A NBR 6118: 2014 apresenta a emenda das barras, segundo um dos seguintes tipos:
a) por traspasse (ou transpasse);
b) por luvas com preenchimento metálico, rosqueadas ou prensadas;
c) por solda;
d) por outros dispositivos devidamente justificados.
Ahh.. então pode neh? Depende!
Normalmente, o aço CA50 nervurado (laminado a quente) – que é o mais comum no nosso dia a dia, não é soldável!
Exceto os que sejam indicados pelo fabricante (como o aço CA50S da ArcelorMittal). A norma ABNT NBR 8965 determina os limites para que o aço seja considerado soldável.
Posso utilizar qualquer tipo de solda?
Existem dois tipos de solda utilizados em barras de aço construção civil:
1. Solda estrutural: (traspasse, por exemplo)
2. Solda não-estrutural: (Solda de posicionamento dos elementos estruturais para substituir arame recozido.)
Em ambos, deve-se utilizar solda e eletrodos específicos ( GMAW – MIG MAG)
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