Longitudinal Reinforcement Detailing.

International Design Codes

ACI 318-19 : Longitudinal Reinforcement (CRD) per ACI 318-19 with ideCAD

TSC 2018 : Longitudinal Reinforcement Detailing for Columns

Notation

A_b = area of an individual bar or wire, in.²
f_y = specified yield strength of nonprestressed reinforcement, psi
h = overall thickness, height, or depth of member, in.
l_d = development length in tension of deformed bar, deformed wire, plain and deformed welded wire reinforcement, or pretensioned strand, in.
l_u = unsupported length of column or wall, in.
s = center-to-center spacing of items, such as longitudinal reinforcement, transverse reinforcement, tendons, or anchors, in.