IN DEPTH Responsive innovation A s a st r uct u ra l product, eng i neered lumber products don’t change at quite as rapid a pace as other categories, such as faucets or flooring. Yet inno-vations continue to proliferate, partic-ularly as manufacturers seek to help builders meet evolving codes, improve quality, and make homes more energy efficient. For example, for the past few years, engineered lumber manufacturers have been creating solutions to meet new fire protection requirements for floor sys-tems over unfinished basements. Boise helped APA develop a series of prescriptive paths to meeting the new code requirements, which are outlined in APA’s System Report SR-405. These include applying gypsum to the bot-tom of the I-joist flange and installing mineral wool insulation. Several manufacturers offer prod-uct-specific solutions that also comply. Boise’s AJS 24 FMJ I-joist has insulation board on the web, providing a one-step fire solution for unfinished basements. “We’ve focused on ready-to-frame solutions,” says Reid Williams, EWP Engineered and Technical Support Manager for LP Building Products. “T here a re lots of ways to meet that need … but we really focus on how can we to get a product to the builder that meets the builder’s needs and makes their lives as easy and as cost effective as possible.” The company has two product op-tions that meet the code: Laminated strand lumber (LSL), which can be used in place of traditional I-joists with no modification, or LP FlameBlock I-joist, designed for builders who want an I-joist solution rather than a solid BELOW: LP FlameBlock I-joist combines the strength of LP SolidStart I-joist with a Pyrotite coating that slows the effects of heat and flames, making it suitable for meeting the Fire Protection of Floors requirements of the IRC. Its 2-1/2"-wide flanges provide for easier handling and more nailing and gluing surface area. RIGHT: One of APA – The Engineered Wood Association’s numerous resources is “IECC Compliance Options for Wood-Frame Wall Assemblies.” The guide, created in partnership with the ICC, offers methods for complying with eh R-20 and R-13+5 prescriptive requirements of the 2009, 2012, 2015, and 2018 International Energy Conservation Code. It can be downloaded for free at apawood.org. 56 LBM JOURNAL SEPTEMBER 2017 solution like the LSL. The LP Flame-Block I-joist takes the company’s Solid-Start I-joist and adds a thicker web and a Pyrotite coating that slows the effects of heat and flames. Weyerhaeuser has temporarily dis-continued its TJI Joists with Flak Jacket Protection, which have a coating that enhances fire resistance. The company announced it is working with custom-ers to address concerns about an odor in newly constructed homes with the product. The International Energy Conserva-tion Code is another area the industry is paying close attention to, as recent changes impact the design and con-struction of wood-framed walls. APA recently updated its guide, “IECC Compliance Options for Wood-Frame Wall Assemblies,” which it co-publishes with the International Code Council. The guide offers exam-ples of wood-frame wall assemblies that achieve R-20 and R-13+5 requirements. Marilyn Thompson, APA’s Market Communications Director, notes that builders will soon be able to use a per-formance path for compliance, rather than just prescriptive options, such as using advanced framing to create more cavity space for insulation and insulating ductwork. “We’re looking at different assemblies and provid-ing the design recommendations that help builders navigate the new options available in the code.” Along with products that address the changing market, manufactur-ers continue to improve and enhance their traditional product lines. Ros-boro has reintroduced its BigBeam DF 30F 2.1E glulam, a high-strength composite glulam. The beam’s orig-i n a l S ou t h e r n y e l lo w p i n e c o r e h a s been swapped with Douglas fir stock that the company is able to produce internally. The high-strength composite is de-signed for carrying heavier loads. It complements the company’s X-Beam architectural appearance glulam beam. Boise offers a glulam beam and a column made with Alaskan yellow cedar, a naturally decay-resistant spe-cies, offering an exterior beam alterna-❯ tive to treated products.