name = "steve/channel"
version = "1.0.0"
runtime = "steve"
license = "MIT"
summary = "Light C channel (U channel), constant thickness, square corners, any size and length."
description = """A light C (U) channel of constant thickness with square corners: web width, flange height, thickness \
and length free. Presets: the catalogue's generic channels 20 x 10 x 1.5, 30 x 15 x 1.5 and 40 x 20 x 2, measured from \
step.parts' published models (MIT); no standard covers them (DIN 1026 channels are tapered).

Web along X at the bottom, flanges up (+Y), centred on the origin, extruded along +Z."""
tags = ["stock", "channel", "c-channel", "u-channel", "profile", "metric"]

[parameters.width]
type = "number"
default = 30
min = 3
max = 1000
unit = "mm"
label = "Width (web)"

[parameters.height]
type = "number"
default = 15
min = 2
max = 1000
unit = "mm"
label = "Height (flanges)"

[parameters.thickness]
type = "number"
default = 1.5
min = 0.3
max = 50
unit = "mm"
label = "Thickness"
description = "Web and flanges; must leave an opening: 2 x thickness < width, thickness < height."

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

[parameters.material]
type = "choice"
default = "unspecified"
choices = ["unspecified", "aluminum", "steel", "stainless-304"]
label = "Material"
description = "unspecified (no material assigned), aluminium, steel or 1.4301 stainless."

[[presets]]
id = "C20x10x1.5-100"
title = "C channel 20 × 10 × 1.5, 100 mm"
params = { width = 20, height = 10, thickness = 1.5, length = 100 }
aliases = ["U channel 20x10x1.5 100 mm", "C channel 20x10 100 mm", "20x10 channel 100"]
standard = "step.parts generic channel model"

[[presets]]
id = "C20x10x1.5-150"
title = "C channel 20 × 10 × 1.5, 150 mm"
params = { width = 20, height = 10, thickness = 1.5, length = 150 }
aliases = ["U channel 20x10x1.5 150 mm", "C channel 20x10 150 mm", "20x10 channel 150"]
standard = "step.parts generic channel model"

[[presets]]
id = "C20x10x1.5-200"
title = "C channel 20 × 10 × 1.5, 200 mm"
params = { width = 20, height = 10, thickness = 1.5, length = 200 }
aliases = ["U channel 20x10x1.5 200 mm", "C channel 20x10 200 mm", "20x10 channel 200"]
standard = "step.parts generic channel model"

[[presets]]
id = "C20x10x1.5-250"
title = "C channel 20 × 10 × 1.5, 250 mm"
params = { width = 20, height = 10, thickness = 1.5, length = 250 }
aliases = ["U channel 20x10x1.5 250 mm", "C channel 20x10 250 mm", "20x10 channel 250"]
standard = "step.parts generic channel model"

[[presets]]
id = "C20x10x1.5-300"
title = "C channel 20 × 10 × 1.5, 300 mm"
params = { width = 20, height = 10, thickness = 1.5, length = 300 }
aliases = ["U channel 20x10x1.5 300 mm", "C channel 20x10 300 mm", "20x10 channel 300"]
standard = "step.parts generic channel model"

[[presets]]
id = "C20x10x1.5-400"
title = "C channel 20 × 10 × 1.5, 400 mm"
params = { width = 20, height = 10, thickness = 1.5, length = 400 }
aliases = ["U channel 20x10x1.5 400 mm", "C channel 20x10 400 mm", "20x10 channel 400"]
standard = "step.parts generic channel model"

[[presets]]
id = "C20x10x1.5-500"
title = "C channel 20 × 10 × 1.5, 500 mm"
params = { width = 20, height = 10, thickness = 1.5, length = 500 }
aliases = ["U channel 20x10x1.5 500 mm", "C channel 20x10 500 mm", "20x10 channel 500"]
standard = "step.parts generic channel model"

[[presets]]
id = "C20x10x1.5-600"
title = "C channel 20 × 10 × 1.5, 600 mm"
params = { width = 20, height = 10, thickness = 1.5, length = 600 }
aliases = ["U channel 20x10x1.5 600 mm", "C channel 20x10 600 mm", "20x10 channel 600"]
standard = "step.parts generic channel model"

[[presets]]
id = "C20x10x1.5-750"
title = "C channel 20 × 10 × 1.5, 750 mm"
params = { width = 20, height = 10, thickness = 1.5, length = 750 }
aliases = ["U channel 20x10x1.5 750 mm", "C channel 20x10 750 mm", "20x10 channel 750"]
standard = "step.parts generic channel model"

[[presets]]
id = "C20x10x1.5-1000"
title = "C channel 20 × 10 × 1.5, 1000 mm"
params = { width = 20, height = 10, thickness = 1.5, length = 1000 }
aliases = ["U channel 20x10x1.5 1000 mm", "C channel 20x10 1000 mm", "20x10 channel 1000"]
standard = "step.parts generic channel model"

[[presets]]
id = "C30x15x1.5-100"
title = "C channel 30 × 15 × 1.5, 100 mm"
params = { width = 30, height = 15, thickness = 1.5, length = 100 }
aliases = ["U channel 30x15x1.5 100 mm", "C channel 30x15 100 mm", "30x15 channel 100"]
standard = "step.parts generic channel model"

[[presets]]
id = "C30x15x1.5-150"
title = "C channel 30 × 15 × 1.5, 150 mm"
params = { width = 30, height = 15, thickness = 1.5, length = 150 }
aliases = ["U channel 30x15x1.5 150 mm", "C channel 30x15 150 mm", "30x15 channel 150"]
standard = "step.parts generic channel model"

[[presets]]
id = "C30x15x1.5-200"
title = "C channel 30 × 15 × 1.5, 200 mm"
params = { width = 30, height = 15, thickness = 1.5, length = 200 }
aliases = ["U channel 30x15x1.5 200 mm", "C channel 30x15 200 mm", "30x15 channel 200"]
standard = "step.parts generic channel model"

[[presets]]
id = "C30x15x1.5-250"
title = "C channel 30 × 15 × 1.5, 250 mm"
params = { width = 30, height = 15, thickness = 1.5, length = 250 }
aliases = ["U channel 30x15x1.5 250 mm", "C channel 30x15 250 mm", "30x15 channel 250"]
standard = "step.parts generic channel model"

[[presets]]
id = "C30x15x1.5-300"
title = "C channel 30 × 15 × 1.5, 300 mm"
params = { width = 30, height = 15, thickness = 1.5, length = 300 }
aliases = ["U channel 30x15x1.5 300 mm", "C channel 30x15 300 mm", "30x15 channel 300"]
standard = "step.parts generic channel model"

[[presets]]
id = "C30x15x1.5-400"
title = "C channel 30 × 15 × 1.5, 400 mm"
params = { width = 30, height = 15, thickness = 1.5, length = 400 }
aliases = ["U channel 30x15x1.5 400 mm", "C channel 30x15 400 mm", "30x15 channel 400"]
standard = "step.parts generic channel model"

[[presets]]
id = "C30x15x1.5-500"
title = "C channel 30 × 15 × 1.5, 500 mm"
params = { width = 30, height = 15, thickness = 1.5, length = 500 }
aliases = ["U channel 30x15x1.5 500 mm", "C channel 30x15 500 mm", "30x15 channel 500"]
standard = "step.parts generic channel model"

[[presets]]
id = "C30x15x1.5-600"
title = "C channel 30 × 15 × 1.5, 600 mm"
params = { width = 30, height = 15, thickness = 1.5, length = 600 }
aliases = ["U channel 30x15x1.5 600 mm", "C channel 30x15 600 mm", "30x15 channel 600"]
standard = "step.parts generic channel model"

[[presets]]
id = "C30x15x1.5-750"
title = "C channel 30 × 15 × 1.5, 750 mm"
params = { width = 30, height = 15, thickness = 1.5, length = 750 }
aliases = ["U channel 30x15x1.5 750 mm", "C channel 30x15 750 mm", "30x15 channel 750"]
standard = "step.parts generic channel model"

[[presets]]
id = "C30x15x1.5-1000"
title = "C channel 30 × 15 × 1.5, 1000 mm"
params = { width = 30, height = 15, thickness = 1.5, length = 1000 }
aliases = ["U channel 30x15x1.5 1000 mm", "C channel 30x15 1000 mm", "30x15 channel 1000"]
standard = "step.parts generic channel model"

[[presets]]
id = "C40x20x2.0-100"
title = "C channel 40 × 20 × 2.0, 100 mm"
params = { width = 40, height = 20, thickness = 2, length = 100 }
aliases = ["U channel 40x20x2.0 100 mm", "C channel 40x20 100 mm", "40x20 channel 100"]
standard = "step.parts generic channel model"

[[presets]]
id = "C40x20x2.0-150"
title = "C channel 40 × 20 × 2.0, 150 mm"
params = { width = 40, height = 20, thickness = 2, length = 150 }
aliases = ["U channel 40x20x2.0 150 mm", "C channel 40x20 150 mm", "40x20 channel 150"]
standard = "step.parts generic channel model"

[[presets]]
id = "C40x20x2.0-200"
title = "C channel 40 × 20 × 2.0, 200 mm"
params = { width = 40, height = 20, thickness = 2, length = 200 }
aliases = ["U channel 40x20x2.0 200 mm", "C channel 40x20 200 mm", "40x20 channel 200"]
standard = "step.parts generic channel model"

[[presets]]
id = "C40x20x2.0-250"
title = "C channel 40 × 20 × 2.0, 250 mm"
params = { width = 40, height = 20, thickness = 2, length = 250 }
aliases = ["U channel 40x20x2.0 250 mm", "C channel 40x20 250 mm", "40x20 channel 250"]
standard = "step.parts generic channel model"

[[presets]]
id = "C40x20x2.0-300"
title = "C channel 40 × 20 × 2.0, 300 mm"
params = { width = 40, height = 20, thickness = 2, length = 300 }
aliases = ["U channel 40x20x2.0 300 mm", "C channel 40x20 300 mm", "40x20 channel 300"]
standard = "step.parts generic channel model"

[[presets]]
id = "C40x20x2.0-400"
title = "C channel 40 × 20 × 2.0, 400 mm"
params = { width = 40, height = 20, thickness = 2, length = 400 }
aliases = ["U channel 40x20x2.0 400 mm", "C channel 40x20 400 mm", "40x20 channel 400"]
standard = "step.parts generic channel model"

[[presets]]
id = "C40x20x2.0-500"
title = "C channel 40 × 20 × 2.0, 500 mm"
params = { width = 40, height = 20, thickness = 2, length = 500 }
aliases = ["U channel 40x20x2.0 500 mm", "C channel 40x20 500 mm", "40x20 channel 500"]
standard = "step.parts generic channel model"

[[presets]]
id = "C40x20x2.0-600"
title = "C channel 40 × 20 × 2.0, 600 mm"
params = { width = 40, height = 20, thickness = 2, length = 600 }
aliases = ["U channel 40x20x2.0 600 mm", "C channel 40x20 600 mm", "40x20 channel 600"]
standard = "step.parts generic channel model"

[[presets]]
id = "C40x20x2.0-750"
title = "C channel 40 × 20 × 2.0, 750 mm"
params = { width = 40, height = 20, thickness = 2, length = 750 }
aliases = ["U channel 40x20x2.0 750 mm", "C channel 40x20 750 mm", "40x20 channel 750"]
standard = "step.parts generic channel model"

[[presets]]
id = "C40x20x2.0-1000"
title = "C channel 40 × 20 × 2.0, 1000 mm"
params = { width = 40, height = 20, thickness = 2, length = 1000 }
aliases = ["U channel 40x20x2.0 1000 mm", "C channel 40x20 1000 mm", "40x20 channel 1000"]
standard = "step.parts generic channel model"