P4000 - 1-5/8" x 13/16", 16 Gage, Solid

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This 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 13/16" tall x 16 ga. thick, solid. Punched holes are also available for ease of installation. The advantage of a shallow, lighter gauge profile is to avoid over-engineering in a project that requires supporting lighter loads.

Our P4000 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) and Aluminum (EA).

Part No. Length (ft) Finish Product Weight / Ft (lbs/ft)
P4000 20 PG 0.82
P4000 10 PG 0.82
P4000 10 HG 0.869
P4000 20 HG 0.869
P4000 20 GR 0.83
P4000 10 GR 0.83
P4000 20 PL 0.82
P4000 10 PL 0.82
P4000 10 ZD 0.82
P4000 20 ZD 0.82
P4000 10 SS 0.82
P4000 20 SS 0.82
P4000 20 ST 0.82
P4000 10 EA 0.45
P4000 20 EA 0.45

    Beam Loading

    Beam Loading - P4000
    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)
    24 410 0.11 410 370 250 1.00
    36 270 0.24 220 170 110 0.94
    48 200 0.43 120 90 60 0.88
    60 160 0.67 80 60 40 0.83
    72 140 1.01 60 40 30 0.79
    84 120 1.38 40 30 20 0.75
    96 100 1.72 30 20 20 0.72
    108 90 2.20 20 20 10 0.69
    120 80 2.68 20 10 10 0.66
    Refer to the General Specifications for loading information.

    Column Loading

    Column Loading - P4000
    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 1,630 4,670 4,290 3,780 3,310
    36 1,450 3,840 3,310 2,460 1,730
    48 1,160 3,030 2,190 1,400 970
    60 870 2,120 1,400 900 KL/r>200
    72 670 1,470 970 KL/r>200 KL/r>200
    Refer to the General Specifications for loading information.

    Elements of Section

    Elements of Section - P4000
    Area of Section 0.244 in2 (1.6 cm2)
    Axis 1-1 Axix 2-2
    Moment of Inertia (I) 0.023 in4 (1 cm4) 0.092 in4 (3.8 cm4)
    Section Modulus (S) 0.049 in3 (0.8 cm3) 0.113 in3 (1.9 cm3)
    Radius of Gyration (r) 0.306 in (0.8 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.

    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.