EGN-5439 The Design of Tall Buildings
ETABS Tutorial 2
Define the Static Load Cases
Create the Wind Load Cases
Create Rigid Diaphragms
• Select all, then assign shell rigid diaphragm.
ASCE 7-98 Code Combinations
Case #
X
Y
MX
MY
1
1
1
2
-1
3
1
4
-1
2
1 0.875
0.25
2 0.875
-0.25
3
-0.875
0.25
4
-0.875
-0.25
5
0.875
0.25
6
0.875
-0.25
7
-0.875
0.25
8
-0.875
-0.25
3
1
0.75
0.75
2
-0.75
0.75
3
0.75
-0.75
4
-0.75
-0.75
4
1 0.655
0.655
0.19
0.19
2 0.655
0.655
-0.19
0.19
3 0.655
0.655
0.19
-0.19
4 0.655
0.655
-0.19
-0.19
5
0.655
-0.655 0.19
0.19
6
0.655
-0.655
-0.19
0.19
7
0.655
-0.655 0.19
-0.19
8
0.655
-0.655
-0.19
-0.19
9
-0.655
0.655 0.19
0.19
10
-0.655
0.655
-0.19
0.19
11
-0.655
0.655 0.19
-0.19
12
-0.655
0.655
-0.19
-0.19
13
-0.655
-0.655 0.19
0.19
14
-0.655
-0.655
-0.19
0.19
15
-0.655
-0.655 0.19
-0.19
16
-0.655
-0.655
-0.19
-0.19
•
1.2DL + 1.6LL
•
1.2DL + 0.8W
•
1.2DL + 1.6W + 0.5L
ASCE 7-02 Code Combinations
•
1.2DL + 1.6LL
•
1.2DL + 0.8W
•
1.2DL + 1.6W + 0.5L
Apply Loading to Diaphragm