Unconventional Craftsman - Craft without conventionRequest a quote
All field tools

Ramp & slope calculator

Arrange ramp sections and level landings, then plan the threaded rod lengths.

Your slope

What do you know?
Size the ramp using
Exclude all landing lengths. Landings add to the overall run. If you measured the whole layout, subtract its landings here.
Start measuring from
Height above your common level reference.
Joint positions
How are these lengths measured?
Enter each separate section in order; lengths are added automatically to locate each joint. Separate lengths with commas or new lines.
Level landings

Add each landing separately. It adds distance with no rise or drop; your sloped pieces keep their full lengths.

Enter at least two ramp section lengths above to place a landing between them.
Set threaded rod lengths

Set-out heights

Slope4.658%Falling · 2.667°
Rise : run1:21.47Vertical : horizontal
Per horizontal foot0.5589″Drop
Ramp profile
100%
Start1End044′ 8 3/4″ horizontal

Drag to pan · pinch or Ctrl + wheel to zoom

Schematic side view · Not to scale
Sloped pieces
44′ 9 5/16″along the ramp
Level landings
0″No height change
Overall horizontal run
44′ 8 3/4″Includes landings

Top: 25″ → bottom: 0″, above the same level reference. Joint distances are measured along the ramp from the top.

Ramp surface elevations at each joint, working from the top
JointFrom topSurface height
Top0″0 in25″25 in
Section 1 end13′ 2 3/4″158.75 in17 5/8″17.614 inDrop: 7 3/8″
Bottom44′ 9 5/16″537.3319 in0″0 inDrop: 25″

Fractions rounded to 1/16″; decimal readings shown to 0.0001 in. Each height is calculated directly from the start, before rounding.

Sloped sections share one slope. Landings stay level at the preceding section’s end height and add distance only. Joint and foot distances include any landings passed along the way.

The profile follows the travel route; for a turning landing, the overall run is the sum along the route, not a straight-line site footprint. Calculate changes of slope as separate runs.

Threaded rod presets

A middle and end support for each entered ramp section and landing. Set the hardware offsets once, then adjust the ground reading at any foot.

Measure vertically from the walking surface to the underside of the bracket supported by the rod.
The bottom reference for the clear gap. Include any plate, pad or base below that reference.
Combined rod length outside the clear gap, through the brackets, nuts, washers and foot attachment. Count it once.
Extra rod beyond the calculated assembly length. This does not change the preset gap.
Use the same level reference as the ramp heights. 0 assumes the ground is at that reference level.
Feet at each support position

Middle = 50% of each section; end = its joint. Feet are assumed directly below those positions, with vertical rods. Ground correction: positive for higher ground, negative for lower ground.

Enter the mounting depth and hardware allowance to calculate rod lengths. Use 0 only when no allowance is needed.

1 ramp sections · 0 landings · 2 foot positions · hardware measurements needed

Section 113′ 2 3/4″ along ramp

Middle

6′ 7 3/8″ from top

Surface height: 21 5/16″

Enter the mounting depth, hardware allowance and ground measurements.

End

13′ 2 3/4″ from top

Surface height: 17 5/8″

Enter the mounting depth, hardware allowance and ground measurements.

31′ 6 9/16″ of the ramp is beyond the entered sections. Add the remaining lengths above to include their feet.

Preset clear gap is measured from the top of the foot base to the underside of the ramp bracket. Set that gap approximately before lifting the section into place.

Total rod length adds your hardware and spare allowances, rounded up to 1/16″. Check the final settings with a level and use the engagement and extension limits for your actual hardware.