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#11 Rebar

#11 rebar is among the widest and heaviest of the available standard grades, and is thus well-suited for use in heavy-duty and demanding construction projects.
Rebar is primarily used to reinforce concrete, a task it is well suited for since concrete and steel have similar heat expansion coefficients. Steel rebar has superior tensile strength, decreasing concrete’s load-bearing stress. While smaller grades of rebar may be used in smaller-scale construction projects, #11 reinforcement bar is most frequently used in large, load-bearing structures like bridges, docks and large or tall buildings. Its metric or “soft size” equivalent is #36 rebar.

The physical characteristics of #3 rebar are as follows:
  • Weight per unit length: 5.313 pounds per foot
  • Nominal diameter: 1.41 inches
  • Nominal area: 1.56 square inches
  • Imperial Bar Size

    "Soft" Metric Size

    Weight per unit length (lb/ft)

    Mass per unit length (kg/m)

    Nominal Diameter (in)

    Nominal Diameter (mm)

    Nominal Area(in2)

    Nominal Area (mm2)









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