Beam design
to AS3600-2018(+A2) Section 8

Beam width

Beam depth

Top reo

Bottom reo

Edge bars

Ties

Cover

Effective depth

Axis depth

Area tensile steel

Area compression steel

Concrete strength, f'_c

Concrete ult. strain, ε_cu

α₂

γ

Steel strength, f_sy

Steel modulus, E_s

Steel ult. strain, ε_su

Fitment steel strength, f_sy.f MPa

Applied moment, M*

Applied shear, V*

Applied torsion, T*

Neutral axis parameter, k_u

Plastic neutral axis, d_n

Moment capacity, M_uo

Capacity reduction factor, Φ Table 2.2.2

Design moment capacity, ΦM_uo

Moment check, M*/ΦM_uo

Section modulus, Z

Concrete flex.ten. strength, f'_ct.f Section 3.1.1.3

Minimum bending strength, M_uo,min Equation 8.1.6.1(1)

Min strength check, M_uo,min/M_uo

Shear reo legs , angle α_v

Effective web width, b_v mm Section 8.2.1.5

Effective shear depth, d_v mm Section 8.2.1.9

Transverse reo, A_sv

Min transv. reo, A_sv.min Equation 8.2.1.7

Min transv. reo required?

Nominal max agg. size, d_g mm Section 8.2.4.2.1

Aggregate size factor, k_dg Equation 8.2.4.2(3)

Longitudinal strain, ε_x Section 8.2.4.2.2

Inclination of compr. strut, θ_v Equation 8.2.4.2(1)

Shear factor, k_v Equation 8.2.4.2.1

Shear capacity (concrete), V_uc Equation 8.2.4.1

Shear capacity (steel), V_us Equation 8.2.5.2(2)

Capacity reduction factor, Φ Table 2.2.2

Web crushing, ΦV_u.max Equation 8.2.3.3(1)

Shear capacity, ΦVu Section 8.2.3.1

Shear check, V*/ΦV_u

Web crushing check

Area of cross section, A_cp

Perimeter of cross section, u_c

Perimeter of ties, u_h m

Torsion cracking moment, T_cr Equation 8.2.1.2(2)

Torsion considered if min ties, T*>0.25ΦT_cr

Area enclosed by ties, A_oh m²

Area in shear flow path, A_o

Torsion capacity, ΦT_us Equation 8.2.5.6

Torsion check, T*/ΦT_us