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sieved O
. O
Also O
the O
compaction B-Process
process I-Process
was O
not O
properly O
implemented O
in O
general O
in O
the O
installment B-Process
of I-Process
concrete I-Process
in O
RC O
buildings O
. O
This O
situation O
resulted O
in O
the O
concrete O
to O
exhibit O
an O
excessively O
porous O
structure O
. O
The O
most O
fundamental O
rules O
of O
thumb O
of O
construction O
, O
namely O
concrete B-Material
cover I-Material
, O
was O
not O
taken O
care O
of O
in O
formwork O
workmanship O
. O
Faults B-Process
in I-Process
the I-Process
connections I-Process
of I-Process
stirrups I-Process
to O
the O
longitudinal O
bars O
, O
unstaggered B-Process
formation I-Process
of I-Process
stirrup I-Process
hooks B-Material
in O
beams B-Material
and O
columns B-Material
, O
the O
perpendicular B-Process
angles I-Process
of O
the O
hooks B-Material
, O
inadequately B-Process
anchorage I-Process
lengths I-Process
of O
the O
stirrup B-Material
hooks I-Material
and O
longitudinal B-Material
bars I-Material
, O
and O
the O
use B-Process
of I-Process
cold I-Process