Examples
Examples
Try the starting example
- Track length (metres)
- 10
- Linear expansion coefficient (per kelvin)
- 1.7e-05
- Temperature increase (kelvins)
- 30
- Identical expansion gaps (count)
- 5
- Free expansion (millimetres)
- 5.1
- Equal gap share (millimetres/gap)
- 1.02
Try another scenario
- Track length (metres)
- 15
- Linear expansion coefficient (per kelvin)
- 2e-05
- Temperature increase (kelvins)
- 40
- Identical expansion gaps (count)
- 6
- Free expansion (millimetres)
- 12
- Equal gap share (millimetres/gap)
- 2
Calculation method
Calculation method
Free expansion (millimetres)
Length metres×coefficient×temperature increase×1000.
Equal gap share (millimetres/gap)
Free expansion/gap count; allocation assumption only.
Symbols and units
- a
- Track length (metres)
- b
- Linear expansion coefficient (per kelvin)
- c
- Temperature increase (kelvins)
- d
- Identical expansion gaps (count)
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
- Linear free thermal expansion from a user-supplied coefficient; no recommendation for rail fastening or joint design. Supported limits: All numeric inputs and computed intermediates must remain finite. Supported numeric input magnitude is zero or 1e-12 through 1e12 in absolute value; reject values outside this bounded range. All lists/JSON record tables are limited to 100 records unless a stricter bound is stated; reject malformed record arity and wrong member types. All numeric values must be finite. Lists contain at most 100 records; required lists must be nonempty. Rates, probabilities and fractions are entered as fractions, not percentages; fractions must be between 0 and 1. Use a single consistent user-selected currency for all amounts; no exchange-rate conversion.
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.