting protection, stability and distinctive aesthetic appeal for our customers. It has always performed flawlessly, and our customers appreciate that reliability,” Kohnen added.

“We count on Accoya wood to provide long -lasting protection, stability and distinctive aesthetic appeal.”Dan Kohnen, president of Structura

The result:

The use of Accoya wood in this often overlooked application offered the design team a thorough natural look and feel throughout the restaurant setting. Accoya wood is a durable, long-lasting and aesthetically pleasing material that blended the interior elegance with the exterior southwest environment. “Not once have I seen lighting poles this elegant,” said the senior project architect.


www.accoya.com






Manufacturer Structura

Distributor Universal Forest Products

Location Biltmore, Phoenix, Arizona

Date December 2010

“Not once have I seen lighting poles this elegant.”Senior project architect

LIGHTNING POLES IN THE USA: Accoya Combines Long-Lasting Beauty with All-Natural Heritage

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The scenario:

When the native Red Cliff Band of Lake Superior Chippewas first settled on the banks of Lake Superior, they had to endure the extreme climate, particularly in the winter. So when the town needed to invest in new lighting poles along the main highway and roads, durability to handle the elements was just as important as proper aesthetics of the Chippewa reservation.

The solution:

With a new casino in development as the main town structure, the lighting poles needed to blend well with the Northwoods Native American architectural style as well as stand up to the extreme weather conditions found in northern Wisconsin. After considering numerous tropical woods, the designer, SAS + Associates from nearby Duluth, Minnesota, specified Structura’s Sine series of poles featuring Accoya® wood in a pre-weathered grey finish.

“The benefit of using a wood like Accoya is its ability to withstand the demanding roadway conditions and extreme temperatures, along with its ability to naturally weather without structural detriment”Dan Kohnen, president of Structura

The scarf-jointed, square-tapered glulam poles provided the visual architectural consistency to accent the all-natural Northwoods styling, and offered the added durability requirements needed for the exposed weather conditions. “The lighting poles needed to blend with the natural architecture and surrounding, yet be durable and easy-to-maintain,” said Luke Sydow, owner of SAS + Associates. “We decided to go with the weathered gray finish so the patina matched the surrounding buildings. This was my first time specifying Structura poles and I am extremely happy with the outcome.”

The Structura light poles, made from Accoya wood, offer a durable and all-natural material with minimal need for maintenance. Structura uses Accoya wood due to its strength, durability and aesthetic impact. Accoya wood is able to endure harsh weather conditions, holds up against rot and decay, and is readily available.

The result:

Investing in a lighting pole system with consideration given to both the historical past and long-lasting future has paid off already. “The benefit of using a wood like Accoya is its ability to withstand the demanding roadway conditions and extreme temperatures, along with its ability to naturally weather without structural detriment,” said Dan Kohnen, president of Structura. “Not only will the Red Cliff Band’s appreciation of these high-quality and attractive Accoya wood poles provide benefit today, but far into the future.”


www.accoya.com






Architect SAS + Associates

Manufacturer Structura

Distributor Universal Forest Products

Location Red Cliff, Wisconsin

Date October 2010

Accoya Bridge Case Studies

Technology

Transcript of Accoya Bridge Case Studies