Examples
Examples
Try the starting example
- Supports: name, x metres, y metres, observed height cm
- FL,0,0,10 FR,2,0,12 RL,0,3,9 RR,2,3,11
- Selected target rise per x metre (cm/m)
- 0
- Selected target rise per y metre (cm/m)
- 0
- Extra lift above highest required plane intercept (cm)
- 0
- Target plane intercept at x=0,y=0 (cm)
- 12
- Required support lift by point (cm)
- FL: 2; FR: 0; RL: 3; RR: 1
- Largest required lift (cm)
- 3
- Sum of support lift heights (cm)
- 6
Try another scenario
- Supports: name, x metres, y metres, observed height cm
- FL,0,0,10 FR,2,0,12 RL,0,3,9 RR,2,3,11
- Selected target rise per x metre (cm/m)
- 1
- Selected target rise per y metre (cm/m)
- 0
- Extra lift above highest required plane intercept (cm)
- 0
- Target plane intercept at x=0,y=0 (cm)
- 10
- Required support lift by point (cm)
- FL: 0; FR: 0; RL: 1; RR: 1
- Largest required lift (cm)
- 1
- Sum of support lift heights (cm)
- 2
Calculation method
Calculation method
Target plane intercept at x=0,y=0 (cm)
Set intercept=max(observed z−x slope×x−y slope×y)+extra lift, so every target lies at or above its observed support.
Required support lift by point (cm)
Intercept + selected slopes×coordinates − observed height.
Largest required lift (cm)
Maximum individual required height adjustment.
Sum of support lift heights (cm)
Sum adjustments as a material-height tally, not a force or load.
Symbols and units
- a
- Supports: name, x metres, y metres, observed height cm
- b
- Selected target rise per x metre (cm/m)
- c
- Selected target rise per y metre (cm/m)
- d
- Extra lift above highest required plane intercept (cm)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- A measured-point target-plane worksheet. It does not assess vehicle stability, block strength, ground bearing, wheel restraint or safe levelling procedures.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
OpenStax: arithmetic and geometry ↗
Background reading; this does not imply endorsement or independent review of SumFizz.