El ancho de un cabezal para la abertura en bruto de una puerta o ventana generalmente es igual al ancho de la ______.
a. abertura en bruto menos
el ancho de los puntales
de contorno
b. abertura en bruto más el
ancho de los puntales de
contorno y las puntas
principales
c. abertura en bruto más el
ancho de los puntales de
contorno
d. puerta o ventana
Answer: C
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