P1004A - 1-27/32" x 4-7/8", 12 Gage, Plates on Each Side

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Part No. Length (ft) Finish Product Weight / Ft (lbs/ft)
P1004A 20 PG 6.68
P1004A 10 PG 6.68
P1004A 10 HG 7.102
P1004A 20 HG 7.102
P1004A 10 GR 6.68
P1004A 20 GR 6.68
P1004A 10 PL 6.68
P1004A 20 PL 6.68

    Beam Loading

    Beam Loading - P1004A
    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 * 9,100 0.01 * 9,100 * 9,100 * 9,100 1.00
    36 * 9,100 0.05 * 9,100 * 9,100 * 9,100 1.00
    48 7,000 0.08 7,000 7,000 7,000 0.94
    60 5,600 0.13 5,600 5,600 5,600 0.89
    72 4,660 0.19 4,660 4,660 4,660 0.83
    84 4,000 0.26 4,000 4,000 3,630 0.78
    96 3,500 0.34 3,500 3,500 2,780 0.72
    108 3,110 0.43 3,110 3,110 2,200 0.67
    120 2,800 0.52 2,800 2,670 1,780 0.62
    144 2,330 0.75 2,330 1,850 1,230 0.52
    168 2,000 1.03 1,810 1,360 910 0.44
    192 1,750 1.34 1,390 1,040 690 0.38
    216 1,550 1.69 1,100 820 550 0.34
    240 1,400 2.10 890 670 440 0.31
    Refer to the General Specifications for loading information.

    Column Loading

    Column Loading - P1004A
    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 11,420 36,800 33,890 30,440 27,600
    36 10,600 30,840 27,600 24,400 22,160
    48 9,860 26,400 23,560 21,060 19,470
    60 9,160 23,370 21,060 19,160 18,020
    72 8,610 21,310 19,470 18,020 17,140
    84 8,170 19,890 18,410 17,260 15,240
    96 7,790 18,890 17,670 16,760 11,670
    108 7,460 18,160 17,140 13,280 9,220
    120 7,150 17,590 16,760 10,750 7,470
    144 5,660 16,840 11,670 7,470 KL/r>200
    168 4,520 12,990 8,570 KL/r>200 KL/r>200
    Refer to the General Specifications for loading information.

    Elements of Section

    Elements of Section - P1004A
    Area of Section 1.965 in2 (12.7 cm2)
    Axis 1-1 Axix 2-2
    Moment of Inertia (I) 4.068 in4 (169.3 cm4) 1.092 in4 (45.5 cm4)
    Section Modulus (S) 1.669 in3 (27.4 cm3) 1.190 in3 (19.5 cm3)
    Radius of Gyration (r) 1.439 in (3.7 cm) 0.745 in (1.9 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 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 are given as total uniform load (W) in pounds. For proper calculation procedures, refer to our Beam Load Calculation Guide.
    • For bearing loads, reference 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.