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STAAD Commands and Input Instructions
Section 5
5-326
General Format:
LOAD i
⎧ X
⎫ ⎧ XR f
1
, f
2
⎫
WIN
D LOAD ⎨ Y ⎬ (f) TYPE j (OPEN)⎨ YR f
1
, f
2
⎬
⎩
Z
⎭
⎪
ZR
f
1
, f
2
⎪
⎪
LIS
T memb-list
⎪
⎩ ALL
⎭
Where
i Load case number
X, -X, Z or -Z, Y or -Y Direction of wind in global axis system.
Use horizontal directions only.
See
Sections
1.17.3 and
5.31.3
j Type number of previously defined systems
f The factor to be used to multiply the wind loads.
Negative signs may be used to indicate opposite direction
of resulting load (default=1.0)
f
1
and f
2
global coordinate values to specify X or Y or Z
range for member selection.
OPEN optional word to be used if loading is to be
generated on open-type of structures. If this not
specified, load will be generated assuming the panels
are “closed”.
X, -X, Z or –Z [A minus sign indicates that suction occurs on the
other side of the selected structure.] and the f factor. If all of the
members are selected and X (or Z) is used and the factor is positive,
then the exposed surfaces facing in the –x (or –z) direction will be
loaded in the positive x (or z) direction (normal wind in positive
direction). See diagrams that follow
. If X and a negative factor is
used, then the exposed surfaces facing in the +x direction will be
loaded in the negative x direction (normal wind in negative
direction). [If –X is entered and a negative factor, then the exposed
surfaces facing in the -x direction will be loaded in the negative x
direction (suction). If –X is entered and a positive factor, then the
exposed surfaces facing in the +x direction will be loaded in the
positive x direction (suction).]