Autodesk 256B1-05A761-1301 - AutoCAD Revit Structure Suite 2010, User Manual

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■ Add shelves as the height of casework increases
■ Add diagonals in an open web joist as the length increases
Valid Formula Syntax and Abbreviations
Formulas support the following arithmetic operations: addition, subtraction, multiplication, division,
exponentiation, logarithms, and square roots. Formulas also support the following trigonometric functions:
sine, cosine, tangent, arcsine, arccosine, and arctangent.
The valid formula abbreviations for arithmetic operations and trigonometric functions are
■ Addition— +
■ Subtraction— -
■ Multiplication—*
■ Division—/
■ Exponentiation—^: x^y, x raised to the power of y
■
Logarithm—log
■ Square root—sqrt: sqrt(16)
■ Sine—sin
■ Cosine—cos
■
Tangent—tan
■ Arcsine—asin
■ Arccosine—acos
■ Arctangent—atan
■ e raised to an x power—exp
■ Absolute Value—abs
You can enter integers, decimals, and fractional values in formulas, using normal mathematical syntax, as
shown in the examples below:
■ Length = Width + sqrt(Height*Width)
■ Length = Wall 1 (1 Wall 2 (15000mm)
■ Area = Length (500mm) * Width (300mm)
■ Volume = Length (500mm) * Width (300mm) * Height (800 mm)
■ Width = 100m * cos(angle)
■ x = 2*abs(a) + abs(b/2)
■ ArrayNum = Length/Spacing
Parameter names in formulas are case sensitive. For example, if a parameter name begins with a capital letter,
such as Width, you must enter it in the formula with an initial capital letter. If you enter it in a formula
using lower-case letters instead, for example, width * 2, the software will not recognize the formula.
388 | Chapter 8 Editing Elements