P4001 - 1-5/8" x 1-5/8", 16 Gage, Back-to-Back, Solid

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Unistrut's P4001 (back-to-back solid) channel is our 16 gauge channel that 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 13/16" tall x 16 ga. thick, solid. Punched holes are also available for ease of installation. This channel type is an opportunity to design a support for a lighter system using a lower profile.

Our P4001 is available in the following finishes:  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)
P4001 10 PG 1.66
P4001 20 PG 1.66
P4001 10 HG 1.738
P4001 20 HG 1.738
P4001 10 GR 1.66
P4001 20 GR 1.66
P4001 20 PL 1.66
P4001 10 PL 1.66
P4001 20 SS 1.66
P4001 20 EA 0.66
P4001 10 EA 0.66

    Beam Loading

    Beam Loading - P4001
    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 * 810 0.05 * 810 * 810 * 810 1.00
    36 710 0.14 710 710 500 1.00
    48 540 0.25 540 430 280 0.98
    60 430 0.40 360 270 180 0.93
    72 360 0.57 250 190 130 0.88
    84 310 0.78 190 140 90 0.83
    96 270 1.02 140 110 70 0.79
    108 240 1.29 110 80 60 0.74
    120 210 1.54 90 70 50 0.69
    144 180 2.29 60 50 30 0.60
    Note *Load limited by weld shear
    Refer to the General Specifications for loading information.

    Column Loading

    Column Loading - P4001
    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 2,830 10,390 10,000 9,470 8,960
    36 2,740 9,530 8,960 7,870 6,700
    48 2,590 8,620 7,480 5,910 4,440
    60 2,340 7,380 5,910 4,090 2,840
    72 2,020 6,110 4,440 2,840 1,970
    84 1,700 4,880 3,260 2,090 KL/r>200
    96 1,440 3,780 2,500 KL/r>200 KL/r>200
    108 1,230 2,990 1,970 KL/r>200 KL/r>200
    Refer to the General Specifications for loading information.

    Elements of Section

    Elements of Section - P4001
    Area of Section 0.487 in2 (3.1 cm2)
    Axis 1-1 Axix 2-2
    Moment of Inertia (I) 0.104 in4 (4.3 cm4) 0.183 in4 (7.6 cm4)
    Section Modulus (S) 0.128 in3 (2.1 cm3) 0.225 in3 (3.7 cm3)
    Radius of Gyration (r) 0.462 in (1.2 cm) 0.613 in (1.6 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.