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

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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

    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
    Refer to the General Specifications for loading information.

    Column Loading

    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
    Refer to the General Specifications for loading information.

    Elements of Section

    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)

    General Specifications

    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:

    Curved Channel:

    • Many Unistrut channel sections can be supplied with a curve. Click here 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

    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.