scholarly journals Análise comparativa da geração de resíduos entre o light steel framing e a construção convencional

2021 ◽  
pp. 49-68
Author(s):  
Whadson Viana da Silva Souza ◽  
Edmilson Santos Júnior ◽  
Lívia Ramos Lima
Keyword(s):  
Steel Framing

Devido ao grande consumo de recursos naturais, elevado consumo de energia, poluição ambiental e geração de resíduos, a construção civil é classificada como uma atividade altamente desgastante para o meio ambiente. Tendo em vista que, no Brasil, são utilizadas técnicas tradicionais de construção que trazem consigo prejuízos financeiros e ambientais durante todo o processo de construção, o presente artigo, visa responder: seria possível encontrar uma via que vise reduzir os danos ambientais e que seja financeiramente viável? Neste contexto, abordaremos o light steel framing (LSF), que tem se apresentado como uma excelente alternativa nestes quesitos, servindo como contraponto direto aos sistemas convencionais amplamente utilizados. Portanto, esta pesquisa, feita a partir de estudos bibliográficos, tem como objetivo principal comparar a geração de resíduos da construção civil (RCC), o light steel framing e as construções convencionais. A partir da análise feita, os resultados mostram que construções utilizando o método LSF, geram quantidades significativamente menores de resíduos quando comparadas com alvenaria convencional, possuindo também menor associação a impactos ambientais, sendo considerada uma prática menos agressiva e mais sustentável.

scholarly journals Validation of Csd Advanced Analysis of Braced Frame Responses Using Subframe Experimental Investigations

2018 ◽  
Vol 64 (2) ◽  
pp. 111-146
Author(s):  
A.M Barszcz
Keyword(s):  
Plastic Hinge ◽  
Stiffness Degradation ◽  
Experimental Investigations ◽  
Deformation Model ◽  
Global Response ◽  
Braced Frame ◽  
Steel Framing ◽  
Angle Section ◽  
Tension And Compression ◽  
Advanced Analysis

AbstractThis paper deals with a Continuous Stiffness Degradation (CSD) version of advanced analysis of braced steel framing. It is based on the gradual stiffness degradation concept of frame and truss members. A novelty of the approach presented herein is related to the introduction of the bracing member response in the whole range of its behaviour in tension and compression, including the post-limit range. The validation of the proposed advanced analysis is performed for braced framework with rolled angle section braces. The validation of the brace force-deformation model has been presented in the author’s earlier publication. The basis for the presented CSD advanced analysis is briefly summarized and its difference with regard to the Refined Plastic Hinge (RPH) version of advanced analysis is emphasized. Experimental investigations dealing with tests on portal braced sub-frame specimens are referred to briefly. Results of the experimental investigations are presented in the form of a frame global response and they are used for the validation of the developed computational model.

scholarly journals QUANTIDADE DE RESÍDUOS DE CONTRUÇÃO NA OBRA DE UMA HABITAÇÃO DE LSF COMPARADA COM UMA EM ALVENARIA CONVENCIONAL

2017 ◽  
Vol 2 (2) ◽  
Author(s):  
Bárbara Holzmann Mass ◽  
Sergio Fernando Tavares
Keyword(s):  
Steel Framing

A construção civil é uma atividade grande geradora de impactos ambientais devido a fatores como: elevado consumo de recursos naturais, poluição ambiental, grande consumo de energia, alto índice de perdas e desperdícios, e geração de resíduos. No Brasil, ela é, em sua maioria, baseada em técnicas construtivas consideradas tradicionais e que acarretam grande consumo de matéria-prima e elevados índices de perdas. Um exemplo é a alvenaria de tijolos convencional que, apesar de muito utilizada, se prova ineficiente do ponto de vista ambiental, devendo ser substituída por outras tecnologias mais eficientes. A literatura técnica, neste sentido, aponta o Light Steel Framing (LSF) como uma alternativa para esta situação. Assim, esta pesquisa objetiva estimar a quantidade de resíduos de construção civil (RCC) gerados na construção de uma edificação padrão concebida em LSF em comparação com uma em alvenaria convencional. Para tal, foi concebido um experimento de campo a partir do acompanhamento da obra de uma edificação residencial de pequeno porte construída em LSF no município de Ponta Grossa/PR, e sobre a qual foi simulada a mesma construção em alvenaria convencional, utilizando-se dados da literatura técnica.  O acompanhamento da obra original em LSF indica um total de materiais adquiridos de 42,64t contra 114,23t da simulação em alvenaria convencional. Além disso, as quantidades de resíduos geradas foram de 5,51t (0,095t/m²) e 35,84t (0,616t/m²), respectivamente. Os resultados mostram que a edificação construída em LSF, além de ser muito mais leve, gera uma quantidade de resíduos muito menor e possui menos da metade do índice de perdas do que a mesma se construída em alvenaria convencional, indicando claros atributos de sustentabilidade.

New Zealand Research Applications of, and Developments in, Low Damage Technology for Steel Structures

2018 ◽  
Vol 763 ◽  
pp. 3-10 ◽  
Author(s):  
Gregory A. MacRae ◽  
George Charles Clifton ◽  
Michel Bruneau
Keyword(s):  
New Zealand ◽  
Large Scale ◽  
Base Isolation ◽  
Steel Structures ◽  
Small Towns ◽  
Steel Buildings ◽  
Construction Methods ◽  
Steel Framing ◽  
Friction Pendulum ◽  
Building Demolition

Over the past few years, the South Island of New Zealand has been subject to significant sequences of earthquake shaking. In particular, 2010-2011 events affected the city of Christchurch resulting in large scale demolition of buildings. Also, the recent and continuing 11/2016 events caused severe damage in the countryside, in small towns, and moderate damage further afield. This paper describes “low damage construction” methods being used in NZ, and especially in the Christchurch rebuild, to limit the possibility of building demolition in future large seismic events. The buildings used in the Christchurch rebuild are generally supported by structural steel framing. These steel buildings include BRB systems, EBF systems with replaceable active links, rocking systems, base isolation using friction pendulum systems and/or lead-rubber dissipaters, RBS beams, lead extrusion dissipaters, yielding flexural dissipaters, and friction connections. Concerns about a number of currently used systems are discussed.

The 200 Year Bridge - The New Goethals Bridge as a Roadmap

2019 ◽  
Author(s):  
Thomas Spoth ◽  
Seth Condell
Keyword(s):  
New York ◽  
New Jersey ◽  
Service Life ◽  
Light Rail ◽  
Staten Island ◽  
Modal Flexibility ◽  
Steel Framing ◽  
Protection Strategies ◽  
Truss Bridge ◽  
To Receive

<p>The Port Authority of New York and New Jersey has completed the replacement of the congested and functionally obsolete Goethals Bridge, a circa 1928 steel cantilever truss bridge, with a dual-span modern cable-stayed bridge connecting Elizabeth, New Jersey and Staten Island, NY. Designed as a 150 year service life structure, the newly opened crossing paves the way towards achieving the possibility of a 200 year bridge, both in material durability, structural redundancy / resilience, and modal flexibility.</p><p>The new crossing features three eastbound and three westbound lanes plus a 3 m wide shared use path (SUP) for bicycles and pedestrians. To accommodate future expansion, the superstructure of the cable stayed spans is designed to receive steel framing to support a variety of possible transit options including light rail, while the substructure need not be strengthened for this future load. With a 274 m main span, the new crossing provides a significant maritime navigational improvement over the original 205 m steel truss span.</p><p>Herein we focus on the strategic application of corrosion protection strategies to achieve the long service life in a competitive bid environment, structural benefit of the design as relates to resiliency, modal flexibility, and operational redundancy to withstand extreme events.</p>

Effect of Steel Framing in Attic/Ceiling Assemblies on Overall Thermal Resistance

2009 ◽  
pp. 159-159-17
Author(s):  
TW Petrie ◽  
J Kśsny ◽  
JA Atchley ◽  
AO Desjarlais
Keyword(s):  
Thermal Resistance ◽  
Steel Framing

Cold-formed steel framing walls with infilled lightweight FGD gypsum Part II: Axial compression tests

2018 ◽  
Vol 132 ◽  
pp. 771-782 ◽  
Author(s):  
Hanheng Wu ◽  
Sisi Chao ◽  
Tianhua Zhou ◽  
Yunxiao Liu
Keyword(s):  
Axial Compression ◽  
Compression Tests ◽  
Fgd Gypsum ◽  
Steel Framing ◽  
Cold Formed Steel

scholarly journals Review on Cold-Formed Steel Connections

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Yeong Huei Lee ◽  
Cher Siang Tan ◽  
Shahrin Mohammad ◽  
Mahmood Md Tahir ◽  
Poi Ngian Shek
Keyword(s):  
Structural Characteristics ◽  
Steel Structures ◽  
Rolled Steel ◽  
Steel Connections ◽  
Steel Framing ◽  
Steel Sections ◽  
Cold Formed Steel ◽  
Hot Rolled ◽  
Hot Rolled Steel ◽  
Review Current

The concept of cold-formed light steel framing construction has been widespread after understanding its structural characteristics with massive research works over the years. Connection serves as one of the important elements for light steel framing in order to achieve its structural stability. Compared to hot-rolled steel sections, cold-formed steel connections perform dissimilarity due to the thin-walled behaviour. This paper aims to review current researches on cold-formed steel connections, particularly for screw connections, storage rack connections, welded connections, and bolted connections. The performance of these connections in the design of cold-formed steel structures is discussed.

Architectural concept for multi-storey apartment building with light steel framing

2010 ◽  
Vol 3 (3) ◽  
pp. 163-168
Author(s):  
Vitor Murtinho ◽  
Helder Ferreira ◽  
António Correia ◽  
Lu&&nums Simões da Silva ◽  
Helena Gervásio ◽  
...  
Keyword(s):  
Apartment Building ◽  
Steel Framing
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