astm a706 grade 80 reinforcement

STRUCTURE magazine New Trends in Reinforcing Steel

STRUCTURE magazine New Trends in Reinforcing Steel

  • Material PropertiesLimitations and RequirementsBenefits and LimitationsThe Future of HSRBReferencesThe design of any reinforced concrete member must satisfy the fundamental requirements for strength and serviceability as prescribed in ACI 318. With respect to reinforcing bars, the basic mechanical properties that are important in achieving safe and serviceable designs are:1. Yield strength, fy 2. Tensile-to-yield strength ratio, fu/fy 3. Strain (elongation) at tensile strength 4. Length of yield plateau Depicted in Figure 1are typical tensile stress-strain curves for ASTM A615 reinforcing bars of Grades 6High-Strength Reinforcing Bars Technical Note• The 2009 editions of ASTM A615 and ASTM A706 were the first to include requirements for Grade 80 reinforcing bars, which were adopted into the 2011 edition of ACI 318. Tables 20.2.2.4a and 20.2.2.4b of the 2014 edition of ACI 318 (ACI 2014) contain the latest requirements and limitations for nonprestressed deformed reinforcementsp.info Reinforcing bar specificationsA706-80 #3-#11 & #14, #18 Yes** W Low-Alloy Steel * Grades 40 and 50 do not have grade marks required. All Grade 60 Bars must have either grade mark line or number “60” rolled into bar surface. ** There are no exceptions to A706 per se. The bend test requirements in A706 are even more restrictive than the ACI exceptions. A706 also contains a supple-sp.info A706 Grade 80 Reinforcement for Seismic ApplicationsA706 Grade 80 Reinforcement for Seismic Applications In the seismic design of reinforced concrete structures, the overstrength of the steel reinforcement plays a critical role in the structure’s ability to dissipate energy inelastically as unaccounted for strength sp.info DEPARTMENT OF TRANSPORTATION TECHNICAL

    
			re-bar welding

    re-bar welding

    Oct 30, 2008 · ASTM A706 is the standard for reinforcement bars for applications requiring controlled tensile properties and applications requiring enhanced weldability. It is only available in Grade 60 (min. yield strength of 60 ksi) and the min. tensile strength is 80 ksi.sp.info STRUCTURE magazine Welding Reinforcing Steel:AWS D1.4 Standard specifications for low-alloy steel ASTM A706 limit chemical composition and CE to enhance weldability. However, it is permissible to weld other base metals, such as ASTM A615, which is commonly used in reinforced concrete, as long as the appropriate weld procedure specification (WPS) is followed and correct filler weld metal is used.sp.info ASTM A706 Grade 80 Rebar Products & Suppliers Reinforcing Steel shall be either ASTM A615 Grade 60 or A706.. A706 reinforcing steel shall be used at locations where rebar welding is anticipated.. 78 80 but not less than 1.25 ~. sp.info TALL BUILDING CONCRETE SHEAR WALL DESIGN USING Reinforcing within the shear walls is a mixture of ASTM A706 Grade 60 and Grade 80 reinforcing. Confinement ties are 80 ksi while shear reinforcing is 60 ksi. Both Grade 60 and Grade 80 are used for longitudinal reinforcing with the configuration depending upon the most economical layout. Grade 80

    
			Rebar Commercial Metals Company

    Rebar Commercial Metals Company

    grades . astm a615-40 astm a615-60 astm a615-75 astm a615-80 astm a615-100 astm a706-60 astm a706-80 astm a706-60/a615-60 (dual) spooled rebar grades astm a615-40sp.info Defining Yield Strength for Nonprestressed Reinforcing Grades 60 and 80 (420 and 550) were selected for study based on the reasoning that these grades are manufactured under both ASTM A615 and ASTM A706, that Grade 60 (420) is the most commonly specified reinforcing steel, and that Grade 80 (550) represents sp.info Weldable rebar - American Welding SocietyOct 28, 2007 · A couple points of interest regarding A706:The carbon equivalent is controlled so as to not exceed 0.55%, so under normal conditions, no preheat is required for commonly used bar sizes (up to #6). Typically, embedded attachments are designed so that they must develop the full tensile capacity of the rebar, so, a minimum weld is required.sp.info High Strength Reinforcing Steel Bars:Concrete Shear High-strength steel (HSS) reinforcement, specifically ASTM A706 Grade 80 (550), is now permitted by the AASHTO LRFD Bridge Design Specifications for use in reinforced concrete bridge components in non-seismic regions. Using Grade 80 (550) steel reinforcement instead of Grade 60 (420) steel reduces material and construction costs.

    
			ASTM A706/A706M—09b Standard Specification for Low

    ASTM A706/A706M—09b Standard Specification for Low

    1.2 Grade — Bars are of two minimum yield strength levels:namely, 60 000 psi [420 MPa] and 80 000 [550], designated as Grade 60 [420] and Grade 80 [550], respectively. Note 1—Bars designated as Grade 80 [550], which were introduced in the A706/A706M – 09a revision, may be outside consideration of consensus design codes and specifications.sp.info Advances in High-Strength Reinforcing Bar Research in Grade 80 HSRB 1. Large variability in performance of grade 80 bars 1. Some samples performed much better than grade 60 2. Others much worse (~50% of cycles to failure of grade 60) 3. Specifically A706 bars performed much worse 2. Few tests on grade 80 bars in this first study Summary of Findingssp.info A615 Rebar - ASTM A615 Grade Reinforcing Bar Harris ASTM A615 Rebar. ASTM A615 rebar is most commonly used in low-stress and less-demanding applications and makes an economical choice in situations where a tremendous level of tensile strength is not necessarily needed. Its strength and performance characteristics are grade-dependent, and A615 rebar is available in a full range of standard sizes sp.info DEFINING YIELD STRENGTH FOR NONPRESTRESSED From this group, Grades 60 and 80 (420 and 550) were selected for study based on the reasoning that these grades are manufactured under both ASTM A615 and ASTM A706, that Grade 60 (420) is the most commonly specified reinforcing steel, and that Grade 80 (550) represents the upper limit of specified yield strength permitted by ACI

    
			ASTM A706/A706M-16 - Standard Specification for

    ASTM A706/A706M-16 - Standard Specification for

    ASTM A706/A706M-16 Standard Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete Reinforcement. 1.1 60 000 psi [420 MPa] and 80 000 psi [550 MPa], designated as Grade 60 [420] and Grade 80 [550], respectively. 1.3 Plain bars, sp.info