P3000KO - 1-5/8" x 1-3/8", 12 Gage; Knock Outs

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Cut Sheet
Part No. Length (ft) Finish Product Weight / Ft (lbs/ft)
P3000KO 10 PG 1.7
P3000KO 20 PG 1.7
P3000KO 20 GR 1.7
P3000KO 10 GR 1.7
P3000KO 20 PL 1.7
P3000KO 10 PL 1.7

    Beam Loading

    Beam Loading - P3000KO
    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 1,216 0.07 1,216 1,216 1,216 1.00
    36 808 0.15 808 808 551 0.96
    48 608 0.26 608 466 314 0.91
    60 485 0.41 399 295 200 0.88
    72 409 0.59 276 209 143 0.84
    84 352 0.81 200 152 105 0.82
    96 304 1.05 152 114 76 0.79
    108 266 1.30 124 95 57 0.77
    120 247 1.66 95 76 48 0.75
    144 200 2.32 67 48 38 0.70
    168 171 3.15 48 38 29 0.66
    192 152 4.18 38 29 NR 0.62
    216 133 5.21 NR NR NR 0.58
    240 124 6.64 NR NR NR 0.54
    Note
    Refer to the General Specifications for loading information.

    Column Loading

    Column Loading - P3000KO
    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 3,180 9,690 8,980 8,050 7,210
    36 2,920 8,160 7,210 6,130 5,240
    48 2,590 6,820 5,810 4,730 3,860
    60 2,300 5,740 4,730 3,690 2,990
    72 2,040 4,850 3,860 2,990 2,270
    84 1,830 4,100 3,240 2,400 KL/r>200
    96 1,650 3,530 2,770 1,840 KL/r>200
    108 1,450 3,080 2,270 KL/r>200 KL/r>200
    120 1,250 2,710 1,840 KL/r>200 KL/r>200
    Refer to the General Specifications for loading information.

    Elements of Section

    Elements of Section - P3000KO
    Area of Section 0.5 in2 (3.2 cm2)
    Axis 1-1 Axix 2-2
    Moment of Inertia (I) 0.12 in4 (5 cm4) 0.203 in4 (8.4 cm4)
    Section Modulus (S) 0.153 in3 (2.5 cm3) 0.250 in3 (4.1 cm3)
    Radius of Gyration (r) 0.489 in (1.2 cm) 0.638 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.