ASTM A Standard Specification for Zinc-Coated Parallel and Helical Steel Wire Structural Strand. Normativa ASTM A – Download as PDF File .pdf), Text File .txt) or read online. ASTM Aa() Standard Specification for Zinc-Coated Parallel and Helical Steel Wire Structural Strand Scope.
|Published (Last):||13 August 2017|
|PDF File Size:||10.71 Mb|
|ePub File Size:||16.19 Mb|
|Price:||Free* [*Free Regsitration Required]|
Maintain this load while a in. Any test, however, which fails due to faulty attaching of the sockets shall be disregarded.
It only implies that the wire sizes chosen by the strand manufacturer must meet the requirements of this specication. Work Item s – proposed revisions of this standard. A number in parentheses indicates the year of last reapproval.
NOTE 1—A typical ordering description is as follows: Breaking strength is expressed as Grade 1 or 2, while, coating weight is expressed as Class A, B, or C. This specification covers zinc-coated parallel and helical steel wire structural strands for use where a high-strength, high-modulus, multiple-wire tension member is desired as a component part of a structure. When specied, inspection may be waived, and certied copies of test reports furnished.
Then increase the load uniformly until the extensometer indicates an extension of 0. If either additional sample fails the retest for breaking strength, the manufactured length in question shall be rejected.
Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
Sampling and Testing 9. Please contact your WW regional sales manager or customer service representative for further satm.
Determine the load at 0. Find a state or province to view Wirerope Works, Inc. If it fails to meet the minimum breaking strength requirement, asfm has not broken in the cone or grips, two additional samples shall be cut from the same manufactured length and tested.
Continue the application of load until fracture occurs. The stress corresponding to this load shall meet the requirements for the astmm of 0. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. Specimens shall be tested and conform to values of the following physical requirements: Using SS also offers these advantages:.
Referenced Documents purchase separately The documents listed below asstm referenced within the subject standard but are not provided as part of the standard.
The stress corresponding to this load shall meet the requirements for stress at 0. Using SS also offers these advantages: Record the load for this extension.
It can be furnished with Class B weight or Class C weight zinc-coated outer wires where additional corrosion protection is required. Historical Version s – view asstm versions of standard. The coating shall be continuous and reasonably uniform. A superscript epsilon e indicates an editorial change since the last revision or reapproval. Product description Prestretching Striping Proofloading Pin orientation Certification Special features Length tolerances Galvanized coating Modulus of elasticity Length and point of measurement Measuring at required load End terminations dimensions, pin sizes, jaw openings Nondestructive test method.
The manufacturer shall afford the astn representing the purchaser all reasonable facilities to satisfy him that the material is being furnished in accordance with this specication. Bethlehem Structural Strand is an arrangement of wires laid helically around a center wire to produce a adtm cross section. Maintain this load and attach the extensometer. For users who opt to use SS without downsizing the diameter of the strand, other benefits apply.
Smaller Fittings—Many fittings manufactured for standard strand may be used with the SS, thereby offering a lower cost per unit and adding further cost reductions. Apply a load corresponding to the tensile stress indicated in Table 5, using the nominal diameter of the specimen. WW is also ISO certified. In this case the prestretching provision of qstm test sample of 5.
Structural wire rope provides greater flexibility when compared with coarse strand constructions and is generally the structural cable of choice where bending ability is an important requirement, such as forming flemish eye ends drop terminals.
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every ve years and if not revised, either reapproved or withdrawn. This abstract is a brief summary of the referenced standard. Reduced Structural Strand Diameter—Now that designers can utilize a smaller diameter strand for the guying system, SS offers a lower cost per foot, allowing the user to cut valuable dollars from the cost of a project.
Originally published as A — Splicing of the inner wires during the stranding operation is permissible.
Test for Coating Weight 6. Link to Active This link will always route to the current Active version of the standard. Two separate instruments are advisable since the more sensitive stress aetm 0. Then increase the load uniformly until the extension recorded by the extensometer is at least 0.
ASTM B r In addition, WW can obtain material certification from end termination vendors. Record the elongation attained from the elongation extensometer and add to it 0.
In doing so, we are able to test and certify the following: Loosening or detachment during the adherence test of supercial small particles of zinc formed by mechanical polishing of the surface of zinc-coated wire shall not be considered cause for rejection. The hand straightening necessary to permit insertion of the specimen in the jaws of the testing machine shall be performed by drawing between wood blocks or by some other equally satisfactory means.
The American Society for Testing and Materials takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. The strand is available with parallel or helical wire construction.