ABCDEFGHIJKLMNOPQRSTUVWXYZ
1
2
CABLE TRUNKTRUNK FILLING CAPACITY
3
Cable Diameter (mm)Number of cables
4
789DEPENDING ON 40% FACTOR OF OCCUPANCY:-
5
6
GENERAL EQUATION:-
7
Trunk Height (mm)
8
100N x AC = F AT
9
10
πD2C
11
Trunk Width (mm)N x =
F x W x H
12
85.634
13
14
WHERE:-
15
16
F:FACTOR OF OCCUPANCY, (TAKEN 40%)
17
N:NO. OF SIMILAR CABLES INSIDE THE TRUNK.
18
AC:OVERALL CROSS SECTION OF DATA OR TEL. CABLE
19
AT:OVERALL CROSS SECTION OF TRUNK
20
DC:OVERALL OUTSIDE DIAMETER OF DATA OR TEL. CABLE
21
W:WIDTH OF TRUNK (mm)
22
H:HEIGHT OF TRUNK (mm)
23
24
SPECIFICATIONS OF USED CABLES:-
25
26
1-DATA CABLE (CAT6)
27
OUTSIDE DIAMETER = 6.35mm
28
29
2-TEL. CABLE (CAT5)
30
OUTSIDE DIAMETER = 5.3mm
31
32
WORST CASE CALCULATIONS:-
33
34
1-TRUNK (CASE 1 ON THIS DRAWING)
35
36
N =93
Number of
DATA CABLE (CAT6)
37
H =50mm
38
F =40%
39
N x AC = F AT
40
41
πD2C
42
N x =F x W x H
43
4
44
45
πD2C
46
W =N=147.3mm
47
FxHx4
48
49
(SELECT) W =50
mm
50
51
TRUNK SIZE =50x50mm
52
53
Number of Data CablesTrunk Size (W x H) mm
54
5 : 3050 x 50
55
30 : 60100 x 50
56
60 : 95150 x 50
57
95 : 125200 x 50
58
125 : 155250 x 50
59
60
61
62
TRUNK FILLING CAPACITY
63
64
DEPENDING ON 40% FACTOR OF OCCUPANCY:-
65
66
GENERAL EQUATION:-
67
68
N x AC = F AT
69
70
πD2C
71
N x =
F x W x H
72
4
73
74
WHERE:-
75
76
F:FACTOR OF OCCUPANCY, (TAKEN 40%)
77
N:NO. OF SIMILAR CABLES INSIDE THE TRUNK.
78
AC:OVERALL CROSS SECTION OF DATA OR TEL. CABLE
79
AT:OVERALL CROSS SECTION OF TRUNK
80
DC:OVERALL OUTSIDE DIAMETER OF DATA OR TEL. CABLE
81
W:WIDTH OF TRUNK (mm)
82
H:HEIGHT OF TRUNK (mm)
83
84
SPECIFICATIONS OF USED CABLES:-
85
86
1-ACCESS CONTROL CABLE
87
OUTSIDE DIAMETER = 10.16mm
88
89
2-CAMERA SIGNAL CABLE
90
OUTSIDE DIAMETER = 6mm
91
92
WORST CASE CALCULATIONS:-
93
94
1-TRUNK (CASE 1 ON THIS DRAWING)
95
96
N =15
Number of
ACCESS CONTROL CABLE
97
H =50mm
98
F =40%
99
N x AC = F AT
100