• Transverse reinforcement detailing is applied automatically in accordance with Codes.

  • Transverse reinforcement detailing is applied according to Codes in earthquake resistant structure columns.

International Design Codes

ACI 318-19 : Transverse Reinforcement (CRD)

TSC 2018 : Transverse Reinforcement Detailing for Columns

Notation in ACI 318-19

Ag = gross area of concrete section, in.2 For a hollow section, Ag is the area of the concrete only and does not include the area of the void(s)
Ab = area of an individual bar or wire, in.2
bw = width of compression face of member, in.
d = distance from extreme compression fiber to centroid of longitudinal tension reinforcement, in.
dagg = Nominal maximum size of coarse aggregate, in.
db = nominal diameter of bar, wire, or prestressing strand, in
fc' = specified compressive strength of concrete, psi
fy = specified yield strength of nonprestressed reinforcement, psi
h = overall thickness, height, or depth of member, in.
hx = maximum center-to-center spacing of longitudinal bars laterally supported by corners of crossties or hoop legs around the perimeter of a column or wall boundary element, in.
ld = development length in tension of deformed bar, deformed wire, plain and deformed welded wire reinforcement, or pretensioned strand, in.
lo = length, measured from joint face along axis of member, over which special transverse reinforcement must be provided, in.
lu = unsupported length of column or wall, in.
Pu = factored axial force; to be taken as positive for compression and negative for tension, lb
s = center-to-center spacing of items, such as longitudinal reinforcement, transverse reinforcement, tendons, or anchors, in.

so = center-to-center spacing of transverse reinforcement within the length lo, in.

The spacing of transverse reinforcement is is determined automatically to meet the most restrictive requirements. uding earthquake effects is less than Agfc′/10.