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Section 5
5-135
f
1
Value of the corresponding constants. For E, G,
POISSON, DENSITY, ALPHA and CDAMP, built-
in material names can be entered instead of f
1
. The
built-in names are STEEL, CONCRETE &
ALUMINUM. Appropriate values will be
automatically assigned for the built-in names.
CONSTANTS in Kip, inch, Fahrenheit units
Constant Steel Concrete Aluminum Units
E (US) 29000 3150 10000 Kip/in
2
Poisson’s 0.30 .17 .33
Density .000283 .0000868 .000098 Kip/in
3
Alpha 6.5E-6 5.5E-6 12.8E-6 L/L/deg-F
CDAMP .03 .05 .03 Ratio
E (nonUS) 29732.736 Kip/in
2
CONSTANTS in MKS units
Constant Steel Concrete Aluminum Units
E (US) 199 947 960 21 718 455 68 947 573 kN/m
2
Poisson’s 0.30 .17 .33
Density 76.819 541 23.561 612 26.601 820 kN/m
3
Alpha 12.0E-6 10.0E-6 23.0E-6 L/L/deg-C
CDAMP .03 .05 .03 Ratio
E (nonUS) 205 000 000 kN/m
2
E (US) is used if US codes were installed or if Member Properties
American is specified for an analysis; otherwise E (nonUS) is used.
f
2
, f
3
, f
4
Global X, Y, and Z coordinates for the reference
point or
f
5
use location of joint f
5
for the reference point, from
which the BETA angle will be calculated by STAAD
(see section 1.5.3).