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STAAD Commands and Input Instructions
Section 5
5-234
5.31.3 Definition of Wind Load
Purpose
This set of commands may be used to define some of the
parameters for generation of wind loads on the structure. See
section 5.32.12, Generation of Wind Loads, for the definition of
wind direction and the possible surfaces to be loaded. Section
1.17.3 of this manual describes the two types of structures on
which this load generation can be performed.
See Section 1.17.3,
5.32.12 and
E
xamples manual
p
roblem no. 15
The wind load generator can be used to generate lateral loads in
the horizontal - X and Z (or Y if Z up) - directions only.
General Format:
DEFINE WIND LOAD
TYPE j
INTENSITY p
1
p
2
p
3
... p
n
HEIGHT h
1
h
2
h
3
... h
n
⎧e
1
JOINT joint-list ⎫
EXPOSURE ⎧ ⎫
⎨e
1
YRANGE f
1
f
2
if Y UP
⎬
⎩
or
⎭
⎩
e
1
ZRANGE f
1
f
2
if Z UP
⎭
EXPOSURE e
2
- same definition as e
1
-
. . .
EXPOSURE e
m
-ditto-
where,
j = wind load system type number (integer)
p
1
,p
2
,p
3
...p
n
wind intensities (pressures) in force/area. Up to 100
different intensities can be defined in the input file
per type.
h
1
,h
2
,h
3
...h
n
corresponding heights in global vertical direction up
to which the above intensities occur.