name = "steve/hollow-section"
version = "1.1.0"
runtime = "steve"
license = "MIT"
summary = "Square and rectangular hollow sections (structural tube), EN 10219-2, any size, wall and length."
description = """Cold-formed square or rectangular hollow section to EN 10219-2: outside width B along X, height H \
along Y, wall thickness T, centred on the origin and extruded along +Z by the length.

Corner radii are those EN 10219-2 uses for the sectional properties of its tables (outside / inside: 2T / T up to \
6 mm wall, 2.5T / 1.5T up to 10 mm, 3T / 2T above), so mass and section area match the tables. Presets: catalogue \
sizes, 1000 mm long. Also sharp-cornered light tubes (corners = "sharp"): the catalogue's generic square and \
rectangular tubes, measured from step.parts' published models (MIT)."""
changes = "Sharp corners (corners = sharp) and an unspecified material added for the generic light tubes 10x10x1 to 60x30x2.4, measured from step.parts' models (MIT); EN 10219 presets unchanged."
tags = ["stock", "tube", "hollow-section", "shs", "rhs", "en-10219", "structural", "metric"]

[parameters.width]
type = "number"
default = 40
min = 10
max = 600
unit = "mm"
label = "Width B"

[parameters.height]
type = "number"
default = 40
min = 10
max = 600
unit = "mm"
label = "Height H"

[parameters.wall]
type = "number"
default = 3
min = 0.5
max = 40
unit = "mm"
label = "Wall thickness T"
description = "Must leave an opening: 2 x wall < width and height."

[parameters.length]
type = "number"
default = 1000
min = 1
max = 12000
unit = "mm"
label = "Length"

[parameters.material]
type = "choice"
default = "steel-s355"
choices = ["steel-s355", "steel-s235", "stainless-304", "unspecified"]
label = "Material"
description = "S355J2H or S235JRH structural steel (EN 10219-1), 1.4301 stainless, or unspecified (no material assigned)."

[parameters.corners]
type = "choice"
default = "en-10219"
choices = ["en-10219", "sharp"]
label = "Corners"
description = "en-10219: the corner radii EN 10219-2 uses for its tables; sharp: square corners (the generic light tubes)."