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CABLE TRUNKTRUNK FILLING CAPACITY
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بتعدل هنا فقط
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Cable Diameter (mm)Number of cables
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34205DEPENDING ON 40% FACTOR OF OCCUPANCY:-
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GENERAL EQUATION:-
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Trunk Height (mm)
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200N x AC = F AT
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πD2C
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Trunk Width (mm)N x =
F x W x H
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4653٫09.4
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WHERE:-
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F:FACTOR OF OCCUPANCY, (TAKEN 40%)
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N:NO. OF SIMILAR CABLES INSIDE THE TRUNK.
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AC:OVERALL CROSS SECTION OF DATA OR TEL. CABLE0٫2121
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AT:OVERALL CROSS SECTION OF TRUNK
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DC:OVERALL OUTSIDE DIAMETER OF DATA OR TEL. CABLE
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W:WIDTH OF TRUNK (mm)
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H:HEIGHT OF TRUNK (mm)
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SPECIFICATIONS OF USED CABLES:-
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1-DATA CABLE (CAT6)
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OUTSIDE DIAMETER = 6mm
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2-TEL. CABLE (CAT5)
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OUTSIDE DIAMETER = 5٫3mm
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WORST CASE CALCULATIONS:-
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1-TRUNK (CASE 1 ON THIS DRAWING)
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N =100
Number of
DATA CABLE (CAT6)
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H =50mm
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F =40%
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N x AC = F AT
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πD2C
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N x =F x W x H
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4
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πD2C
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W =N=141٫37mm
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FxHx4
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(SELECT) W =50
mm
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TRUNK SIZE =50x50mm
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Number of Data CablesTrunk Size (W x H) mm
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5 : 3050 x 50
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30 : 60100 x 50
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60 : 95150 x 50
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95 : 125200 x 50
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125 : 155250 x 50
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