Round HSS Shapes

struct RoundHSS_Shape <: AbstractHSS_Shapes

RoundHSS_Shape in the AISC steel database.

Fields

• shape: name of the HSS
• weight: weight of section (plf)
• A_g: area of shape (inch2)
• OD: outside diameter of round HSS or pipe (inch)
• t_nom: nominal thickness of HSS and pipe wall (inch)
• t_des: design thickness of HSS and pipe wall (inch)
• I_x: Moment of inertia about the x-axis (inch4)
• Z_x: Plastic section modulus about the x-axis (inch3)
• S_x: Elastic section modulus about the x-axis (inch3)
• r_x: Radius of gyration about the x-axis (inch)
• I_y: Moment of inertia about the y-axis (inch4)
• Z_y: Plastic section modulus about the y-axis (inch3)
• S_y: Elastic section modulus about the y-axis (inch3)
• r_y: Radius of gyration about the y-axis (inch)
• J: Torsional constant (inch4)
• C: HSS torsional constant (inch3)
• E: Elastic section modulus (ksi) = 29000ksi
• F_y: Yield strength(ksi) = 50ksi

RoundHSS_Shape(shape; E=29000ksi, F_y=50ksi, C_b=1)

Constructor for RoundHSS_Shape.

module Compression

This module includes useful functions to calculate compression capacity of round hss-shape sections (RoundHSS_Shape).

Functions

• classify_wall - classify wall for slenderness
• calc_Pn - Compressive capacity of the shape

calc_Pn(shape::T, L_cx, L_cy) where T <: AISCSteel.Shapes.RoundHSS_Shapes.AbstractRoundHSS_Shapes
calc_Pn(shape::T, L_cx, L_cy, λ_b, λ_rb, λ_bclass, λ_h, λ_rh, λ_hclass) where T <: AISCSteel.Shapes.RoundHSS_Shapes.AbstractRoundHSS_Shapes

This function calculates Pn of the shape.

Arguments

• shape: rolled hss-shape section (RoundHSS_Shape)
• L_cx: effective length of member for buckling about the x-axis (inch)
• L_cy: effective length of member for buckling about the y-axis (inch)
• λ: slenderness ratio of the wall
• λ_r: nonslender slenderness ratio limit of the wall
• λ_class: nonslender or slender classification for the wall

Returns

• P_n: nominal compressive strength of the section (kip)

Reference

• AISC Section E3, E7

classify_wall(shape::T) where T <: AISCSteel.Shapes.RoundHSS_Shapes.AbstractRoundHSS_Shapes

This function classifies wall for compression for the shape.

Arguments

• shape: rolled hss-shape section (RoundHSS_Shape)

Returns

(λ_f, λ_rf, λ_fclass)

• λ_f: slenderness ratio of the wall
• λ_rf: nonslender slenderness ratio limit of the wall
• λ_fclass: nonslender or slender classification for the wall

module Flexure

This module includes useful functions to calculate bending capacity of rolled HSS sections (HSS_Shape).

Functions

• classify_round_hss - classify round hss for slenderness
• calc_Mn - moment capacity

calc_Mn(shape::T) where T <: AISCSteel.Shapes.RoundHSS_Shapes.AbstractRoundHSS_Shapes
calc_Mn(shape::T, λ_class) where T <: AISCSteel.Shapes.RoundHSS_Shapes.AbstractRoundHSS_Shapes

This function calculates Mnx of the shape.

Arguments

• shape: HSS section (HSS_Shape)
• λ_class: compact noncompact or slender classification for the round hss

Returns

• M_n: nominal moment of the section (kip-ft)

Reference

• AISC Section F8

classify_round_hss(shape::T) where T <: AISCSteel.Shapes.HSS_Shapes.AbstractHSS_Shapes

This function classifies flange for flexure for the shape.

Arguments

• shape: rolled HSS sections (HSS_Shape)

Returns

(λ_f, λ_pf, λ_rf, λ_fclass)

• λ_f: slenderness ratio of the round hss
• λ_pf: compact slenderness ratio limit of the round hss
• λ_rf: noncompact slenderness ratio limit of the round hss
• λ_fclass: compact noncompact or slender classification for the round hss