Flexural Reinforcement Detailing (BRD)

International Design Codes

ACI 318-19 : Flexural Reinforcement (BRD) per ACI 318-19 with ideCAD

TSC 2018 : Longitudinal Reinforcement Detailing for Beams.

Notation in ACI 318-19

b_w = web width or diameter of circular section, in.
d = distance from extreme compression fiber to centroid of longitudinal tension reinforcement, in.
d_b = nominal diameter of bar, wire, or prestressing strand, in
f_y = specified yield strength of nonprestressed reinforcement, psi
f_yt = specified yield strength of transverse reinforcement, psi
h = overall thickness, height, or depth of member, in.
l_a = additional embedment length beyond centerline of support or point of inflection, 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.
M_n = nominal flexural strength at section, in.-lb
s = center-to-center spacing of items, such as longitudinal reinforcement, transverse reinforcement, tendons, or anchors, in.
V_n = nominal shear strength, lb
V_u = factored shear force at section, lb
β_b = ratio of area of reinfocement cut off to total area of tension reinforcement at section.
ϕ = strength reduction factor