Series 2, 3, 4, & 5 Steel -
Straight Sections
3" NEMA VE 1 Loading Depth
4" Side Rail Height
Straight Section Part Numbering
Prefix
Example: 248 P 09 - 24 - 144
Series
Material
*Type
*Width
P = Pre-Galvanized LadderG = HDGAF
06 = 6" rung spacing
09 = 9" rung spacing
12 = 12" rung spacing
248
346
444
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
120
240
144
240
288
=
=
=
=
=
=
¨Primary
12
10
20
12
20
24
ft.
ft.
ft.
ft.
ft.
ft.
248
346
444
Length.
Length.
¡Secondary
See page CTS-23 for
explanation of lengths.
Rung
Spacing
Width
(Inside)
Overall Width
(Width + (*))
(*)=13/16” (Series 2)
13/8” (Series 3,4,5)
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-3
Red = Normally long lead-time items
Cable Tray Systems
Series 2, 3, 4, & 5 Steel -
Straight Sections
3" NEMA VE 1 Loading Depth
4" 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 publish 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
1.00
248
4.188
NEMA, CSA & UL
Classifications
Span
ft
Load
lbs/ft
Deflection
Multiplier
NEMA: 16A, 12C
CSA: D1-3m
6
8
10
12
14
16
412*
232
148
103
76
58
0.0007
0.0022
0.0054
0.011
0.021
0.036
NEMA, CSA & UL
Classifications
Span
ft
Load
lbs/ft
Deflection
Multiplier
NEMA: 20A, 16B
CSA: D1-6m
10
12
14
16
18
20
252
175
129
98
78
63
0.0035
0.0072
0.013
0.023
0.037
0.056
NEMA, CSA & UL
Classifications
Span
ft
Load
lbs/ft
Deflection
Multiplier
NEMA: 20B, 16C
CSA: E-3m
12
16
18
20
22
24
253
142
112
91
75
63
0.0055
0.017
0.028
0.042
0.062
0.088
3.14
UL Cross-Sectional
Area: 0.40 in2
18 gauge
B-Line
Series
Side Rail
Dimensions
1.50
346
4.188
3.13
UL Cross-Sectional
Area: 0.70 in2
16 gauge
B-Line
Series
Side Rail
Dimensions
1.50
444
4.188
3.11
14 gauge
UL Cross-Sectional
Area: 1.00 in2
Design Factors Span
for Two Rails meters
Area=0.62 in2
Sx=0.64 in3
Ix=1.43 in4
1.8
2.4
3.0
3.7
4.3
4.9
Design Factors Span
for Two Rails meters
Area=0.89 in2
Sx=0.96 in3
Ix=2.22 in4
3.0
3.7
4.3
4.9
5.5
6.1
Design Factors Span
for Two Rails meters
Area=1.19 in2
Sx=1.27 in3
Ix=2.94 in4
3.7
4.9
5.5
6.1
6.7
7.3
Load
kg/m
Deflection
Multiplier
613*
345
221
153
113
86
0.012
0.038
0.093
0.192
0.356
0.607
Load
kg/m
Deflection
Multiplier
375
260
191
146
116
94
0.060
0.124
0.229
0.391
0.626
0.955
Load
kg/m
Deflection
Multiplier
376
212
167
135
112
94
0.093
0.295
0.473
0.721
1.055
1.495
Design Factors
for Two Rails
Area=4.00 cm2
Sx=10.49 cm3
Ix=59.52 cm4
Design Factors
for Two Rails
Area=5.74 cm2
Sx=15.73 cm3
Ix=92.40 cm4
Design Factors
for Two Rails
Area=7.68 cm2
Sx=20.81 cm3
Ix=122.37 cm4
*When using 18" rung spacing, load capacity is limited to 394 lbs/ft (586.272 kg/m) for 30" cable tray width and 325 lbs/ft
(483.6 kg/m) for 36" cable tray width. 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-4