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Steelwork
: Understanding Parameters
Understanding Parameters
There are several different types of parameters available in PARAGON. Profile geometry components normally only use those defined for the profile, however, Design Parameters may be used.
Parameter Types
Type
Description
Structural Usage
PARA
Parameter
Profiles, fittings, joint and penetrations
DESP
Design Parameter
Profiles, fittings, joint and penetrations
OPAR
Owning Parameter
Fittings, joints and penetrations
APAR
Attached Parameter
Joints and penetrations
ODESP
Owning Design Parameter
Fittings, joints and penetrations
ADESP
Attached Design Parameter
Joints and penetrations
Parameter Operations
Parameter values may be manipulated using mathematical operators to derive the appropriate value for the geometry component.
The following table shows the different operators available with query examples:
Operator
Description
Query Example
Result
+
add
Q (10 + 10)
20
-
subtract or minus
Q (10 – 20 – (100))
-110
*
multiply
Q (10 * 10)
100
/
divide
Q (10 / 10)
1
SIN
singe of angle (degrees)
Q (sin (30))
0.5
COS
cosine of angle (degrees)
Q (cos (60))
0.5
TAN
tangent of angle (degrees)
Q (tan (45))
1
ASIN
arc sine (degrees)
Q (asin (1))
90°
ACOS
arc cosine (degrees)
Q (acos (-1))
180°
ATAN
arc tangent (degrees)
Q (atan (1))
45°
ATANT
arc tangent of two lengths
Q (atant (5, 2))
68.119°
MIN
minimum of two or more values
Q (min (5, 4, 8))
4
MAX
maximum of two or more values
Q (max (1, 50, 1348))
1348
SQRT
square root
Q (sqrt (16))
4
POW
raise to the power of
Q (pow (2, 3))
8
ABS
absolute value
Q (abs (-156))
156
Parameter Syntax
Expressions in the structural application of Paragon require a specific syntax, e.g. round parentheses are used in the expression to control the sequence of calculation, square parentheses are used to contain parameter numbers and there must be a space either side of a mathematical operator.
When the expression is entered, either via an appropriate window or via the command line, PARAGON re-evaluates the expression and it may appear different to the way it was entered if it is edited. Some typical expressions are:
(PARA [1] / 2)
(PARA [1] / 2 – PARA [4] – (PARA [2] / 2 – PARA [3] / 2) / 2 * TAN (8))
(OPAR [4] * COS (30))
(- OPAR [1] / 2 + APAR [4] + DESP [6])
(ODESP [1] / 2 – ADESP [1])
1974 to current year.
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