Nail laminated timber: A sustainable and low - cost alternative for construction

Carlla Camilly Verneque Cordeiro de Moura  Jorge; Alexandre  Jorge Duarte da  Silva; Julio Cesar  Molina

doi:10.4025/actascitechnol.v48i1.75135

Authors

Carlla Camilly Verneque Cordeiro de Moura Jorge Universidade Estadual Paulista “Julio Mesquita Filho” https://orcid.org/0009-0002-5927-5028
Alexandre Jorge Duarte da Silva Universidade Estadual Paulista “Julio Mesquita Filho” https://orcid.org/0000-0002-6133-0412
Julio Cesar Molina Universidade de São Paulo https://orcid.org/0000-0002-6204-0206

DOI:

https://doi.org/10.4025/actascitechnol.v48i1.75135

Keywords:

Mechanical properties; sustainable construction; numerical simulation; wood performance.

Abstract

Nail Laminated Timber (NLT) stands out in the construction industry due to its structural characteristics, environmental benefits, and ease of fabrication. It is an engineered wood panel composed of lamellae arranged side by side and joined using nails, which can be either metallic or wooden, without the use of adhesives. This panel can be manufactured using any wood species. The use of NLT, already well - established in North America, offers a sustainable alternative, as the utilization of timber from plantation forests reduces environmental impact compared to traditional construction materials. However, its broader application in Brazil requires specific standardization and national studies to evaluate its mechanical properties. This study presents a literature review on the subject, along with the results of experimental tests, including direct shear tests conducted on specimens and bending tests performed on beams and NLT panels. Numerical simulations are also included, highlighting and analyzing the areas subjected to the highest stress demands. Results indicated that NLT shows great potential for use in construction, offering good strength and stiffness properties. However, visual grading of the lamellae is essential, as the natural defects in the wood can compromise the structural integrity of the element under bending.

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