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D1.F.2.1 Section Types Supported for ACI 318-99 – ACI 318-11

Design using ACI 318-11, ACI 318-08, ACI 318-05, ACI 318-02, or ACI 318-99 in STAAD.Pro supports the design of beams, columns, or slabs defined as follows.

Section types for concrete design

Beam Design – uses a 2D beam element if specified with the following properties:
  1. Rectangular
    1. Defined as a Prismatic section with YD (depth) and ZD (width)
    2. Defined in a User Table, type: prismatic
  2. Tee Section
    1. Defined as a Prismatic section with YD (overall depth), YB (depth of stem), ZD (width of flange), and ZB (width of stem)
  3. Trapezoidal
    1. Defined as Prismatic section with YD (depth), ZD (width at top), and ZB (width at bottom).
Column Design – uses a 2D beam element if specified with the following properties:
  1. Rectangular
    1. Defined as a Prismatic section with YD (depth) and ZD (width)
    2. Defined in a User Table, type: prismatic
  2. Circular
    1. Defined as Prismatic section with YD (circumference)
Floor Slab Design - uses a 2D plate element
  1. 3-noded plate with thickness of element is equal to the thickness of the slab
  2. 4-noded plate with thickness of element is equal to the thickness of the slab. All four nodes should be co-planar.