### Applies To:

- Revit Structure 2008,2009. May apply to other versions

### Tip:

When entering distances or other parameters interactively, you can use a handy calculator built into in Revit. Prefix a formula with ‘=’ to envoke the inbuilt calculator.

Example: Copy a wall three times a given distance: In the Copy command enter pick the first point and instead of picking a second point simply enter =3*600. Results are the wall copies 1800 from first point. Revit calls this “entering a formula”. There are other formulas you can input:

**Other examples:**

=1000+500 | result: 1500 |

=1000/2 | result: 500 |

=1000-500 | result: 500 |

=(100*2)+300 | result: 500 |

**Formula abbreviations for arithmetic operations & trigonometric functions:**

Addition: | + |

Subtraction: | – |

Multiplication | * |

Division | / |

Exponentiation | / |

Division | ^ {example: x^y is x raised to the power of y} |

Logarithm | log |

Square root | sqrt {example: sqrt(16) } |

Sine | sin |

Cosine | cos |

Tangent | tan |

Arcsine | asin |

Arccosine | acos |

Arctangent | atan |

e raised to an x power | exp |

Absolute Value | abs |

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