Bar Bending Schedule (BBS)

A Bar Bending Schedule (BBS) is a detailed list that provides the specific lengths, shapes, and quantities of reinforcement bars (rebar) used in reinforced concrete construction. It is an essential document for contractors, engineers, and construction teams to ensure that the right materials are available, properly cut, and bent according to design specifications.

  • A typical Bar Bending Schedule includes the following information:
  • Bar Mark: A unique identifier for each type of bar in the project.
  • Bar Diameter: The diameter of the rebar (e.g., 10mm, 12mm, 16mm).
  • Bar Shape/Type: This indicates the shape of the bar, such as straight, bent, or cranked, which is often represented by a standard symbol.
  • Length of Bar: The length of each rebar required for the structure.
  • Quantity: The number of bars needed.
  • Cutting Length: The length of the bar before any bending is done, including allowances for bending.
  • Bending Details: The angle and shape the bar needs to be bent into.
  • Position/Location: Specific location in the structure where the rebar is to be placed (e.g., beam, slab, column).
  • The schedule is crucial for:
  • Ordering and purchasing materials.
  • Fabrication of the bars.
  • Accurate cutting and bending of the bars before construction.
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