CONSTRUÇÃO DE ALVENARIA DE BLOCO DE CONCRETO
Autor: realizaconstruções e formação de mão de obra | Publicado: 2012-06-09T14:17:00-07:00

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.
Construção de Alvenaria de Bloco de Concreto 


Estrutural
Tipo Calha 

Os blocos
calhas são blocos de concreto pré-moldados, fabricados da mesma forma que o
bloco estrutural. São utilizados como cinta de amarração (vigas) de fundações
ou paredes. 

Sobre uma
alvenaria de blocos estruturais assentam-se 2 (dois) blocos calhas nas
extremidades (cabeceiras), aprumados na mesma face que foi aprumado o bloco
estrutural com argamassa de cimento e areia no traço de 1:5. Fixa-se uma linha
entre os blocos, na parte de cima dos mesmos e completa-se a fiada
assentando-se os demais blocos calhas, colocando-se a argamassa da junta
horizontal em cima da fiada de bloco estrutural posicionando-os através da
operação de alinhamento ou seja encostado-os na linha. 

Detalhe
da Prumada do Nivelamento da Alvenaria de Bloco Calha 

Construída
a alvenaria de bloco calha, colocam-se as ferragens nas calhas, prepara-se um
concreto no traço 1:3,5:4 de cimento, areia e gravilhão (brita 0) e lança-o
sobre a calha. Espalhase o concreto com a colher de pedreiro e vibra (soca) o
mesmo com uma haste de ferro ou com a ponta da colher de pedreiro até a altura
do bloco.