Series 2, 3, 4, & 5 Steel -
Straight Sections
6" NEMA VE 1 Loading Depth
7" Side Rail Height
Straight Section Part Numbering
Prefix
Example: 378 P 09 - 24 - 240
Series
Material
*Type
*Width
P = Pre-Galvanized LadderG = HDGAF
06 = 6" rung spacing
09 = 9" rung spacing
12 = 12" rung spacing
378
476
574
Trough6" thru 36" wide
VT = Vented Trough
ST = Non-Ventilated Trough
For side rail & rung
data, see chart on
pages AP-5 &
AP-6
06
09
12
18
24
30
36
=
=
=
=
=
=
=
6"
9"
12"
18"
24"
30"
36"
¨
¡
¨
¡
¨
¡
Length
144
240
240
288
240
288
=
=
=
=
=
=
¨Primary
12
20
20
24
20
24
ft.
ft.
ft.
ft.
ft.
ft.
378
476
574
Length.
Length.
¡Secondary
See page CTS-23 for
explanation of lengths.
Rung
Spacing
Width
(Inside)
Overall Width
(Width + 13/8")
See page APP-1 for additional rung options. *Special sizes available.
Ladder Type
Ventilated Trough
Non-Ventilated Trough
Series 2, 3, 4, & 5 Steel
(Specify Rung Spacing)
Green = Fastest shipped items
Black = Normal lead-time items
HST-9
Red = Normally long lead-time items
Cable Tray Systems
Series 2, 3, 4, & 5 Steel -
Straight Sections
6" NEMA VE 1 Loading Depth
7" Side Rail Height
Values are based on simple beam tests per NEMA VE 1 on 36" wide cable tray with rungs spaced on 12" centers. Cable trays will
support without collapse a 200 lb. (90.7 kg) concentrated load over and above published loads. Published load safety factor is 1.5.
To convert 1.5 safety factor to 2.0, multiply published load by 0.75. To obtain mid-span deflection, multiply a load by the deflection
multiplier. Cable tray must be supported on spans shorter than or equal to the length of the cable tray being installed.
Individual rungs will support without collapse a 200 lb. (90.7 kg) concentrated load applied at the mid-span of the rung, over and
above the NEMA rated cable load with a 1.5 safety factor for highlighted NEMA spans and loads.
B-Line
Series
Side Rail
Dimensions
1.50
378
7.188
NEMA, CSA & UL
Classifications
Span
ft
Load
lbs/ft
Deflection
Multiplier
NEMA: 20A, 16B
CSA: D1-3m
8
10
12
14
16
18
20
319
204
142
104
80
63
51
0.0006
0.0014
0.0028
0.0052
0.0089
0.014
0.022
NEMA, CSA & UL
Classifications
Span
ft
Load
lbs/ft
Deflection
Multiplier
NEMA: 20B, 16C
CSA: D1-6m
12
16
18
20
22
24
214
120
95
77
64
53
0.0019
0.0061
0.010
0.015
0.022
0.031
NEMA, CSA & UL
Classifications
Span
ft
Load
lbs/ft
Deflection
Multiplier
NEMA: 20C
CSA: E-6m
12
16
18
20
22
24
361
203
160
130
107
90
0.0014
0.0046
0.0073
0.011
0.016
0.023
6.14
UL Cross-Sectional
Area: 0.70 in2
18 gauge
B-Line
Series
Side Rail
Dimensions
1.50
476
7.188
6.13
UL Cross-Sectional
Area: 1.00 in2
16 gauge
B-Line
Series
Side Rail
Dimensions
1.50
574
7.188
6.11
14 gauge
UL Cross-Sectional
Area: 1.50 in2
Design Factors Span
for Two Rails meters
Area=1.01 in2
Sx=1.77 in3
Ix=6.90 in4
2.4
3.0
3.7
4.3
4.9
5.5
6.1
Design Factors Span
for Two Rails meters
Area=1.22 in2
Sx=2.14 in3
Ix=8.30 in4
3.7
4.9
5.5
6.1
6.7
7.3
Design Factors Span
for Two Rails meters
Area=1.64 in2
Sx=2.87 in3
Ix=11.10 in4
3.7
4.9
5.5
6.1
6.7
7.3
Load
kg/m
Deflection
Multiplier
Design Factors
for Two Rails
474
304
211
155
119
94
76
0.009
0.023
0.048
0.089
0.151
0.242
0.369
Area=6.52 cm2
Sx=29.01 cm3
Ix=287.20 cm4
Load
kg/m
Deflection
Multiplier
Design Factors
for Two Rails
318
179
141
115
95
80
0.033
0.105
0.168
0.255
0.374
0.529
Load
kg/m
Deflection
Multiplier
537
302
239
193
160
134
0.025
0.078
0.125
0.191
0.280
0.396
Area=7.87 cm2
Sx=35.07 cm3
Ix=345.47 cm4
Design Factors
for Two Rails
Area=10.58 cm2
Sx=47.03 cm3
Ix=462.02 cm4
When cable trays are used in continuous spans, the deflection of the cable tray is reduced by as much as 50%. Design factors:
Ix = Moment of Inertia, Sx = Section Modulus.
Series 2, 3, 4, & 5 Steel
Cable Tray Systems
HST-10