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levels to ensure a tight fit. Following excavation and construction of the foundation, a steel frame erected two stories high, to which timber components were anchored. The whole thing was sequenced. Upon truck arrival, Glulam beams and columns and CrossLam panels were lifted by a tower crane directly from the truck bed into position. Each component was labeled and designated for a specific location in the structure. As everything was prefabricated, very few workers were needed, which means less cost, improved safety, better coordination, and added accountability. Construction was quick, and less waste on-site was observed due to its prefabrication and modular installation. Each floor was assembled in five days. CLT is not cheap, but cost savings were made due to construction speed and reduced waste.
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352:(IBC), under Type III-A construction which limits wood buildings to six stories with height 85’ but designers planned for 8 stories, which led to extra time and cost in getting approvals as the City of Portland had never reviewed a tall CLT project before. In the end, City and state officials waived restrictive codes under the IBC section 104.11 for Alternate materials and method requests (AMMR). They were responsible for reviewing the
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framed for steel connections based on the CadWork 3D model. Before mass timber was fabricated, Kaiser+Path designed a mini-Carbon12 cross-section to ensure the look, constructability, and mobility. when the mock-up arrived at the site, it was installed and evaluated. Also, It identified the tolerance
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The spacious, 1,600 square-foot wood-filled residences feature floor-to-ceiling glass and light-filled open-floor plans, equipped with seismic alarm technology and spacious patios. There are no shared walls between units that provide a similar acoustic experience as living in a detached single-family
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As Carbon12 was permitted on the special provision, its performance is monitored by the
Colorado School of Mines. This engineering data was somewhat useful in making changes in the 2021 IBC code permitting up to 18 stories. The firm is now in the design and research phase for The Spar, which aspires
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and 12 Northeast
Fremont Street. It was designed, developed, and built by Ben Kaiser of PATH Architecture and Kaiser Group Inc., using CLT panels made by Structurlam. With a rooftop deck, the height is 95 ft. (29 m). Work on the Carbon12 started in July 2016, and it was completed in 2018. It is
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approach with the subcontractors for the
Mechanical, Electrical, Plumbing, and Fire systems (MEPF). So they were involved in the predesign phase itself, which helped them create a sequencing plan to install their systems without impeding other's work. As the floors were identical, improvements were
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with load capacities stronger than steel and fire resilience beyond those required to meet US building code standards. These improved qualities, alongside the historical construction of tall wood buildings in Europe, have led to an acceptance of wood in US construction, and new building codes are
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The building measures 85 feet (26 m) high for 8 floors, with two ground-floor retail spaces that activate the neighborhood beneath 14 condominium units (2 units per floor). Each unit has a recessed balcony and a dedicated elevator entrance. It has an underground
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In Feb 2019, Carbon12 was the recipient of the 2019 Wood Design Awards (Best multi-family wood design) awarded by the
Woodworks. In 2017, the building was featured in the Portland business journal and Daily journal of commerce as the year's transformational project.
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structural building material that sequesters carbon and acts as a natural insulator that dampens sound and holds in warmth. 132 tons of carbon were sequestered in the CLT, glulam columns and beams of Carbon12. Additionally, having exposed wood interiors provide
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The building was constructed by PATH + Kaiser group from
Portland, which also did work on the Radiator building, Oregon (Mass timber building). Munzing structural engineering, LLC provided the best solutions to integrate steel and wood systems in the building.
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Mass timber can be installed in any temperature and weather condition. Still, when it rained almost constantly for a few weeks, breathable SBS sheets were used, and fans circulated warm air to bring the moisture in the CLT down to the acceptable levels.
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The Carbon12 building ran in the USDA's Tall Wood
Buildings contest (2014) but did not win the prize. However, Kaieser+Path decided to build it anyway and owned the proposed building site, a competition requirement. This building was subject to the 2015
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building code did not account for tall timber buildings (8 stories), designers showed the building's safety aspects through computer simulations and modeling. Moreover, sensors were placed beneath the building to monitor the building performance.
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Residents of the Carbon12 have given interviews describing the building as "beautiful" and "bright". Few residents were happy with their savings on utilities, commuting expenses, and some residents have also applauded the building's commitment to
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system to meet the code demand of STC and IIC ratings of 60 and above the code minimum of 50 for residential use. So, Kaiser+Path hired multiple subcontractors to install the initial insulation and base layers, another to install the
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produced and
Utility bills. The exterior of the property features clad in vertically striated metal paneling, and a deep cut in façade, drawing light into the central interiors, like a shaft of sunlight penetrating a dense forest.
477:. CLT was made up of many layers of adhered lumber boards stacked at 90° angles for better structural rigidity in both directions. These large panels can be made up to 12 feet wide by 60 feet long. Glulam beams and columns were
339:), antiquated building codes in the United States discouraged wood frame construction in 5-floor buildings or higher for many years. With the advancement of science, construction technologies and innovation have led to
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Given the rising popularity of wood construction, Carbon12's title of the tallest wood building in the United States is already being challenged by a 148 feet (45 m), 11-floor wood-framing building in
Portland,
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Song, Jianwei; Chen, Chaoji; Zhu, Shuze; Zhu, Mingwei; Dai, Jiaqi; Ray, Upamanyu; Li, Yiju; Kuang, Yudi; Li, Yongfeng (2018-02-07). "Processing bulk natural wood into a high-performance structural material".
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system (VRF), an interconnected system that shares the load, making it efficient. The waste produced during the construction process was less due to the modular construction but still recycled and used as
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385:(glulam), and CLT (cross-laminated timber) in its structural system. Steel is used in the core and for connecting braces, and concrete for the basement, ground floor, and garage (automated garage).
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experiences, and timber's ability to char delivers natural fire protection. Furthermore, Carbon12 uses a
Buckling-restrained brace frame system to handle an earthquake or other natural disasters.
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932:"How a small, tenacious team opened the door for American builders to reduce their reliance on concrete and steel in favor of CLT"
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to become the tallest mass timber building globally, with 36 stories and almost 600,000 sq. ft. of office and commercial space.
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was present when the building reached its peak height. The Carbon12 is acclaimed as a booster for Oregon's timber industry.
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on the roof for the hot water system and exterior lighting reduces damage to the environment by decreasing the amount of
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and its street address (12 NE Fremont St.). The Carbon12 building is advertised to be one of the most efficient and
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843:. General Technical Report FPL–GTR–247. USDA, US Forest Services, Forest Products Laboratory (published May 2018).
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The building's design makes it environmentally friendly, using technologies such as floor-to-ceiling insulated
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While the use of timber frames for constructing 1-2 story buildings is typical in many countries (see:
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1101:"Who's moving into the nation's tallest timber building? Portlanders with lofty dreams (photos)"
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The primary structure is CLT, which was fabricated at the
Structurlam production facilities in
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1130:"Building with wood is a beautiful, sustainable, and impactful way to combat climate change"
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Zelinka, Samuel; Hasburgh, Laura; Bourne, Keith; Tucholski, David; Ouellette, Jason (2018).
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neighborhood, in the United States. The eight-story structure built with Oregon-made
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1485:"Mass timber: The next great disruption of construction, wood products industries"
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topping slab, and finally, one more to install the finished floor products.
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and safety aspects through a performance-based analysis. Oregon Governor
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662:"The Big Reveal_ How One Firm Built the Tallest CLT Structure in the US"
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Carbon12 is constructed with sustainably harvested and certified CLT, a
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993:"Getting to Yes: Making Effective Use of the Alternate Means Process"
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and maximize natural daylight. An efficient lighting system using
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806:"What the Fire Service Needs to Know about Tall Wood Buildings"
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needed for the building's domestic, which lowers the amount of
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Oregon pushes for wooden skyscrapers to revive timber industry
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1254:"The country's tallest timber building wraps up in Portland"
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Compartment Fire Testing of a Two-Story Mass Timber Building
1160:"Carbon12 Structural design and environmental features and"
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Teibinger, Dr.Martin; Matzinger, Irmgard (February 2013).
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with remote control systems and sensors for common areas.
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Popovski, Marjan; Karacabeyli, Erol (11 December 2020).
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1191:"Seismic behavior of cross-laminated timber structures"
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Buildings and structures in Northeast Portland, Oregon
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1427:. Woodworks. Wood product council. 28 February 2019.
1349:"Steel tolerances in section 7.13 of the ASIC 303-16"
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Wooden buildings and structures in the United States
1422:"WoodWorks Announces 2019 Wood Design Award Winners"
1313:"Concrete tolerances in section 4 of the ACI 117-10"
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Buildings and structures in Eliot, Portland, Oregon
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899:"Carbon12 Tall wood prize competition application"
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247:Tallest wood building in the United States
1223:"Carbon 12 Creates a New Class of Condos"
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569:the largest wooden structure, made from
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1434:from the original on 30 September 2020
1252:Hilburg, Jonathan (19 December 2017).
664:. Kaiser group and Path architecture.
1694:Vancouver Avenue First Baptist Church
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879:from the original on 3 September 2020
186:42,000 sq ft (3,900 m)
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1664:Lewis and Elizabeth Van Vleet House
1619:Dean's Beauty Salon and Barber Shop
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344:being proposed to adjust for this.
306:building situated on the corner of
223:Munzing Structural Engineering, LLC
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1689:Smithson and McKay Brothers Blocks
1654:Jensen Investment Company Building
631:"Carbon12 Building for the future"
302:Carbon12 is an 85 ft. (26 m)
23:Mixed-use in Oregon, United States
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1674:Portland Van and Storage Building
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311:named after the atomic weight of
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1788:Women Making History in Portland
1483:Devlin, Sherry (18 March 2019).
962:"Codes-standards/building codes"
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581:List of tallest wooden buildings
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1894:2018 establishments in Oregon
1659:Legacy Emanuel Medical Center
1624:Elmer and Linnie Miller House
1256:. The Architect's Newspaper.
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448:Carbon12 uses an electric LG
327:wooden buildings in the U.S.
1629:Frederick Armbruster Cottage
1071:"New heights in mass timber"
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1609:Charles E. Johnson Building
1320:American concrete institute
1032:RDH making buildings better
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501:Carbon12 was built using a
350:International Building Code
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1805:Albina/Mississippi station
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1634:Frederick Torgler Building
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341:engineered wood products
325:environmentally friendly
287:is a wooden building in
1755:Widmer Brothers Brewery
1585:Eliot, Portland, Oregon
199:Design and construction
1283:"Construction Process"
571:glued laminated timber
518:Recognition and legacy
401:Environmental features
383:glued laminated timber
297:cross-laminated timber
177:Cross laminated timber
128:45.54814°N 122.66645°W
1825:North Williams Avenue
1599:Billy Webb Elks Lodge
1028:"Carbon12 case study"
966:American wood council
354:building's structural
308:North Williams Avenue
16:For the isotope, see
1684:Simon Abraham Duplex
1544:Project presentation
576:Framework (building)
144:Construction started
133:45.54814; -122.66645
765:10.1038/nature25476
545:Architecture portal
220:Structural engineer
163:85 feet (26 m)
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75:Architectural style
50:General information
1715:Bernstein's Bagels
1393:HFA Schriftenreihe
730:2017-09-01 at the
610:2017-09-01 at the
421:windows to reduce
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1164:Building Carbon12
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936:Building Carbon12
759:(7691): 224–228.
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509:Because the 2015
315:(12 AMU), as the
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252:Other information
207:PATH Architecture
204:Architecture firm
168:Technical details
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1750:Tamale Boy
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358:Kate Brown
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