Strut Services Group, Inc.

Unistrut Alabama

P1001

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P1001 – 1-5/8″ x 3-1/4″, 12 Gage Back-to-Back, Solid

12 Gauge Solid Strut Channel, Back-to-Back

Unistrut’s P1001, often known as 12 Gauge Standard or Deep Back-to-Back Strut Channel, is commonly used for trapeze supports, seismic bracing, ceiling grids, pipe, conduit, duct and cable tray supports, racks, and other general framing. For application examples, refer to our Application Showcase.

The P1001AW is OPA approved for seismic bracing and the P1001 will be included in our upcoming OPM. It is also UL Listed and CSA Listed for use as a Strut-Type Channel Raceway.

Product dimensions are 1 5/8″ wide x 3 1/4″ tall x 12 ga. thick, back to back. Punched holes are also available for ease of installation.

Our P1001 is available in Pre-Galvanized (PG), Unistrut Defender (DF), Hot-Dip Galvanized (HG), Plain (PL), Green (GR), Zinc Dichromate (ZD), Stainless Steel (SS or ST) and Aluminum (EA).

Part No. Length (ft) Finish Product Weight / Ft (lbs/ft)
P1001 20 PG 3.78
P1001 10 PG 3.78
P1001 10 DF 4.028
P1001 20 DF 4.028
P1001 20 HG 4.028
P1001 10 HG 4.028
P1001 20 GR 3.78
P1001 10 GR 3.78
P1001 20 PL 3.78
P1001 10 PL 3.78
P1001 10 ZD 3.78
P1001 20 ZD 3.78
P1001 10 SS 3.78
P1001 20 SS 3.78
P1001 10 ST 3.78
P1001 20 ST 3.78
P1001 10 EA 1.34
P1001 20 EA 1.34
Beam Loading – P1001

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 * 3,500 0.02 * 3,500 * 3,500 * 3,500 1.00
36 3,190 0.07 3,190 3,190 3,190 1.00
48 2,390 0.13 2,390 2,390 2,390 1.00
60 1,910 0.20 1,910 1,910 1,620 0.97
72 1,600 0.28 1,600 1,600 1,130 0.93
84 1,370 0.39 1,370 1,240 830 0.89
96 1,200 0.51 1,200 950 630 0.85
108 1,060 0.64 1,000 750 500 0.81
120 960 0.79 810 610 410 0.78
144 800 1.14 560 420 280 0.70
168 680 1.53 410 310 210 0.63
192 600 2.02 320 240 160 0.56
216 530 2.54 250 190 130 0.49
240 480 3.16 200 150 100 0.44
Note *Load limited by weld shear
Column Loading – P1001

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 6,430 24,280 23,610 22,700 21,820
36 6,290 22,810 21,820 20,650 19,670
48 6,160 21,410 20,300 18,670 16,160
60 6,000 20,210 18,670 15,520 12,390
72 5,620 18,970 16,160 12,390 8,950
84 5,170 16,950 13,630 9,470 6,580
96 4,690 14,890 11,190 7,250 5,040
108 4,170 12,850 8,950 5,730 3,980
120 3,690 10,900 7,250 4,640 KL/r>200
144 2,930 7,630 5,040 KL/r>200 KL/r>200
Elements of Section – P1001
Area of Section 1.111 in2 (7.2 cm2)
Axis 1-1 Axix 2-2
Moment of Inertia (I) 0.928 in4 (38.6 cm4) 0.471 in4 (19.6 cm4)
Section Modulus (S) 0.571 in3 (9.4 cm3) 0.580 in3 (9.5 cm3)
Radius of Gyration (r) 0.914 in (2.3 cm) 0.651 in (1.7 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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