Mass Timber Construction Journal <p>The Mass Timber Construction Journal is a peer-reviewed international online journal, dedicated to high quality research in Mass Timber Construction (MTC). The journal was created to fill an identified gap in the research publishing market. The editors found it difficult to publish MTC research in other journal publications due to a lack of concentrated peer-reviewers, editorial staff and researchers who are the leaders in the MTC field.</p> Mass Timber Construction Journal en-US Mass Timber Construction Journal 2209-2579 <p>The Author (on behalf of any and all co-authors) hereby assigns to MTCJ (hereafter known as the Publisher) the copyright to the Contribution named above; whereby the Publisher shall have the exclusive international rights to publish in any and all media the said Contribution and translations of it wholly or in part throughout the World under the provisions of this agreement. These rights include without limitation mechanical, electronic and visual reproduction; electronic storage and retrieval; and all other forms of electronic publication or any other types of publication including all subsidiary rights.</p> <p>&nbsp;</p> Potential of Hardwood Lumber in Cross Laminated Timber in North America:A CLT Manufacturer's Perspective <p class="p1">&nbsp;</p> <p class="p2"><em>The objectives of this research are to study the current manufacturing practices for Cross Laminated Timber (CLT) in North America and record manufacturers’ perspectives to identify the opportunities and challenges of using hardwood lumber in their existing set-up. Face-to-face interviews and industry visits were used to collect data on current production practices and manufacturers’ opinions regarding the potential use of hardwood lumber in CLT manufacturing. To date, only two United States-based CLT manufacturers have used hardwood lumber in specific projects. The only issues with using hardwoods for the two manufacturers, compared to softwood operations, were quick dulling of cutting tools because of higher hardwood density and a longer pressing time. Other factors, such as moisture content, various dimensions of the lumber, and the caustic nature of some species, were highlighted as limitations for the use of hardwood lumber in CLT panels. The primary concern of the manufacturers was the availability of hardwood lumber in the required quality and quantity. While there is abundance of non-dimensional grade hardwood lumber available, none of this hardwood lumber can be used in its current state, as it does not meet the minimum requirements for CLT manufacturing, or those that meet the specifications are of higher grade and are not cost-competitive. Using non-dimensional grade hardwood lumber requires additional value-added and material removal work, and such work would significantly reduce productivity and increase costs. All CLT manufacturers agreed that the first step to the successful implementation of hardwood or hardwood-softwood hybrid CLT would require the production of dimensional grade hardwood lumber by hardwood sawmills. </em></p> Sailesh Adhikari Henry Quesada Brian Bond Tom Hammett ##submission.copyrightStatement## 2020-08-09 2020-08-09 3 1 1 9