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Water Heat Exchanger Unit
(4) Example anchor bolt calculation
Example of evaluation using calculations (In the case of S-710WX2E5)
(1) Anchor bolt conditions
1) Total no. of bolts (N)
2) Bolt diameter (D)
3) Bolt cross-sectional area (A)
4) Bolts on one side (end-on direction, n
5) The installation method is for "embedded J or JA type bolts," on a 15-cm-thick slab
Anchor bolt allowable short-term tensile load (T
(The installation method may also be selected after completing calculations.)
(2) Calculation
1) Design horizontal seismic magnitude (K
2) Operating load (W)
(= operating mass × 9.8)
3) Horizontal earthquake force (F
4) Height of center-of-gravity (h
5) Vertical earthquake force (F
6) Distance from center-of-gravity to bolt
End-on direction (L
Broadside direction (L
7) Bolt span
End-on direction (L
Broadside direction (L
GHP Chiller TECHNICAL DATA.indb A-32
GHP Chiller TECHNICAL DATA.indb A-32
)
1
(broadside direction, n
)
2
)
H
)
H
)
G
)
V
)
G1
)
G2
)
1
)
2
A-32
8. Center of gravity and
earthquake resistance
N = 4
current models have four bolts
D = 12 mm for M12 bolts
A = πD
2
2
/ 4 = 113 mm
n
= 2
current models have two bolts
1
n
= 2
current models have two bolts
2
) Ta = 11,760 N
a
K
= 1.0 Installation location: K
H
W = 1,470 N
F
= K
· W = 1,470 N
H
H
h
=
414
mm
G
F
= F
/ 2 =
735
N
V
H
L
=
555
mm
G1
L
= 138.5 mm
G2
L
= 1,014 mm
1
L
=
mm
312
2
roof
: 1.0
H
ground : 0.4
2012/04/06 13:42:07
2012/04/06 13:42:07
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