brazilian standard
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2021 ◽  
Vol 32 (87) ◽  
pp. 390-397
Author(s):  
Raquel Wille Sarquis ◽  
Ariovaldo dos Santos

ABSTRACT The aim of this paper was to analyze the accounting treatment used by companies in Brazil that have investments in joint operations, in light of the Brazilian and international accounting standards. There are no doubts about the accounting treatment to be used in consolidated statements, but a divergence was identified between the international and Brazilian standards in relation to individual statements. IFRS 11 determines that investors recognize the values of a joint operation proportionally in consolidated and separate statements. However, the Brazilian standard includes a paragraph determining that only joint operations with no legal personality can be measured in individual statements proportionally. CPC 19 foresees different accounting treatments depending on the legal form of the joint operation, omitting the accounting treatment to be used in joint operations with a separate vehicle. The topic of joint operations is relevant, as the accounting treatment used in Brazil can mean our accounting practices do not comply with the international ones. Besides contributing to the literature on joint businesses, this essay indicates to regulatory bodies the need to modify the Brazilian standard so that it fits the international ones. As well as discussing the current standard, an analysis was carried out of companies in Brazil that have joint operations and the respective accounting treatments used to infer how well they fit the international standards. The results indicate that the accounting statements of the companies in Brazil with joint operations, composed through a separate vehicle, do not comply with the international standards. The main contribution of this essay is that it draws the attention of companies, auditors, and regulators to this non-compliance.


2021 ◽  
Vol 15 (1) ◽  
pp. 141-151
Author(s):  
Diniane Baruffi ◽  
Marcelo Fabiano Costella ◽  
Zacarias Martin Chamberlain Pravia

Background: Guardrails are structures that protect workers from falling from heights at construction sites. Objective: The objective is to evaluate experimental models by applying static and impact loads to wood and steel guardrails. Methods: Brazilian and international standards were consulted to define the actions applied to guardrails, which were tested experimentally in three models of each material in a full-size prototype. Results: The experimental results indicate that the models studied could support the applied loads, and no local or global system rupture occurred. However, the displacements for the static load of 1500 N/m required by Brazilian RTP 01 for both models did not comply with Brazilian standard NBR 14718 because they had displacements above 20 mm, despite meeting other international standards for static testing and impact testing. Conclusion: From the results obtained in the experimental tests, it was possible to verify that the structures withstood the applied loads and could be used safely in civil construction works. However, the load requirements of RTP 01 are excessive, and NBR 14718 is not suitable for checking temporary guardrail structures. This demonstrates the need for the Brazilian standard to be revised to guide the dimensioning and verification of structures in order to adapt to international standards.


Wood Research ◽  
2021 ◽  
Vol 66 (5) ◽  
pp. 711-720
Author(s):  
FRANCISCO ANTONIO ROCCO LAHR ◽  
EDUARDO CHAHUD ◽  
FELIPE NASCIMENTO ARROYO ◽  
ANDRÉ LUIS CHRISTOFORO ◽  
EDSON FERNANDO CASTANHEIRA RODRIGUES ◽  
...  

The Brazilian standard ABNT NBR 7190 (1997) governs the premises for the wood structure sizing through a table and the simplified method. Thus, this research aims to analyze whether the simplified method shown in the standard matches the resistance values of 72Brazilian species, separated from class C20 to C60. In the end, it was possible to conclude that the value displayed by the standard between theratio of shear and compressionin thedirection parallel to the fibers is half of what actually happens in Brazilian species, showing anurgent review in the standard premises.


Wood Research ◽  
2021 ◽  
Vol 66 (4) ◽  
pp. 582-594
Author(s):  
FRANCISCO ANTONIO ROCCO LAHR ◽  
VINICIUS BORGES DE MOURA AQUINO ◽  
FELIPE NASCIMENTO ARROYO ◽  
HERISSON FERREIRA DOS SANTOS ◽  
SERGIO AUGUSTO MELLO SILVA ◽  
...  

The Brazilian standard ABNT 7190 (1997) establishes the strength classes C20, C30, C40 and C60 for the proper framework of the different wood types in the group of hardwoods. Associated with the strength class, which is based on the compressive strength characteristic value parallel to the fibers (fc0,k), the standard stipulates the respective values representing the stiffness (Ec0), with 19500 MPa being the reference value for the class C40, essential variables in structural design. For being the C40 class is the one with the greatest amplitude (20 MPa), it is possible that the value 19500 MPa is not the best representation of stiffness. This work aimed to verify the representativeness the stiffness value established by the Brazilian standard for C40 wood. The result obtained from the average confidence interval indicates the value of 14110 MPa as being the most representative, which may imply structures that are supposedly more rigid than they really are.


BioResources ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. 6758-6765
Author(s):  
Larissa Soriani Zanini Ribeiro Soares ◽  
Iuri Fazolin Fraga ◽  
Lucimar de Souza e Paula ◽  
Felipe Nascimento Arroyo ◽  
Heloiza Candeia Ruthes ◽  
...  

This study aimed to investigate the influence of moisture content variation on 12 mechanical properties of the Cedrelinga catenaeformis species. Of the 12 properties, four were significantly affected (based on analysis of variance at 5% significance level), and the compression and shear strengths in the direction parallel to the fibers exhibited the greatest difference in values from the saturated moisture condition of up to 12% (approximately 34% increase). Toughness exhibited a behavior different from that predicted by the normative equation, in which increase in moisture content implied increase (approximately 59%) of the property studied. Because a good part of the properties was not significantly affected and Brazilian standard ABNT NBR 7190 (1997) considers expressions that lead to a considerable increase in mechanical properties with the reduction of moisture content, this approach was unfavorable to the safety of the project, motivating the development of other studies to collaborate in revisions of this normative document.


2021 ◽  
Vol 263 (1) ◽  
pp. 5353-5359
Author(s):  
Marcos Holtz ◽  
Davi Akkerman ◽  
Carolina Monteiro

In 2019, the Brazilian Standard NBR 15575: 2013 start a periodical revision process. This standard presents performance criteria for dwellings, such as acoustic, thermal, lighting, durability, etc. During this first enforcement period, some requirements result in divergent interpretations, e.g. difficulties to define the noise class, proposed as a subjective criteria. Technical groups were created to analyze the current text and propose modifications to solve these issues. This article presents an overview of the mains issues related to the acoustic requirements found in the standard. A summary of the proposals is presented, which went through a national ballot.


Wood Research ◽  
2021 ◽  
Vol 66 (2) ◽  
pp. 267-276
Author(s):  
Vinicius Borges De Moura Aquino ◽  
Marcus Vinicius Pereira De Freitas ◽  
Claudia Queiroz De Vasconcelos ◽  
João Paulo Boff Almeida ◽  
Felipe Nascimento Arroyo ◽  
...  

This research aimed to characterize the wood species Goiabão (Planchonella pachycarpa), following the precepts set forth in the Brazilian standard ABNT NBR 7190, as well as to evaluate the possibility of estimating physical and mechanical properties, using the analysis of variance (ANOVA) as a function of apparent density, and also to estimate the stiffness properties as a function of the respective strength property. The physical and mechanical properties were considered adequate for the use of this wood for structural purposes, being classified in class C40. According to the results of the regression models, it is possible to estimate the tensile strength parallel to the fibers as a function of the apparent density. It was also possible to estimate the longitudinal elastic modulus in the compression parallel to the fibers as a function of the compressive strength parallel to the fibers.


Author(s):  
Daniel Victor da Cunha Teles ◽  
Rafael Nunes da Cunha ◽  
David Leonardo Nascimento de Figuei Amorim ◽  
Ricardo Picón ◽  
Julio Flórez López

2021 ◽  
Vol 7 (4) ◽  
pp. 1197-1202
Author(s):  
Marta Cristina de Jesus Albuquerque Nogueira ◽  
Juliano Souza Vasconcelos ◽  
Victor Almeida De Araujo ◽  
André Luis Christoforo ◽  
Francisco Antonio Rocco Lahr

Eucalypt varieties have been identified as multipurpose materials. With origins in those nations of Oceania, this genus has been applied for purposes such as pulp and paper, bioenergy, civil construction, and furniture. Very suitable as firewood and charcoal, Eucalyptus microcorys would have good potentialities as structural solutions for construction. But, this wood species is not easily found as building parts in the Brazilian market. This paper aimed to develop a broad evaluation of this species to highlight their features for the utilization as structural lumber. Based on the Brazilian standard document on wooden structures, sixteen properties were evaluated to emphasize such potentialities. Using two moisture contents, these conditions were adopted to identify each wood property at green and dried points. About 966 repeats were realized in these tests. Nine properties showed influences with the moisture reduction as well as perceptible increases in their resistances: static bending, parallel and perpendicular compressions, and parallel tensile in the modulus of rupture; perpendicular compression and parallel tensile in the modulus of elasticity; and, shear stress and hardness properties in parallel and perpendicular directions. Eucalyptus microcorys wood reached good resistance properties, justifying its potentiality for construction in structural uses.


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