<div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://files.passeidireto.com/0db3773f-db79-4b25-8507-9b07cb7c1f60/bg1.png"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls1 ws2"> </div><div class="t m0 x2 h2 y2 ff1 fs0 fc0 sc0 ls1 ws2">1 </div><div class="c x1 y3 w2 h3"><div class="t m0 x0 h2 y4 ff1 fs0 fc0 sc0 ls1 ws2"> </div></div><div class="t m0 x1 h4 y5 ff2 fs1 fc1 sc0 ls1 ws2">Análise de Estruturas I - Resumo </div><div class="t m0 x1 h4 y6 ff2 fs1 fc1 sc0 ls1 ws2"> </div><div class="t m0 x1 h5 y7 ff3 fs2 fc0 sc0 ls1 ws2">CÓDIGOS DE CONSTRUÇÃO, </div><div class="t m0 x1 h5 y8 ff3 fs2 fc0 sc0 ls1 ws2">PROJETOS E CARGAS PERMANENTES </div><div class="t m0 x1 h6 y9 ff3 fs3 fc1 sc0 ls1 ws2"> </div><div class="t m0 x1 h6 ya ff3 fs3 fc1 sc0 ls1 ws2">Introdução </div><div class="t m0 x1 h7 yb ff2 fs4 fc0 sc0 ls1 ws2"> <span class="_0 blank"> </span>Neste resumo apren<span class="_1 blank"></span>deremos o que <span class="_1 blank"></span>é um <span class="_1 blank"></span>código (ou <span class="_1 blank"></span>norma técnica), <span class="_1 blank"></span>e quais são </div><div class="t m0 x1 h7 yc ff2 fs4 fc0 sc0 ls1 ws2">os <span class="_2 blank"> </span>mais <span class="_2 blank"> </span>importantes <span class="_2 blank"> </span>para <span class="_2 blank"> </span>o <span class="_2 blank"> </span>engenhei<span class="_1 blank"></span>ro <span class="_2 blank"> </span>calculista. <span class="_2 blank"> </span>Veremos <span class="_2 blank"> </span>que <span class="_2 blank"> </span>existem <span class="_2 blank"> </span>d<span class="_1 blank"></span>iferentes </div><div class="t m0 x1 h7 yd ff2 fs4 fc0 sc0 ls1 ws2">normas <span class="_3 blank"> </span>para <span class="_3 blank"> </span>cada <span class="_3 blank"> </span>tipo <span class="_3 blank"> </span>de <span class="_3 blank"> </span>estrutura <span class="_3 blank"> </span>e <span class="_3 blank"> </span>cada<span class="_1 blank"></span> <span class="_3 blank"> </span>material <span class="_3 blank"> </span>de <span class="_3 blank"> </span>construção <span class="_3 blank"> </span>utilizado <span class="_3 blank"> </span>nas </div><div class="t m0 x1 h7 ye ff2 fs4 fc0 sc0 ls1 ws2">estruturas principais. </div><div class="t m0 x1 h7 yf ff2 fs4 fc0 sc0 ls1 ws2"> <span class="_0 blank"> </span>Estudaremos <span class="_4 blank"> </span>também <span class="_4 blank"> </span>as <span class="_4 blank"> </span>cargas <span class="_4 blank"> </span>permanentes, <span class="_4 blank"> </span>o <span class="_4 blank"> </span>que <span class="_4 blank"> </span>são <span class="_4 blank"> </span>elas <span class="_4 blank"> </span>e <span class="_4 blank"> </span>quais <span class="_4 blank"> </span>são <span class="_4 blank"> </span>as </div><div class="t m0 x1 h7 y10 ff2 fs4 fc0 sc0 ls1 ws2">principais ações deste tipo em uma estrutura. </div><div class="t m0 x1 h7 y11 ff2 fs4 fc0 sc0 ls1 ws2"> </div><div class="t m0 x1 h6 y12 ff3 fs3 fc1 sc0 ls1 ws2">Códigos ou normas técnicas </div><div class="t m0 x1 h7 y13 ff2 fs4 fc0 sc0 ls1 ws2"> <span class="_0 blank"> </span>Um código, padrão <span class="_1 blank"></span>ou norma técnica <span class="_1 blank"></span>é <span class="fc1">um documento, nor<span class="_1 blank"></span>malmente expedido </span></div><div class="t m0 x1 h7 y14 ff2 fs4 fc1 sc0 ls1 ws2">por <span class="_5 blank"> </span>um <span class="_5 blank"> </span>órgão <span class="_5 blank"> </span>competente <span class="_5 blank"> </span>e <span class="_5 blank"> </span>especializado <span class="_5 blank"> </span>para <span class="_5 blank"> </span>tal, <span class="_5 blank"> </span>que <span class="_5 blank"> </span>contém <span class="_5 blank"> </span>todas <span class="_5 blank"> </span>as <span class="_5 blank"> </span>instruções <span class="_5 blank"> </span>e </div><div class="t m0 x1 h7 y15 ff2 fs4 fc1 sc0 ls1 ws2">recomendações <span class="_6 blank"> </span>necessárias<span class="fc0"> <span class="_6 blank"> </span>para <span class="_6 blank"> </span>que <span class="_6 blank"> </span>se <span class="_6 blank"> </span>utilize <span class="_6 blank"> </span>um <span class="_6 blank"> </span>determinado <span class="_6 blank"> </span>material <span class="_7 blank"> </span>ou </span></div><div class="t m0 x1 h7 y16 ff2 fs4 fc0 sc0 ls1 ws2">determinado procedimento de forma segura e ad<span class="_1 blank"></span>equada ao seu objetivo. </div><div class="t m0 x1 h7 y17 ff2 fs4 fc0 sc0 ls1 ws2"> <span class="_0 blank"> </span>Basicamente, <span class="_1 blank"></span>as <span class="_8 blank"></span>normas <span class="_8 blank"></span>técnicas <span class="_8 blank"></span>servem d<span class="_1 blank"></span>e <span class="_8 blank"></span>apoio <span class="_1 blank"></span>para <span class="_8 blank"></span>o <span class="_1 blank"></span>engenheiro <span class="_8 blank"></span>(e <span class="_8 blank"></span>diversos </div><div class="t m0 x1 h7 y18 ff2 fs4 fc0 sc0 ls1 ws2">outros pro<span class="_1 blank"></span>fissionais) <span class="_1 blank"></span>durante <span class="_8 blank"></span>todas as fases <span class="_8 blank"></span>do projeto, <span class="_8 blank"></span>desde a <span class="_8 blank"></span>conc<span class="_9 blank"> </span>epção <span class="_1 blank"></span>da <span class="_1 blank"></span>estrutura </div><div class="t m0 x1 h7 y19 ff2 fs4 fc0 sc0 ls1 ws2">até o acompanhamento após a construção. </div><div class="t m0 x1 h7 y1a ff2 fs4 fc0 sc0 ls1 ws2"> <span class="_0 blank"> </span>Os <span class="_9 blank"> </span>órgãos <span class="_9 blank"> </span>que <span class="_9 blank"> </span>emitem <span class="_9 blank"> </span>os <span class="_9 blank"> </span>códigos <span class="_9 blank"> </span>de <span class="_9 blank"> </span>projeto <span class="_9 blank"> </span>são <span class="_9 blank"> </span>reconhecidos <span class="_9 blank"> </span>para <span class="_9 blank"> </span>isso. <span class="_a blank"> </span><span class="fc1">Cabe </span></div><div class="t m0 x1 h7 y1b ff2 fs4 fc1 sc0 ls1 ws2">ao <span class="_3 blank"> </span>eng<span class="_1 blank"></span>enheiro, <span class="_b blank"> </span>juntamente <span class="_b blank"> </span>com <span class="_b blank"> </span>as <span class="_b blank"> </span>demais <span class="_b blank"> </span>partes <span class="_b blank"> </span>interessadas <span class="_b blank"> </span>no <span class="_b blank"> </span>projeto <span class="_b blank"> </span>(como </div><div class="t m0 x1 h7 y1c ff2 fs4 fc1 sc0 ls1 ws2">clientes), definir quais são as normas a se<span class="_9 blank"> </span>rem utilizadas durante o desenvolvimento do </div><div class="t m0 x1 h7 y1d ff2 fs4 fc1 sc0 ls1 ws0">empreendimento.<span class="fc0 ws2"> <span class="_c blank"> </span>Algumas <span class="_c blank"> </span>organizações <span class="_c blank"> </span>reconhecidas <span class="_a blank"> </span>que <span class="_c blank"> </span>emitem <span class="_c blank"> </span>normas <span class="_c blank"> </span>técnicas </span></div><div class="t m0 x1 h7 y1e ff2 fs4 fc0 sc0 ls1 ws2">são: </div><div class="t m0 x3 h7 y1f ff4 fs4 fc0 sc0 ls1 ws1">\uf0b7<span class="ff5 ls0 ws2"> <span class="ff2 ls1">Associação Brasileira de Normas Técnicas (ABNT); </span></span></div><div class="t m0 x3 h7 y20 ff4 fs4 fc0 sc0 ls1 ws1">\uf0b7<span class="ff5 ls0 ws2"> <span class="ff2 ls1">American National Standards Institute (ANSI); </span></span></div><div class="t m0 x3 h7 y21 ff4 fs4 fc0 sc0 ls1 ws1">\uf0b7<span class="ff5 ls0 ws2"> <span class="ff2 ls1">American Institute for Steel Construction (AISC); </span></span></div><div class="t m0 x3 h7 y22 ff4 fs4 fc0 sc0 ls1 ws1">\uf0b7<span class="ff5 ls0 ws2"> <span class="ff2 ls1">Det Nroske Veritas (DNV); </span></span></div></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://files.passeidireto.com/0db3773f-db79-4b25-8507-9b07cb7c1f60/bg2.png"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls1 ws2"> </div><div class="t m0 x2 h2 y2 ff1 fs0 fc0 sc0 ls1 ws2">2 </div><div class="c x1 y3 w2 h3"><div class="t m0 x0 h2 y4 ff1 fs0 fc0 sc0 ls1 ws2"> </div></div><div class="t m0 x3 h7 y23 ff4 fs4 fc0 sc0 ls1 ws1">\uf0b7<span class="ff5 ls0 ws2"> <span class="ff2 ls1">International Organization for Standardization (ISO); </span></span></div><div class="t m0 x3 h7 y24 ff4 fs4 fc0 sc0 ls1 ws1">\uf0b7<span class="ff5 ls0 ws2"> <span class="ff2 ls1">Institute for Electrical and Electronics Engineers (IEEE). </span></span></div><div class="t m0 x1 h7 y25 ff2 fs4 fc0 sc0 ls1 ws2"> <span class="_0 blank"> </span>Veremos <span class="_a blank"> </span>ao <span class="_a blank"> </span>longo <span class="_c blank"> </span>do <span class="_a blank"> </span>curso <span class="_a blank"> </span>de <span class="_c blank"> </span>Análise <span class="_a blank"> </span>de <span class="_a blank"> </span>Estruturas <span class="_c blank"> </span>as <span class="_a blank"> </span>normas <span class="_a blank"> </span>emitidas <span class="_a blank"> </span>pela </div><div class="t m0 x1 h7 y26 ff2 fs4 fc1 sc0 ls1 ws0">ABNT<span class="fc0 ws2">, por se tratarem das mais utilizadas pelos engenheiros civis no Brasil. </span></div><div class="t m0 x1 h7 y27 ff2 fs4 fc0 sc0 ls1 ws2"> <span class="_0 blank"> </span>Apenas <span class="_2 blank"> </span>a <span class="_2 blank"> </span>ABNT <span class="_2 blank"> </span>reúne <span class="fc1">mais <span class="_4 blank"> </span>de <span class="_2 blank"> </span>880 normas</span> <span class="_4 blank"> </span>destinadas <span class="_2 blank"> </span>exclusivamente <span class="_2 blank"> </span>para </div><div class="t m0 x1 h7 y28 ff2 fs4 fc0 sc0 ls1 ws2">edificações. <span class="_8 blank"></span>Dessas, <span class="_8 blank"></span>quase <span class="_1 blank"></span>500 <span class="_8 blank"></span>são <span class="_1 blank"></span>relacionadas <span class="_8 blank"></span>a <span class="_8 blank"></span>desempenho, <span class="_8 blank"></span>projetos, espe<span class="_1 blank"></span>cificação </div><div class="t m0 x1 h7 y29 ff2 fs4 fc0 sc0 ls1 ws2">de materiais e sistemas construtivos. </div><div class="t m0 x1 h7 y2a ff2 fs4 fc0 sc0 ls1 ws2"> <span class="_0 blank"> </span>Obviamente não precisamos ter <span class="_9 blank"> </span>um conhecimento completo sobre todas essas </div><div class="t m0 x1 h7 y2b ff2 fs4 fc0 sc0 ls1 ws2">normas. No <span class="_2 blank"> </span>entanto, devemos con<span class="_1 blank"></span>hecer os <span class="_2 blank"> </span>principais códigos ligados <span class="_2 blank"> </span>à análise de </div><div class="t m0 x1 h7 y2c ff2 fs4 fc0 sc0 ls1 ws2">estruturas. Atualmente, <span class="_9 blank"> </span><span class="fc1">temos <span class="_9 blank"> </span>quase <span class="_9 blank"> </span>20 <span class="_9 blank"> </span>normas da <span class="_9 blank"> </span>ABNT<span class="_9 blank"> </span></span> re<span class="_9 blank"> </span>lacionadas diretamente <span class="_9 blank"> </span>à </div><div class="t m0 x1 h7 y2d ff2 fs4 fc0 sc0 ls1 ws2">análise <span class="_8 blank"></span>de <span class="_8 blank"></span>estruturas. <span class="_8 blank"></span>As <span class="_1 blank"></span>mais <span class="_8 blank"></span>importantes, <span class="_8 blank"></span>e <span class="_1 blank"></span>essenciais <span class="_8 blank"></span>para <span class="_8 blank"></span>um <span class="_8 blank"></span>bom <span class="_1 blank"></span>projeto <span class="_8 blank"></span>de <span class="_8 blank"></span>cálculo </div><div class="t m0 x1 h7 y2e ff2 fs4 fc0 sc0 ls1 ws2">estrutural, são (os números após o \u201c:\u201d referem-se ao ano em que a norma foi emitida): </div><div class="t m0 x3 h7 y2f ff4 fs4 fc0 sc0 ls1 ws1">\uf0b7<span class="ff5 ls0 ws2"> <span class="ff2 ls1">NBR 6120:1980 - Cargas para o cálculo de estruturas de edificações; </span></span></div><div class="t m0 x3 h7 y30 ff4 fs4 fc0 sc0 ls1 ws1">\uf0b7<span class="ff5 ls0 ws2"> <span class="ff2 ls1">NBR 6123:1988 - Forças devidas ao vento em edificações; </span></span></div><div class="t m0 x3 h7 y31 ff4 fs4 fc0 sc0 ls1 ws1">\uf0b7<span class="ff5 ls0 ws2"> <span class="ff2 ls1">NBR 8681:2003 - Ações e segurança nas estruturas - Procedimento; </span></span></div><div class="t m0 x3 h7 y32 ff4 fs4 fc0 sc0 ls1 ws1">\uf0b7<span class="ff5 ls0 ws2"> <span class="ff2 ls1">NBR 6118:2014 - Projeto de estruturas de concreto - Procedimento; </span></span></div><div class="t m0 x3 h7 y33 ff4 fs4 fc0 sc0 ls1 ws1">\uf0b7<span class="ff5 ls0 ws2"> <span class="ff2 ls1">NBR 9062:2011 - Projeto e execução de estruturas de concreto pré-moldado; </span></span></div><div class="t m0 x3 h7 y34 ff4 fs4 fc0 sc0 ls1 ws1">\uf0b7<span class="ff5 ls0 ws2"> <span class="ff2 ls1">NBR <span class="_5 blank"> </span>8800:2008 <span class="_5 blank"> </span>- <span class="_a blank"> </span>Projeto <span class="_5 blank"> </span>de <span class="_5 blank"> </span>estruturas <span class="_5 blank"> </span>de <span class="_a blank"> </span>aço <span class="_5 blank"> </span>e <span class="_5 blank"> </span>de <span class="_5 blank"> </span>estruturas <span class="_5 blank"> </span>mistas <span class="_5 blank"> </span>de <span class="_a blank"> </span>aço <span class="_5 blank"> </span>e </span></span></div><div class="t m0 x4 h7 y35 ff2 fs4 fc0 sc0 ls1 ws2">concreto de edifícios; </div><div class="t m0 x3 h7 y36 ff4 fs4 fc0 sc0 ls1 ws1">\uf0b7<span class="ff5 ls0 ws2"> <span class="ff2 ls1">NBR 7190:1997 - Projeto de estruturas de madeira. </span></span></div><div class="t m0 x1 h7 y37 ff2 fs4 fc0 sc0 ls1 ws2"> <span class="_0 blank"> </span>Dessas <span class="_9 blank"> </span>normas, <span class="_5 blank"> </span>discutiremos <span class="_9 blank"> </span>neste <span class="_5 blank"> </span>curso <span class="_9 blank"> </span>apenas <span class="_9 blank"> </span>as <span class="_5 blank"> </span>duas <span class="_5 blank"> </span>primeiras. <span class="_9 blank"> </span>As <span class="_5 blank"> </span>demais </div><div class="t m0 x1 h7 y38 ff2 fs4 fc0 sc0 ls1 ws2">serão apresentadas em outros cursos da áre<span class="_1 blank"></span>a de estruturas, como estruturas metálicas </div><div class="t m0 x1 h7 y39 ff2 fs4 fc0 sc0 ls1 ws2">e estruturas de concreto. </div><div class="t m0 x1 h7 y3a ff2 fs4 fc0 sc0 ls1 ws2"> </div><div class="t m0 x1 h6 y3b ff3 fs3 fc1 sc0 ls1 ws2">Cargas de projeto </div><div class="t m0 x1 h7 y3c ff2 fs4 fc0 sc0 ls2 ws2"> <span class="fc1 ls1">Cargas <span class="_3 blank"> </span>de <span class="_3 blank"> </span>projeto <span class="_d blank"> </span>são <span class="_3 blank"> </span>todas <span class="_3 blank"> </span>as <span class="_d blank"> </span>ações <span class="_3 blank"> </span>que <span class="_3 blank"> </span>geram <span class="_d blank"> </span>esforços <span class="_3 blank"> </span>em <span class="_3 blank"> </span>uma <span class="_d blank"> </span>dada </span></div><div class="t m0 x1 h7 y3d ff2 fs4 fc1 sc0 ls1 ws0">estrutura<span class="fc0 ws2">. <span class="_5 blank"> </span>Uma <span class="_5 blank"> </span>estrutura <span class="_9 blank"> </span>está <span class="_5 blank"> </span>sujeita <span class="_5 blank"> </span>a <span class="_5 blank"> </span>pesos <span class="_5 blank"> </span>dos <span class="_5 blank"> </span>materiais, <span class="_9 blank"> </span>vento, <span class="_5 blank"> </span>sismos, <span class="_5 blank"> </span>incêndios, </span></div><div class="t m0 x1 h7 y3e ff2 fs4 fc0 sc0 ls1 ws2">entre muitas outras ações. </div><div class="t m0 x1 h7 y3f ff2 fs4 fc0 sc0 ls1 ws2"> <span class="_0 blank"> </span>De <span class="_4 blank"> </span>acordo <span class="_4 blank"> </span>com <span class="_2 blank"> </span>a <span class="_4 blank"> </span>NBR <span class="_4 blank"> </span>6120, <span class="_4 blank"> </span>as <span class="_2 blank"> </span>cargas <span class="_4 blank"> </span>podem <span class="_4 blank"> </span>ser <span class="_2 blank"> </span>classificadas <span class="_4 blank"> </span>como <span class="_2 blank"> </span><span class="fc1">cargas </span></div><div class="t m0 x1 h7 y40 ff2 fs4 fc1 sc0 ls1 ws0">permanentes<span class="fc0 ws2"> <span class="_4 blank"> </span>(representadas <span class="_2 blank"> </span>pela <span class="_4 blank"> </span>letra <span class="_4 blank"> </span>\u201cg\u201d) <span class="_2 blank"> </span>e <span class="_2 blank"> </span><span class="fc1">cargas <span class="_2 blank"> </span>acidentais</span> <span class="_4 blank"> </span>(representadas <span class="_2 blank"> </span>pela </span></div><div class="t m0 x1 h7 y41 ff2 fs4 fc0 sc0 ls1 ws2">letra \u201cq\u201d). As cargas acidentais fazem parte de um grupo maior de ações, chamadas de </div><div class="t m0 x1 h7 y42 ff2 fs4 fc1 sc0 ls1 ws2">cargas variáveis<span class="fc0">. </span></div><div class="t m0 x1 h7 y43 ff2 fs4 fc0 sc0 ls1 ws2"> <span class="_0 blank"> </span>Cargas <span class="_9 blank"> </span>permanentes <span class="_9 blank"> </span>são <span class="_9 blank"> </span>o <span class="_9 blank"> </span>tipo de <span class="_9 blank"> </span>ações <span class="_9 blank"> </span>que <span class="_9 blank"> </span>atuam <span class="_9 blank"> </span>sempre <span class="_9 blank"> </span>na <span class="_9 blank"> </span>estrutura e <span class="_a blank"> </span><span class="fc1">não </span></div><div class="t m0 x1 h7 y44 ff2 fs4 fc1 sc0 ls1 ws2">variam <span class="_c blank"> </span>conforme <span class="_c blank"> </span>o <span class="_c blank"> </span>tempo<span class="_9 blank"> </span><span class="fc0">. <span class="_c blank"> </span>É <span class="_c blank"> </span>o <span class="_c blank"> </span>caso <span class="_c blank"> </span>dos <span class="_c blank"> </span>peso<span class="_9 blank"> </span>s <span class="_a blank"> </span>dos <span class="_4 blank"> </span>elementos <span class="_a blank"> </span>c<span class="_9 blank"> </span>onstrutivos, <span class="_c blank"> </span>do <span class="_c blank"> </span>peso </span></div></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img fetchpriority="low" loading="lazy" class="bi x0 y0 w1 h1" alt="" src="https://files.passeidireto.com/0db3773f-db79-4b25-8507-9b07cb7c1f60/bg3.png"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls1 ws2"> </div><div class="t m0 x2 h2 y2 ff1 fs0 fc0 sc0 ls1 ws2">3 </div><div class="c x1 y3 w2 h3"><div class="t m0 x0 h2 y4 ff1 fs0 fc0 sc0 ls1 ws2"> </div></div><div class="t m0 x1 h7 y45 ff2 fs4 fc0 sc0 ls1 ws2">próprio <span class="_a blank"> </span>da <span class="_a blank"> </span>estrutura <span class="_c blank"> </span>e <span class="_5 blank"> </span>dos <span class="_c blank"> </span>pesos <span class="_a blank"> </span>das <span class="_a blank"> </span>instalações <span class="_c blank"> </span>permanentes. <span class="_a blank"> </span>Já <span class="_a blank"> </span>as <span class="_a blank"> </span>cargas <span class="_c blank"> </span>variáveis </div><div class="t m0 x1 h7 y46 ff2 fs4 fc0 sc0 ls1 ws2">são <span class="_9 blank"> </span>aquelas <span class="_9 blank"> </span>que <span class="_5 blank"> </span>possuem <span class="_9 blank"> </span><span class="fc1">alguma <span class="_9 blank"> </span>variação <span class="_9 blank"> </span>ao <span class="_5 blank"> </span>longo <span class="_9 blank"> </span>do <span class="_9 blank"> </span>tempo</span>, <span class="_5 blank"> </span>não <span class="_9 blank"> </span>estando <span class="_9 blank"> </span>aplicadas </div><div class="t m0 x1 h7 y47 ff2 fs4 fc0 sc0 ls1 ws2">sempre <span class="_9 blank"> </span>sobre a <span class="_9 blank"> </span>estrutura. <span class="_9 blank"> </span>Alguns <span class="_9 blank"> </span>exemplos de <span class="_9 blank"> </span>cargas <span class="_9 blank"> </span>variáveis <span class="_9 blank"> </span>são as <span class="_9 blank"> </span>ações <span class="_9 blank"> </span>do <span class="_9 blank"> </span>vento, </div><div class="t m0 x1 h7 y48 ff2 fs4 fc0 sc0 ls1 ws2">os <span class="_5 blank"> </span>efeitos <span class="_5 blank"> </span>de <span class="_9 blank"> </span>sismos, <span class="_5 blank"> </span>as <span class="_5 blank"> </span>sobrecargas <span class="_5 blank"> </span>de <span class="_5 blank"> </span>pessoas, <span class="_5 blank"> </span>o <span class="_5 blank"> </span>peso <span class="_5 blank"> </span>de <span class="_9 blank"> </span>produtos <span class="_5 blank"> </span>em <span class="_5 blank"> </span>um <span class="_5 blank"> </span>depósito </div><div class="t m0 x1 h7 y49 ff2 fs4 fc0 sc0 ls1 ws2">de suprimentos, etc. </div><div class="t m0 x1 h7 y4a ff2 fs4 fc0 sc0 ls1 ws2"> <span class="_0 blank"> </span>Das cargas variáveis, <span class="_9 blank"> </span>chamamos de cargas acidentais aque<span class="_9 blank"> </span>las que <span class="_9 blank"> </span><span class="fc1">podem atuar </span></div><div class="t m0 x1 h7 y4b ff2 fs4 fc1 sc0 ls1 ws2">na estrutura <span class="_9 blank"> </span>em função <span class="_9 blank"> </span>do seu <span class="_9 blank"> </span>uso<span class="fc0">, <span class="_9 blank"> </span>como a <span class="_9 blank"> </span>sobrecarga de <span class="_9 blank"> </span>pessoas e veículos, <span class="_9 blank"> </span>e o <span class="_9 blank"> </span>peso </span></div><div class="t m0 x1 h7 y4c ff2 fs4 fc0 sc0 ls1 ws2">de móveis. </div><div class="t m0 x1 h7 y4d ff2 fs4 fc0 sc0 ls1 ws2"> </div><div class="t m0 x1 h6 y4e ff3 fs3 fc1 sc0 ls1 ws2">Cargas permanentes </div><div class="t m0 x1 h7 y4f ff2 fs4 fc0 sc0 ls1 ws2"> <span class="_0 blank"> </span>É <span class="_e blank"> </span>possível <span class="_e blank"> </span>obter <span class="_e blank"> </span>os <span class="_e blank"> </span>valores <span class="_e blank"> </span>das <span class="_e blank"> </span>cargas <span class="_e blank"> </span>permanentes <span class="_e blank"> </span>através <span class="_e blank"> </span>de <span class="_e blank"> </span>estudos </div><div class="t m0 x1 h7 y50 ff2 fs4 fc0 sc0 ls1 ws2">experimentais. <span class="_a blank"> </span>Na <span class="_c blank"> </span>ausência <span class="_c blank"> </span>destes, <span class="_c blank"> </span>utiliza-se <span class="_c blank"> </span>a <span class="_c blank"> </span><span class="fc1">tabela <span class="_a blank"> </span>1<span class="_9 blank"> </span></span> <span class="_a blank"> </span>da <span class="_c blank"> </span>NBR <span class="_c blank"> </span>6120 <span class="_c blank"> </span>para <span class="_a blank"> </span>adotar <span class="_c blank"> </span>os </div><div class="t m0 x1 h7 y51 ff2 fs4 fc0 sc0 ls1 ws2">pesos <span class="_4 blank"> </span>e<span class="_9 blank"> </span>specíficos <span class="_4 blank"> </span>aparentes <span class="_2 blank"> </span>dos <span class="_4 blank"> </span>materiais <span class="_2 blank"> </span>de <span class="_2 blank"> </span>construção <span class="_4 blank"> </span>mais <span class="_2 blank"> </span>frequentes. <span class="_2 blank"> </span>A <span class="_2 blank"> </span>tabela </div><div class="t m0 x1 h7 y52 ff2 fs4 fc0 sc0 ls1 ws2">abaixo resume alguns dos valores utilizados: </div><div class="t m0 x1 h7 y53 ff2 fs4 fc0 sc0 ls1 ws2"> </div><div class="t m0 x5 h8 y10 ff2 fs4 fc0 sc0 ls1 ws2">Materiais <span class="_f blank"> </span><span class="v1">Peso específico </span></div><div class="t m0 x6 h7 y54 ff2 fs4 fc0 sc0 ls1 ws2">aparente (kN/m³) </div><div class="t m0 x7 h7 y55 ff2 fs4 fc0 sc0 ls1 ws2">2 Blocos artificiais </div><div class="t m0 x8 h7 y56 ff2 fs4 fc0 sc0 ls1 ws2">Blocos de argamassa </div><div class="t m0 x9 h7 y57 ff2 fs4 fc0 sc0 ls1 ws2">Cimento amianto </div><div class="t m0 xa h7 y58 ff2 fs4 fc0 sc0 ls1 ws2">Lajotas cerâmicas </div><div class="t m0 xb h7 y59 ff2 fs4 fc0 sc0 ls1 ws2">Tijolos furados </div><div class="t m0 xc h7 y5a ff2 fs4 fc0 sc0 ls1 ws2">Tijolos maciços </div><div class="t m0 xd h7 y5b ff2 fs4 fc0 sc0 ls1 ws2">Tijolos sílico-calcáreos </div><div class="t m0 xe h7 y56 ff2 fs4 fc0 sc0 ls1 ws2">22 </div><div class="t m0 xe h7 y57 ff2 fs4 fc0 sc0 ls1 ws2">20 </div><div class="t m0 xe h7 y58 ff2 fs4 fc0 sc0 ls3 ws2">18 </div><div class="t m0 xe h7 y59 ff2 fs4 fc0 sc0 ls1 ws2">13 </div><div class="t m0 xe h7 y5a ff2 fs4 fc0 sc0 ls3 ws2">18 </div><div class="t m0 xe h7 y5b ff2 fs4 fc0 sc0 ls1 ws2">20 </div><div class="t m0 x7 h7 y5c ff2 fs4 fc0 sc0 ls1 ws2">3 Revestimentos e </div><div class="t m0 xf h7 y5d ff2 fs4 fc0 sc0 ls3 ws2">concretos </div><div class="t m0 x10 h7 y5e ff2 fs4 fc0 sc0 ls1 ws2">Argamassa de cal, cimento e areia </div><div class="t m0 x11 h7 y5f ff2 fs4 fc0 sc0 ls1 ws2">Argamassa de cimento e areia </div><div class="t m0 x12 h7 y60 ff2 fs4 fc0 sc0 ls1 ws2">Argamassa de gesso </div><div class="t m0 x9 h7 y61 ff2 fs4 fc0 sc0 ls1 ws2">Concreto simples </div><div class="t m0 x9 h7 y62 ff2 fs4 fc0 sc0 ls1 ws2">Concreto armado </div><div class="t m0 xe h7 y5e ff2 fs4 fc0 sc0 ls1 ws2">19 </div><div class="t m0 xe h7 y5f ff2 fs4 fc0 sc0 ls1 ws2">21 </div><div class="t m0 x13 h7 y60 ff2 fs4 fc0 sc0 ls1 ws2">12,5 </div><div class="t m0 xe h7 y61 ff2 fs4 fc0 sc0 ls1 ws2">24 </div><div class="t m0 xe h7 y62 ff2 fs4 fc0 sc0 ls1 ws2">25 </div><div class="t m0 x14 h7 y63 ff2 fs4 fc0 sc0 ls1 ws2">5 Metais </div><div class="t m0 x15 h7 y64 ff2 fs4 fc0 sc0 ls1 ws2">Aço </div><div class="t m0 x16 h7 y65 ff2 fs4 fc0 sc0 ls1 ws2">Alumínio e ligas </div><div class="t m0 x17 h7 y66 ff2 fs4 fc0 sc0 ls1 ws2">Bronze </div><div class="t m0 x18 h7 y67 ff2 fs4 fc0 sc0 ls1 ws2">Chumbo </div><div class="t m0 x13 h7 y64 ff2 fs4 fc0 sc0 ls1 ws2">78,5 </div><div class="t m0 xe h7 y65 ff2 fs4 fc0 sc0 ls1 ws2">28 </div><div class="t m0 xe h7 y66 ff2 fs4 fc0 sc0 ls1 ws2">85 </div><div class="t m0 x19 h7 y67 ff2 fs4 fc0 sc0 ls1 ws2">114 </div></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pf4" class="pf w0 h0" data-page-no="4"><div class="pc pc4 w0 h0"><img fetchpriority="low" loading="lazy" class="bi x0 y0 w1 h1" alt="" src="https://files.passeidireto.com/0db3773f-db79-4b25-8507-9b07cb7c1f60/bg4.png"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls1 ws2"> </div><div class="t m0 x2 h2 y2 ff1 fs0 fc0 sc0 ls1 ws2">4 </div><div class="c x1 y3 w2 h3"><div class="t m0 x0 h2 y4 ff1 fs0 fc0 sc0 ls1 ws2"> </div></div><div class="t m0 x1a h7 y68 ff2 fs4 fc0 sc0 ls1 ws2">Cobre </div><div class="t m0 x1b h7 y69 ff2 fs4 fc0 sc0 ls1 ws2">Ferro fundido </div><div class="t m0 x18 h7 y6a ff2 fs4 fc0 sc0 ls1 ws2">Estanho </div><div class="t m0 x1a h7 y6b ff2 fs4 fc0 sc0 ls1 ws2">Latão </div><div class="t m0 x1c h7 y6c ff2 fs4 fc0 sc0 ls1 ws2">Zinco </div><div class="t m0 xe h7 y68 ff2 fs4 fc0 sc0 ls1 ws2">89 </div><div class="t m0 x13 h7 y69 ff2 fs4 fc0 sc0 ls1 ws2">72,5 </div><div class="t m0 xe h7 y6a ff2 fs4 fc0 sc0 ls1 ws2">74 </div><div class="t m0 xe h7 y6b ff2 fs4 fc0 sc0 ls1 ws2">85 </div><div class="t m0 xe h7 y6c ff2 fs4 fc0 sc0 ls1 ws2">72 </div><div class="t m0 x1 h7 y6d ff2 fs4 fc0 sc0 ls1 ws2"> </div><div class="t m0 x1 h7 y6e ff2 fs4 fc0 sc0 ls1 ws2"> <span class="_0 blank"> </span>Por <span class="_5 blank"> </span>exemplo, <span class="_a blank"> </span>se <span class="_a blank"> </span>tivermos <span class="_5 blank"> </span>que <span class="_a blank"> </span>utilizar <span class="_5 blank"> </span>uma <span class="_a blank"> </span>parede <span class="_5 blank"> </span>de <span class="_a blank"> </span>tijolo <span class="_5 blank"> </span>fu<span class="_9 blank"> </span>rado <span class="_a blank"> </span>com <span class="_5 blank"> </span>2m <span class="_a blank"> </span>de<span class="_9 blank"> </span> </div><div class="t m0 x1 h7 y6f ff2 fs4 fc0 sc0 ls1 ws2">altura <span class="_b blank"> </span>e <span class="_b blank"> </span>14cm <span class="_b blank"> </span>de <span class="_b blank"> </span>espessura, <span class="_b blank"> </span>temos <span class="_b blank"> </span>que <span class="_b blank"> </span>o <span class="_b blank"> </span>carregamento <span class="_b blank"> </span>linear <span class="_b blank"> </span>a <span class="_b blank"> </span>ser <span class="_b blank"> </span>aplicado <span class="_b blank"> </span>no </div><div class="t m0 x1 h7 y70 ff2 fs4 fc0 sc0 ls1 ws2">elemento estrutural é de: </div><div class="t m0 x1 h7 y71 ff2 fs4 fc0 sc0 ls1 ws2"> </div><div class="t m0 x1d h9 y72 ff6 fs4 fc0 sc0 ls1">\ue74c</div><div class="t m0 x1e ha y73 ff6 fs5 fc0 sc0 ls4">\ueb35<span class="fs4 ls1 ws3 v2">= \ue7db</span></div><div class="t m0 x1f hb y73 ff6 fs5 fc0 sc0 ls1 ws2">\uebe7\uebdc\uebdd\uebe2\uebdf\uebe2 \uebd9\uebe8\uebe5\uebd4\uebd7\uebe2<span class="_5 blank"> </span><span class="fs4 v2">.<span class="_2 blank"> </span>\u210e<span class="_9 blank"> </span>.<span class="_2 blank"> </span>\ue741\ue74f\ue74c<span class="_d blank"> </span>=<span class="_3 blank"> </span>13<span class="_9 blank"> </span>,0 \ue754 2,0<span class="_9 blank"> </span> \ue754 0,14<span class="_d blank"> </span>=<span class="_3 blank"> </span>3<span class="_9 blank"> </span>,64\ue747\ue730/\ue749<span class="_9 blank"> </span><span class="ff2"> </span></span></div><div class="t m0 x1 h7 y74 ff2 fs4 fc0 sc0 ls1 ws2"> </div><div class="t m0 x1 h7 y75 ff2 fs4 fc0 sc0 ls1 ws2"> <span class="_0 blank"> </span>Se <span class="_4 blank"> </span>tivermos <span class="_4 blank"> </span>uma <span class="_4 blank"> </span>viga <span class="_4 blank"> </span>de <span class="_4 blank"> </span>concreto <span class="_4 blank"> </span>armado <span class="_2 blank"> </span>de <span class="_4 blank"> </span>15cm <span class="_4 blank"> </span>de <span class="_4 blank"> </span>largura <span class="_4 blank"> </span>por <span class="_4 blank"> </span>45c<span class="_9 blank"> </span>m <span class="_4 blank"> </span>de </div><div class="t m0 x1 h7 y76 ff2 fs4 fc0 sc0 ls1 ws2">altura, o peso próprio do elemento é de: </div><div class="t m0 x1 h7 y77 ff2 fs4 fc0 sc0 ls1 ws2"> </div><div class="t m0 x20 h9 y78 ff6 fs4 fc0 sc0 ls1">\ue74c</div><div class="t m0 x1e ha y79 ff6 fs5 fc0 sc0 ls4">\ueb36<span class="fs4 ls1 ws3 v2">= \ue7db</span></div><div class="t m0 x1f hb y79 ff6 fs5 fc0 sc0 ls1 ws2">\uebd6\uebe2\uebe1\uebd6\uebe5\uebd8\uebe7\uebe2 \uebd4\uebe5\uebe0\uebd4\uebd7\uebe2<span class="_5 blank"> </span><span class="fs4 v2">.<span class="_2 blank"> </span>\u210e<span class="_9 blank"> </span>.<span class="_2 blank"> </span>\ue73e<span class="_d blank"> </span>=<span class="_d blank"> </span>25 \ue754<span class="_9 blank"> </span> 0,15 \ue754<span class="_9 blank"> </span> 0,45<span class="_3 blank"> </span>=<span class="_d blank"> </span>1,69\ue747\ue730<span class="_9 blank"> </span>/\ue749<span class="ff2"> </span></span></div><div class="t m0 x1 h6 y7a ff3 fs3 fc1 sc0 ls1 ws2"> </div></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div>
Compartilhar