Where to measure
Rise is the vertical difference between the ideal base reference planes. Available horizontal run includes the lead-in plus the sloped section’s horizontal reach; it excludes the far-end tail.
Worked geometry example
With a 150 mm rise and a 30° angle, ideal sloped length is 300 mm and horizontal reach is about 259.81 mm. A 600 mm available run leaves about 340.19 mm before the rise.
How the geometry is calculated
For rise H and angle θ: sloped length = H / sin(θ); horizontal reach = H / tan(θ); lead-in = available run − horizontal reach. Angles are in degrees. These are ideal geometric lengths, not bend allowances.
What the stages show
A continuous-base construction: a closing V in both side walls at A, an opening slit at B, and two retained base fold axes. The V half-width is d = side height × tan(angle / 2). An opening-side connection detail is required; actual connection hardware and material allowances are not specified.
Common questions
Does the 3D show exact cutting profiles?
The tool shows an ideal V-notch template and a continuous-base folding method. Actual cuts also depend on bend radius, tray profile, material and the approved connection detail.
Can I use inches?
Yes. Units change the display; internal geometry stays in millimeters.
Can I use it on my phone?
Yes. Rotate and zoom the model, choose a stage or open full screen. Use the side view when you need a simpler diagram.
Related resources
Cable Tray Measuring Guide ↗Horizontal Bend ↗
All tools ↗
Notch formula reference
Half-angle notch geometry is described by the tray manufacturer below. The continuous-base closing/opening construction shown here is an ideal geometric model; the connection detail must suit the actual tray.
Leizheng cable tray: notch geometry (Chinese) ↗