Sanyo SGP-E70J2GU2 User Manual page 84

Design
Example of earthquake resistance calculation sheet
Model name:
1. Foundation bolt data
No. of foundation bolts
Foundation bolt diameter
Foundation cross-sectional area : A= D
Installation method
Foundation bolt short term allowable load : Ta=
2. Calculation
Design horizontal magnitude
Operating load
Horizontal earthquake force
Height of center of gravity
Vertical earthquake force
Bolt span
No. of bolts
Pull out load
Pull out load
Shear force
Tensile stress
Judgment
Calculation formulae
Pull out load
R =
b
Allowable tensile stress in bolt subjected to simultaneous shear stress
τ
f = 1.4f -1.6 f : Allowable tensile stress in bolt simultaneously subject to shear stress (N/mm
ts t ts
f :Allowable tensile stress in bolt subject to tensile stress only (N/mm
t
Reference: The material SS400 short term allowable tensile stress ft 176 N/mm
SS400 short term allowable shear stress 132×0.75 N/mm
<Calculation dimensions>
7. Center of gravity position and earthquake resistant design
Earthquake resistance calculation sheet
: N=
: D=
π
: K =
H
: W =
: F = K
H H
: h =
G
: F = F
V H
Short direction
l =
1
n =
1
R =
b1
R = N R < T
b1 b1
τ
2
=F /N A= N/mm
H
τ
< f (= 132×0.75N/mm
s
σ
=R /A= N/mm
1 b1
τ
f = 1.4f -1.6 = N/mm
ts t
OK
R
F h - (W -F ) l
b
H G V G
l : Bolt span (mm) (short direction: l
l n
n : No. of bolts (short direction: n
l
G
2
G
h
l
G1
l
1
No. of bolts in short direction: n
mm No. of bolts in long direction : n
2 2
/4= mm
(refer to construction method)
N/bolt
N(product mass×9.8)
W= N
mm
/2= N
mm
bolts
N
(= N/bolt)
a
2
)
2
σ
2
< f (= 176N/mm )
1 t
2
σ
2
< f = N/mm
1 ts
NG
: Pull out load (N)(short direction: R
: Distance to CofG (mm) (short direction: l
However, l l /2
G
2 ,
Short direction
(front)
D - 40
(can also be selected after calculation)
Design horizontal
Installation
location
On the roof
On the ground
Long direction
l =
2
n =
2
R =
b2
R = N R < T (=
b2 b2 a
τ
2
=F /N A= N/mm
H
τ
< f (= 132×0.75N/mm
s
σ
=R /A= N/mm
1 b2
σ
τ
f =1.4f -1.6 = N/mm
ts t
σ
OK
, long direction: R
b1
, long direction: l
1 2
, long direction: n )
1 2
, long direction: l
G1
2
)
2
)
G
Long direction
l
G2
l
2
=
1
=
2
magnitude K
H
1.0
0.4
mm
bolts
N
N/bolt)
2
)
2
2
< f (= 176N/mm )
2 t
2
2
< f = N/mm
2 ts
NG
)
b2
)
)
G2