Inspection/Quality
Control
Inspecting the hot-dip galvanized coating
for conformance to specification is an
uncomplicated task. The simplicity of the
process yields complete coating coverage and
consistent coating thickness. The two most important components
to an inspection are a simple visual
inspection to ensure coating coverage and a
brief series of coating thickness measurements
to assure conformance to the appropriate
specifications.
The specification for hot dip galvanizing
of steel reinforcing bars is handled in
different ways around the world. Some
countries treat steel reinforcing bars in
the same way as any other steel product, and
the hot dip galvanizing of rebar falls under
a general galvanizing standard (see table
below). Several other countries have
developed product specific standards for the
hot dip galvanizing of steel reinforcing
bars. These are also listed below:
| |
Designation |
Title of
Standard |
|
Galvanizing
Standards |
| Australia/New
Zealand |
AS/NZS 4680 |
Hot-dip galvanizing
(zinc) coatings on fabricated
ferrous articles |
| Canada |
CAN/CSA G164 |
Hot dip galvanizing
of irregularly shaped articles |
| South Africa |
SABS/ISO 1461 |
Hot dip galvanized
coatings on fabricated iron and
steel articles |
| Europe |
EN ISO 1461 |
Hot dip galvanized
coatings on fabricated iron and
steel articles |
| International
Standards Organization |
ISO 1461 |
Hot dip galvanized
coatings on fabricated iron and
steel articles |
|
Reinforcing
Steel Standards |
| United States |
ASTM A 767 |
Zinc-coated
(galvanized) steel bars for concrete
reinforcement |
| France |
NF A35-025 |
Hot dip galvanized
bars and coils for reinforced
concrete |
| Italy |
UNI 10622 |
Zinc-coated
(galvanized) steel bars and wire
rods for concrete reinforcement |
| India |
IS 12594 |
Hot-dip coatings on
structural steel bars for concrete
reinforcement specifications |
| International
Standards Organization |
ISO 14657 |
Zinc-coated steel
for the reinforcement of concrete |
| Europe |
prEN EC019023 |
Steel for
reinforcement - Galvanized
reinforcing steel |
|
Reinforcing
Steel Specifications |
| Germany |
Z-1.4-165 |
Allgemeine
Bauaufsichtliche Zulassung -
Feuerverzinkte Betonstahle
General approval by the building
authorities - Galvanized reinforcing
steel |
Further guidance and support in creating
a hot dip galvanized rebar specification is
available from regional galvanizing
associations, as listed on the
regional
listings page.
