Quantcast Structural Steel Paint Recoating

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All weld metal and base metal subjected to cyclic tension shall be supplied with "charpy" V-
notch testing in accordance with ASTM A6 supplementary requirement SS. (5 specimen
option). The impact test shall meet a minimum average value of 20 ft. lbs. absorbed
energy @ -20 degrees F.
Crane Certifications:
The design, construction and installation of cranes is normally contracted for on a design-
build basis, regardless of the type procurement used for the major construction contract.
NAVFAC specifications (sections 14534, 14535, 14606, 14622, 14636 or 14637)
provide instruction for design of cranes and monorails.
a. Mil-Hdbk 1038 (Weight Handling Equipment) provides design criteria for cranes.
The Navy requires annual inspections and certifications based on the requirements
of NAVFAC P-307 (Management of Weight Handling Equipment) as part of their
safety certification program. The P-307 requirements include static and dynamic
load tests and generally exceed similar commercial certification requirements. The
Navy certification requirement shall not be inserted into the crane design
specification as the contractor is not responsible for procuring this inspection.
Instead, all post-erection inspections and tests contained in the crane specifications
that require contractor inspection and testing shall remain in the specification.
These requirements are equivalent to a commercial certification. A provision that
the contractor provide all weights for these load tests shall be added to the
standard specification language.
b. The designer of record is responsible for the design of all crane / monorail
supporting members except patened track beam for underrunning cranes and
monorails which will be designed by the crane contractor.
Removal of existing steel coatings to permit application of new coatings shall not be
attempted except where paint adhesion tests indicate that existing coatings do not have
sufficient adhesion to allow overcoating with an encapsulating coating.
a. Adhesion tests for existing steel coatings shall be in accord with ASTM D 3359
(method A).
b. Where removal of relatively small areas of existing steel coatings are
necessary, SSPC SP11 (Power Tool Cleaning to Bare Metal) should be preferred
over blast cleaning.
c. All federal, state and local environmental requirements must be adhered to in the
removal and disposal of existing steel coatings. Reference section 3-19 of the A-E
Guide for general removal requirements.


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