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STAAD Commands and Input Instructions
Section 5
5-248
5.32.2 Member Load Specification
Purpose
This set of commands may be used to specify MEMBER loads on
frame members.
General format:
MEM
BER LOAD
⎧UNI or UMOM direction-spec f
1
, f
2
, f
3
, f
4
, f
14
⎫
member-list
⎨CON or CMOM direction-spec f
5
, f
6
, f
4
, f
14
⎬
⎪LIN direction-spec f , f , f ⎪
7 8 9
⎩
TRAP direction-spec f
10
, f
11
, f
12
, f
13
⎭
⎧X ⎫
⎪Y ⎪
⎪Z ⎪
⎪GX ⎪
direction-spec =
⎨GY ⎬
⎪GZ ⎪
⎪PX ⎪
⎪PY ⎪
⎩
PZ
⎭
UNI or UMOM specifies a uniformly distributed load or moment
with a value of f
1
, at a distance of f
2
from the
start of the member to the start of the load, and a
distance of f
3
from the start of the member to the
end of the load. The load is assumed to cover the
full member length if f
2
and f
3
are omitted.
UMOM is not available for tapered members.
CON or CMOM specifies a concentrated force or moment with a
value of f
5
applied at a distance of f
6
from the
start of the member. f
6
will default to half the
member length if omitted.
f
4
= Perpendicular distance from the member shear
center to the local plane of loading. The value is
positive in the general direction of the parallel (or