P1001T - 1-5/8" x 3-1/4", 12 Gage, Back-to-Back, Slotted

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12 Gauge Slotted Strut Channel, Back-to-Back

Unistrut's P1001T, 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. 

Product dimensions are 1 5/8" wide x 3 1/4" tall x 12 ga. thick, back to back. Slots are sized for a 1/2" Threaded Rod or Fastener.

Our P1001T is available in Pre-Galvanized (PG), Unistrut Defender (DF), Hot-Dip Galvanized (HG), Plain (PL), Green (GR), Zinc Dichromate (ZD), and Stainless Steel (SS or ST).

Part No. Length (ft) Finish Product Weight / Ft (lbs/ft)
P1001T 10 PG 3.78
P1001T 20 PG 3.78
P1001T 10 DF 3.92
P1001T 20 DF 3.92
P1001T 10 HG 3.92
P1001T 20 HG 3.92
P1001T 10 GR 3.78
P1001T 20 GR 3.78
P1001T 10 PL 3.78
P1001T 20 PL 3.78
P1001T 20 ZD 3.78

    Beam Loading

    Beam Loading - P1001T
    Span
    (in)     		Max Allowable 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 2,712 0.07 2,712 2,712 2,712 1.00
    48 2,032 0.13 2,032 2,032 2,032 1.00
    60 1,624 0.20 1,624 1,624 1,377 0.97
    72 1,360 0.28 1,360 1,360 961 0.93
    84 1,165 0.39 1,165 1,054 706 0.89
    96 1,020 0.51 1,020 808 536 0.85
    108 901 0.64 850 638 425 0.81
    120 816 0.79 689 519 349 0.78
    144 680 1.14 476 357 238 0.70
    168 578 1.53 349 264 179 0.63
    192 510 2.02 272 204 136 0.56
    216 451 2.54 213 162 111 0.49
    240 408 3.16 170 128 85 0.44
    Note *Load limited by weld shear
    Refer to the General Specifications for loading information.

    Column Loading

    Column Loading - P1001T
    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
    Refer to the General Specifications for loading information.

    Elements of Section

    Elements of Section - P1001T
    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.

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