Fabrication method Continuous-base rise

Tools/ Vertical Offset

Cable Tray Vertical Offset Calculator & 3D Guide

Calculate rise geometry and notch dimensions, then inspect cutting, retained base folds and the formed tray in 3D.

Beta · 3D geometry preview

Plan your rise

H = 150 mm · θ = 30°

Drag to rotate · pinch or scroll to zoom

Form: close A and open B to level the tail. Toggle the purple connection cover to inspect the opening.

Cutting layout · continuous-base method

Side-wall layout, repeated on both sides. A is the closing bend; B is the opening bend. Stations are measured along the straight base from its starting end.

A · Remove VB · Slit sides2d = 26.79 mmA = 340.19 mm · B = 640.19 mm · A→B = 300.00 mm

Notch height and small openings are enlarged for readability. Use the labelled dimensions; do not measure from the screen.

● Keep base connected

━ Cut side walls┄ Base fold axis■ Removed material■ Connection cover

At A, remove the V from both walls and fold upward until its edges meet. At B, slit both walls to the base, then counter-fold to make the tail horizontal. The walls open at B: provide a compatible connection detail; purple shows the gap-cover region, not a specified fastener or plate design.

Ideal thin-sheet geometry: excludes kerf, bend radius, rolled lips, material allowance and connection specifications. This method keeps the base joined at both axes; do not cut across it.

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) ↗