ASTM A/AM. Standard Specification for Zinc-Coated (Galvanized) Steel Bars for Concrete Reinforcement is exclusively applicable to hot-dip galvanizing . ASTM A/AM: Standard Specification for Zinc-Coated (Galvanized) Steel Bars for Concrete Reinforcement. ASTM A/AMa Testing Mechanical Splices for Steel Reinforcing Bars .. ASTM A/AM Zinc-Coated (Galvanized) Steel Bars for Concrete.
|Country:||Bosnia & Herzegovina|
|Published (Last):||28 June 2007|
|PDF File Size:||5.22 Mb|
|ePub File Size:||12.72 Mb|
|Price:||Free* [*Free Regsitration Required]|
Number 12 and smaller bar must have a minimum of 3.
ASTM A – Galvanizing Steel Bars | American Galvanizer’s Association
This specification covers steel reinforcing bars with protective zinc coatings applied by dipping the properly prepared reinforcing bars into a molten bath of zinc. The material provided herein has been developed to provide accurate and authoritative information about after-fabrication hot-dip galvanized steel.
Specification for Structural Steel. The LCC analysis considers not only the initial cost of the system but also the future costs maintenance, replacement, etc. First, the specification details the coating thickness requirements based on bar size. This post-treatment helps to prevent the formation of wet storage stain on the bars when they are in bundles at a job site and also promotes good adhesion of the galvanized rebar to the concrete it is placed in.
Requirements concerning the renovation of uncoated areas after initial asfm galvanizing are contained within the material specifications A, A, A This specification covers a7767 steel structural shapes for use in building framing or bridges, or for general structural purposes. The galvanizer shall be permitted to subject the newly coated steel reinforcing bars to air or steam wiping to remove excess zinc from the bars.
A requires a continuous, smooth, and uniform finish with no uncoated areas including on the threads or issues that interfere with its intended use. This specification covers carbon structural steel shapes, plates, and bars of structural quality for atsm in riveted, bolted, or welded construction of bridges and buildings, a77 for general structural purposes.
ASTM Specifications | American Galvanizer’s Association
Practice for Astn of Damaged and Uncoated Areas of HOt-Dip Galvanized Coatings covers appropriate methods used to repair damaged hot-dip galvanized coatings on hardware, structural shapes, and other hot-dip galvanized products, including uncoated areas remaining after initial hot-dip galvanizing.
The adherence requirement is the same as A, for strong bond throughout the life of the hot-dip galvanized steel.
Standard Specification for Zinc Hot-Dip Galvanized Coatings on Iron and Steel Products covers individual steel pieces as well as assemblies of various classes of material. This cold working of the bars causes induced stresses that may be released after the bars are immersed in the molten F zinc bath.
The purpose of the calculation is to provide justification for the purchase of a higher initial cost system with a low life-cycle cost over an initially less expensive coating which has high future costs. Purchase a copy from the AGA, or contact your local galvanizer. This tubing shall be produced in both welded and seamless sizes and must have the chemical requirements of carbon, manganese, phosphorus, sulfur, and copper.
Assemblies should consist of elements of similar chemistry and surface condition. The requirements in the specification facilitate the production of a high-quality zinc coating and are similar to those found in A and A January 25, Authored by Dr.
Are you still looking for the right answer?
ASTM A767 – Galvanizing Steel Bars for Concrete Reinforcement – Rebar
Historical Version s – view previous versions of standard Work Item s – proposed revisions of this standard Translated Version s: It is the responsibility of the designer and fabricator to ensure the product has been properly designed and built before the hot-dip galvanizing process supporting specifications. There are coating thickness minimums, but no maximums, and the threads are not subject to the zstm thickness requirement.
The requirements for finish, appearance, and adherence are identical to those in the other main standards. Common distorted and warped members of assemblies are sheets or plates assembled by welding or riveting. Work Item s – proposed revisions of this standard.
ASTM A767/A767M – 16
This specification covers zinc metal made from ore or other material by a process of distillation or by electrolysis in five grades as follows: The mass of the coating shall be determined by magnetic thickness gage measurements. Stripping method, a7667 before and after galvanizing, and microscopy method shall be used to referee the results obtained by magnetic w767 measurements.
KnowledgeBase What is EN ? Any combination of these products can be assembled into a single fabrication and then hot-dip galvanized.
The information provided herein is not intended as a representation or a776 on the part of the AGA. These notes and footnotes excluding those in tables shall not be considered as requirements of the specification. This specification covers the chemical, mechanical, and dimensional requirements for eight grades Grades O, A, B, C, D, DH, C3, and DH3 of carbon and alloy steel nuts for general structural and mechanical uses on bolts, studs, and other externally threaded parts.
The values stated in each system may not be exact equivalents. However, the AGA does provide a compilation of specifications pertinent to galvanizing. The design of the product and selection of proper steel for its suitability to withstand normal galvanizing operations is the responsibility of the designer and fabricator.
Was this answer helpful?