Strut Services Group, Inc.

Unistrut Alabama

P3000KO

$

P3000KO – 1-5/8″ x 1-3/8″, 12 Gage; Knock Outs

Unistrut’s P3000KO (knock-out) is design for use in electrical raceway and support applications. It is UL listed and CSA listed for use as a strut-type channel raceway. The knock-outs are supplied attached to the strut and can be punched out in the field, as needed, for entry and exit of the wiring from the channel raceway.

This product is commonly used for lighting and other electrical applications. The channel can be used as both the raceway and support for the lighting, minimizing the material needs on the project and providing a clean, aesthetically pleasing installation.

Product dimensions are 1 5/8″ wide x 1 3/8″ tall x 12 ga. thick; with knock-outs. The knock-outs are 7/8″ in diameter and 6″ on center.

Our P3000KO is available in the following finishes: Pre-Galvanized (PG), Hot-Dip Galvanized (HG), Plain (PL) and Green (GR).

 

Part No. Length (ft) Finish Product Weight / Ft (lbs/ft)
P3000KO 10 PG 1.7
P3000KO 20 PG 1.7
P3000KO 20 GR 1.7
P3000KO 10 GR 1.7
P3000KO 20 PL 1.7
P3000KO 10 PL 1.7
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Beam Loading – P3000KO
Beam Loading – P3000KO

Span

(in)


Max Allow. Uniform Load

(lbs)


Deflection at Uniform Load

(in)


Uniform Loading
at Deflection

Lateral Bracing Reduction Factor

Span/180

(lbs)


Span/240

(lbs)


Span/360

(lbs)

24 1,216 0.07 1,216 1,216 1,216 1.00
36 808 0.15 808 808 551 0.96
48 608 0.26 608 466 314 0.91
60 485 0.41 399 295 200 0.88
72 409 0.59 276 209 143 0.84
84 352 0.81 200 152 105 0.82
96 304 1.05 152 114 76 0.79
108 266 1.30 124 95 57 0.77
120 247 1.66 95 76 48 0.75
144 200 2.32 67 48 38 0.70
168 171 3.15 48 38 29 0.66
192 152 4.18 38 29 NR 0.62
216 133 5.21 NR NR NR 0.58
240 124 6.64 NR NR NR 0.54
Note
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Column Loading – P3000KO
Column Loading – P3000KO

Unbraced

Height

(in)


Allowable Load at Slot Face

(lbs)

Max Column Load
Applied at C.G.
K=0.65 (lbs) K=0.80 (lbs) K=1.0 (lbs) K=1.2 (lbs)
24 3,180 9,690 8,980 8,050 7,210
36 2,920 8,160 7,210 6,130 5,240
48 2,590 6,820 5,810 4,730 3,860
60 2,300 5,740 4,730 3,690 2,990
72 2,040 4,850 3,860 2,990 2,270
84 1,830 4,100 3,240 2,400 KL/r>200
96 1,650 3,530 2,770 1,840 KL/r>200
108 1,450 3,080 2,270 KL/r>200 KL/r>200
120 1,250 2,710 1,840 KL/r>200 KL/r>200
Elements of Section – P3000KO
Area of Section 0.5 in2 (3.2 cm2)
Axis 1-1 Axix 2-2
Moment of Inertia (I) 0.12 in4 (5 cm4) 0.203 in4 (8.4 cm4)
Section Modulus (S) 0.153 in3 (2.5 cm3) 0.250 in3 (4.1 cm3)
Radius of Gyration (r) 0.489 in (1.2 cm) 0.638 in (1.6 cm)
Standard Lengths:
  • 10 feet: 10′ or 10’ 1/8” (3.05m) ± 1/8″ (3 mm)
  • 20 feet: 20′ or 20’ 3/8” (6.11m) ± 1/8″ (3 mm)
Special Lengths:
  • Available with a tolerance of ±1/8″ (3 mm). Request quote.
Curved Channel:
  • Many Unistrut channel sections can be supplied with a curve. Contact us for our ordering form, specifications, and instructions.
Load Data:
  • All beam and column load data pertains to carbon steel and stainless steel channels.
  • Load tables apply only to UNISTRUT brand channel. Look for “UNISTRUT” on the product.
  • Load tables and charts are constructed to be in accordance with the SPECIFICATION FOR THE DESIGN OF COLD-FORMED STEEL STRUCTURAL MEMBERS 2007 EDITION published by the AMERICAN IRON AND STEEL INSTITUTE USING ASD METHOD.
  • Loads are based on 33 ksi steel cold formed to 42 ksi.
  • Safety Factor to Yield Strength is 1.67 for Beam Loads and 1.80 for Column Loads.
  • Beam loads are based on a simple beam and are given as a total uniform load (W) in pounds. For proper calculation procedures, refer to our Beam Load Calculation Guide.
  • For bearing loads, reference our bearing loads page.
Welds:
  • Welded channels are spot welded 2″ (51 mm) or 3″ (76 mm) on-center.

Materials & Finishes – Standard:

  • Pregalvanized (PG):  Conforms to ASTM A653 SS GR 33, G90.
  • Unistrut Defender (DF):  Conforms to ASTM A1046 SS GR 33
  • Hot Dip Galvanized (HG):  Steel conforms to ASTM A1011 SS GR 33, Finish conforms to ASTM A123
  • Perma-Green (GR):  Steel conforms to ASTM A1011 SS GR 33, E-Coat finish
  • Perma-Gold (ZD):  Steel conforms to ASTM A1011 SS GR 33, Finish conforms to ASTM B633, Type II SC3
  • Plain (PL):  Conforms to ASTM A1011 SS GR 33

Materials & Finishes – Special Metals:

  • Stainless Steel, Type 304 (SS):  ASTM A240, Type 304 *
  • Stainless Steel, Type 316 (ST):  ASTM A240, Type 316 *
  • Aluminum (EA):  ASTM B221, Type 6063-T6 (Extruded) *

* These materials have different physical properties and performance characteristics. Please contact us for design support.

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