RR-F-191/3E
4.3 Examination. Examine posts, top rails, and braces for defects listed in table VIII.
TABLE VIII. Classification of defects, posts, rails, and braces.
Defects Major Minor
Class, size, and grade not as specified. |
x |
|
Materials not as specified. |
x |
|
Dimensions and weights not within tolerance. |
x |
|
Color not as specified. |
x |
|
Weight of zinc coating not as specified. |
x |
|
Coating cut, scratched, or abraded exposing bare metal. |
x |
|
Damage or defects affecting function or serviceability. |
x |
|
Damage or defects not affecting function or serviceability. |
x |
4.4 Test methods.
4.4.1 Yield strength. Prepared a specimen obtained from the material and determine yield strength in accordance with ASTM E 8 (see 3.4.6).
4.4.2 Zinc-coat on steel posts, top rails, and braces. Determine weight of zinc in accordance with
ASTM A 90 (see 3.1).
5. PREPARATION FOR DELIVERY (see RR-F-191/GEN)
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)
6.1 Ordering data. Purchasers should select the preferred options permitted herein and include the following information in acquisition documents:
a. Title, number, and date of this specification. b. Class, size, and grade required (see 1.2).
c. When weight of zinc coating is to be other than specified (see 3.1). d. Color coating required and color required (see 3.2).
e. When color coating material is other than specified and material required (see 3.2). f. When grade B coatings are other than specified (see 3.4.1).
g. When posts are other than specified (see 3.5).
h. When length of posts is specified and length required (see 3.5). i. Class, grade and size of top rails specified (see 3.6).
j. Class, grade and size of braces specified (see 3.6).
6.2 Changes from previous issue. The margins of this specification are marked with vertical lines to indicate where changes from the previous issue were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous issue.
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