B.5 Perform Static Analysis
Seismic Analysis
The seismic design will follow the load path from the diaphragms to the vertical resisting elements. The
upper roof metal decking is assumed to act as a flexible diaphragm and will distribute shear to the vertical
resisting elements based on tributary area. The concrete filled deck of the mezzanine acts as a rigid
diaphragm, distributing the shear to the vertical resisting elements based on their relative rigidities.
Diaphragm Shear forces
The first step in the load path is the shear force to the diaphragms. The diaphragm shear forces are due to
their own weight as well as the tributary normal walls.
ROOF DIAPHRAGM WEIGHTS & NORMAL WALLS
Item
Number
Tributary
Length /
Area Unit Weight Trans.
Long.
Height /
Width
(ft.2) (psf / lb.)
Seismic
Seismic
Width
(ft.)
Weight Weight (kips)
(ft.)
(kips)
Roof
1
41
161
6601
18.0
118.8
118.8
CMU Wall A1-A2
1
6
41
246
57.0
0.0
14
CMU Wall I1-I2
1
6
41
246
57.0
0.0
14
CMU Firewall E1-E2
1
10
40
400
57.0
0.0
22.8
Metal Panel Wall 1A-1B
1
5
20
100
4.0
0.4
0.0
Metal Panel Wall 1H-1I
1
5
20
100
4.0
0.4
0.0
Metal Panel Wall 2A-2B
1
5
20
100
4.0
0.4
0.0
Metal Panel Wall 2H-2I
1
5
20
100
4.0
0.4
0.0
Metal Panel Walls Between Doors
10
10
3
300
4.0
1.2
0.0
Metal Roll-Up Doors
12
---
---
---
1200
14.4
0.0
TOTAL
136.0
169.7
(605 KN)
(755 KN)
MEZZAINIE LEVEL WEIGHTS & NORMAL WALLS
Item
Number
Tributary
Length /
Area Unit Weight Trans.
Long.
Height /
Width
(ft.2) (psf / plf) Seismic
Seismic
Width
(ft.)
Weight
Weight
(ft.)
(kips)
(kips)
Decks
2
20
40
1600
49.0
78.4
78.4
25% of Live storage loads
2
20
40
1600
31.3
50.0
50.0
CMU Wall A1-A2
1
10
41
410
57.0
0.0
23.4
CMU Wall I1-I2
1
10
41
410
57.0
0.0
23.4
CMU Wall B1-B2
1
5
40
200
57.0
0.0
11.4
CMU Wall H1-H2
1
5
40
200
57.0
0.0
11.4
Metal Panel Wall 1H-1I
1
10
20
200
4.0
0.8
0.0
Metal Panel Wall 1A-1B
1
10
20
200
4.0
0.8
0.0
Metal Panel Wall 2A-2B
1
10
20
200
4.0
0.8
0.0
Metal Panel Wall 2H-2I
1
10
20
200
4.0
0.8
0.0
TOTAL WEIGHT TRIBUTARY TO MEZZANINE DIAPHRAGMS
131.6
197.9
WEIGHT TRIBUTARY TO EACH MEZZANINE DIAPHRAGM = 1/2 WEIGHT =
65.8
99
(293 KN)
(440 KN)
H1-14
Previous Page
