Sanyo SGP-E120J2GU2, User Manual

Page: 82 / 175

Design
D - 38
(4) Example anchor bolt calculation
Earthquake resistance evaluation of
SGP-E90J2GU2(10 HP outdoor unit)
The earthquake resistance rank is common use, so the design horizontal earthquake factor K
H
is 1.0G.
(*K
H
= 1.0 is for installation on a roof. For installation on the ground K
H
= 0.4
)
Refer to Item (3) for the position of the center of gravity of the equipment
Foundation bolts
• N
•
•
umber of bolts = 4
• Bolt diameter M12
*If as a result of the calculation this is not acceptable, change the conditions and re-calculate.
Example of evaluation by calculation
Foundation bolt conditions
Total no. of bolts(N
)
N =
㩷 㩷
4
㩷
………..current models have 4 bolts
bolt diameter(D
)
D = 㩷 㩷 12 mm ………..for M12 bolts
bolt cross-sectional area(A
)
A = D
2
/4 = 㩷 113 mm
2
bolts on one side 䋺 short direction(n
1
)
n
1
= 㩷 2 㩷 㩷 ………..current models have 2 bolts
㩷 㩷 㩷 㩷 㩷 㩷 long direction(n
2
)
n
2
= 㩷 2 㩷 㩷 ………..current models have 2 bolts
The installation method is “embedded J type, JA type bolts”, on a slab 12cm thick.
Foundation bolt allowable short term tensile load(T
a
)
………..T
a
= 㩷 11,760 㩷 N
(It is also acceptable to decide the installation method after completing the calculation
)
Calculation
Design horizontal magnitude(K
H
)
K
H
= 㩷 1.0 㩷 㩷 ………..installation location:K
H
on roof: 1.0
㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷
on ground:0.4
Operating load(W
)
W =
㩷
6,566
㩷
N ……….. 70 type:6,860
(=operating mass×9.8
)
90 type:7,056
120 type:9,310
150 type:9,310
190 type:9,604
Horizontal earthquake force(F
H
)
F
H
= K
H
䊶 W= 㩷 㩷 7,056 N
㩷 㩷 㩷 Height of center of gravity(h
)
h
G
= 㩷 700 mm ………..70, 90 type :700
120, 150, 190 type :720
Vertical earthquake force(F
V
)
F
V
=F
H
/2= 㩷 3,528 N
Distance from center of gravity to bolt
S hort direction( l
G1
)
l
G1
=
㩷 㩷
485
㩷
mm
㩷
………..70, 90 type :485
120, 150 type :495
190 type :475
L ong direction( l
G2
)
l
G2
= 㩷 㩷 515 㩷 mm 㩷 ……….. 70, 90 type :515
120, 150, 190 type :525
1
1
2
2
3
π
7. Center of gravity position and earthquake resistant design