Wood Durability Based in the New Brazilian Timber Structures Code Abnt NBR 7190: 2022

Abstract

The ABNT NBR 7190:1997 standard has recently undergone a revision process. Thus, this paper treats of the Chapter 12 wood durability of the standard revision project Brazilian, Design of Timber Structures code ABNT NBR 7190: 2022. Wood is an organic material and it must receive a prior analysis of the conditions in which it will be applied to identify the need for specific preservative treatment, seeking to obtain durability and resistance to wood biodeterioration agents, such as fungi, xylophagous insects and marine bores. Similar to Chapter 12 Wood durability of the ABNT NBR 7190: 2022 standard revision project, ABNT NBR 16143: 2013 complements regarding the wood preservation treatment, where it also establishes the system with six Use Categories for wood, with an emphasis on treatment preservative to increase the durability of construction systems. A very important aspect that must be considered is the elaboration of a project in which the durability is assured. Thus the purpose of the Use Categories System is to offer a simplified tool for decision making regarding the rational and intelligent use of wood, through a systemic approach to the producer and user, which ensures greater durability of constructions.