by Web Editor | Aug 24, 2018 | News
First Mass Plywood Panel Gets APA Certification
Freres Lumber Company says it has achieved Mass Plywood Panels (MPP) certification under the
APA – The Engineered Wood Association’s ANSI/APA PRG 320 standard.
The product is the first Mass Timber Panel constructed entirely out of Structural Composite Lumber (SCL) worldwide, making it much more cost effective than CLT (cross-laminated timber) options, according to a Freres news release. Mass Timber Panels will allow rapid construction of multi-story structures with pre-fabricated structural wood panels, the release says.
The predictable char rate of mass timber panels allows buildings to be built taller with wood, allowing multi-story structures out of wood up to 18 stories anticipated in the next iteration of the International Building Code (IBC). Wood structures carry a smaller carbon footprint, provide greater sustainability, faster construction with less waste and are an economically favorable construction method compared to concrete and steel, Freres says.
The company says it is continuing to refine the design values of the product line, and will roll out additional MPP product configurations.
From Building Design + Construction: bdcnetwork.com
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by Web Editor | Jun 13, 2017 | News
Timber construction is opening a new market that has been keeping lumber and milling machinery busy at a growing number of wood products companies, including Montreal’s Nordic Structures, Sauter Timber in Rockwood, Tennessee, SmartLam, in Columbia Falls, Montana, and D.R. Johnson, in Portland, Oregon.
Oregon-based D.R. Johnson Wood Innovations, a subsidiary of D.R. Johnson, specializes in the manufacture of cross-laminated timber, or CLT, and glue-laminated beams from Douglas fir and Alaskan yellow cedar. D.R. Johnson Wood was the first U.S. company to receive APA/ANSI certification to manufacture structural CLT panels – and CEO Valerie Johnson plans to help grow the U.S. market.
D.R. Johnson has received the first U.S. certification to manufacture cross-laminated timbers (CLT) under a new standard approved last year by the American National Standards Institute. D.R. Johnson is one of only three North American companies certified by the Engineered Wood Association to construct CLT for use in buildings.
Johnson’s company employs 125 at a traditional sawmill and laminating plant, which was recently expanded by 13,000 square feet for increased CLT production. They’re currently fielding calls from hopeful builders, and manufacturing samples to be tested for fire safety and structural quality. One recent new wood construction project is a 14-story wooden apartment tower being built in Portland, Oregon.
From Woodworking Network: https://www.woodworkingnetwork.com/wood/pricing-supply/timber-construction-has-lumber-milling-machinery-rolling
by Web Editor | Dec 19, 2016 | News
Videos are now available showing a series of live blast tests on three cross-laminated timber (CLT) structures at Tyndall Air Force Base, conducted by WoodWorks in cooperation with the US Forest Service and Softwood Lumber Board. Post-test observations were exciting. All structures remained intact and matched modeling predictions with acceptable levels of damage under significant explosive loading. The results of this testing will be used to further expand the use of wood solutions for Department of Defense applications and other blast-resistant construction. Watch the videos here: https://bit.ly/2hwVE1g
The CLT structures—each two-story, single-bay structure with anchorage to an existing concrete slab—were constructed in full by Lendlease over a period of eight days. Each structure was constructed using a different grade of CLT (i.e., grade designations V1, E1 and V4 per ANSI/APA PRG-320 provided by DR Johnson, Nordic and SmartLam, respectively) and included window and door openings (with doors provided by American Direct) consistent with an actual building. Self-drilling screws provided by MyTiCon and adhesive anchors provided by Hilti were utilized in concert with angle steel to connect the constituent panels of each structure.
Three shots were performed to demonstrate the effectiveness of CLT over a spectrum of blast loads. The first two shots were designed to stress the CLT structures to within their respective elastic limits. The third shot was designed to push the structures beyond their elastic limits such that post-peak response could be observed. Reflected pressure and peak deflections were recorded and will be used to thoroughly document the response of the structure in time, and support a design methodology for predicting elastic response of CLT under dynamic loads.
Initial observations deriving from these tests are positive. For the first two tests, peak recorded deflections were consistent with pre-test predictions, indicating the efficacy of the design assumptions and supporting design methodologies. Results from the third test indicated a controlled response in which localized panel rupture was observed but connection integrity and load carrying ability were not compromised for any of the three structures. Over the next couple months, WoodWorks will be working with Karagozian & Case, Inc. and the University of Maine to thoroughly post-process and analyze the results of these tests.
From Business Wire: https://www.businesswire.com/news/home/20161215005337/en/WoodWorks-Leads-Blast-Testing-Project-Cross-Laminated-Timber
by Web Editor | Oct 7, 2016 | News
If the vast potential of timber construction isn’t obvious, a new exhibit at Washington D.C.’s National Building Museum aims to clear things up. Running through May 2017, the USDA-sponsored Timber City is drawing attention to the recent boom in a worldwide movement toward timber construction.
It’s opening up a new market that has been turning the mills at a growing number of wood products companies, including Montreal’s Nordic Structures, Sauter Timber in Rockwood, Tennessee, and D.R. Johnson.
Oregon-based D.R. Johnson Wood Innovations, a subsidiary of D.R. Johnson, specializes in the manufacture of cross-laminated timber (CLT) and glue-laminated beams from Douglas fir and Alaskan yellow cedar. They’re the first U.S. company to receive APA/ANSI certification to manufacture structural CLT panels – and they hope to help grow the U.S. market.
D.R. Johnson is one of only three North American companies certified by the Engineered Wood Association to construct CLT for use in buildings. The company employs 125 at a traditional sawmill and laminating plant, which was recently expanded by 13,000 square feet for increased CLT production. They’re currently fielding calls from hopeful builders, and manufacturing samples to be tested for fire safety and structural quality.
D.R. Johnson says the system for constructing CLT involves assembling prefabricated parts, speeding construction, and paring labor costs. The company partnered with wood processor manufacturer USNR to build a custom panel press for CLT.
From Woodworking Network: https://www.woodworkingnetwork.com/events-contests/event-coverage/timber-construction-exhibition-shines-light-industry
by Web Editor | Mar 27, 2015 | News
From: Panel World Staff
In response to the CBS 60 Minutes news story on formaldehyde emissions that aired March 1, Composite Panel Association developed a new information resource that provides the North American marketplace assurance that CPA-certified composite panels, and products made with those panels, do indeed comply with the California Air Resources Board (CARB) regulation.
To help protect U.S. consumers and eliminate confusion in the North American marketplace, CPA is working with the Federal Wood Industries Coalition (FWIC) to encourage the U.S. EPA to finalize their national regulation on emissions from composite panels that is now almost three years past the statutory deadline. It is important that EPA finalizes its regulation so that finished goods made with composite panels, made domestically or internationally, are regulated nationwide, CPA states.
In addition, CPA continues to work closely with CARB to ensure harmonization between California regulation, currently being amended, and EPA’s new regulation. CPA’s newest resource titled, “A Message from CPA About Formaldehyde Emissions,” is intended to provide customers, distributors, retailers and end-users of CPA-certified panels the confidence that panels labeled as compliant meet or exceed the CARB regulation.
The paper states that CPA has served as a TPC (third party certifier) and is accredited by the American National Standards Institute (ANSI) and by ANSI-ASQ National Accreditation Board (ANAB) (formerly ACLASS) as a certification and inspection body. It also operates a state-of-the-art testing facility also accredited by ANAB, with yearly assessments.
Read more on this story in the May 2015 issue of Panel World…
