P1000SL - 1-5/8" x 1-5/8", 12 Gage; Long Slots

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Unistrut's P1000SL has slots on the back side for use with 3/8" threaded rod and fasteners. These slots can eliminate the need for field drilling and allow adjustability when installing.

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 1 5/8" tall x 12 ga. thick; with slots. The slots are 13/32" wide x 3" long, 4" on center and sized for use with 3/8" Threaded Rod or Fasteners.

Our P1000SL is available in the following finishes:  Pre-Galvanized (PG), Hot-Dip Galvanized (HG), Plain (PL), Green (GR), Zinc Dichromate (ZD) and Stainless Steel (SS).

Part No. Length (ft) Finish Product Weight / Ft (lbs/ft)
P1000SL 10 PG 1.85
P1000SL 20 PG 1.85
P1000SL 20 HG 1.908
P1000SL 10 HG 1.908
P1000SL 20 GR 1.85
P1000SL 10 GR 1.85
P1000SL 20 PL 1.85
P1000SL 10 PL 1.85
P1000SL 10 ZD 1.85
P1000SL 20 ZD 1.85
P1000SL 20 SS 1.85
P1000SL 10 SS 1.85
P1000SL 20 EA 0.74

    Beam Loading

    Beam Loading - P1000SL
    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 1,437 0.06 1,437 1,437 1,437 1.00
    36 961 0.13 961 961 765 0.94
    48 723 0.22 723 646 425 0.88
    60 578 0.35 553 408 272 0.82
    72 476 0.50 383 289 187 0.78
    84 408 0.68 281 213 136 0.75
    96 357 0.89 213 162 111 0.71
    108 323 1.14 170 128 85 0.69
    120 289 1.40 136 102 68 0.66
    144 238 2.00 94 68 51 0.61
    168 204 2.72 68 51 34 0.55
    192 179 3.55 51 43 NR 0.51
    216 162 4.58 43 34 NR 0.47
    240 145 5.62 34 NR NR 0.44
    Note NR - Not Recommended
    Refer to the General Specifications for loading information.

    Column Loading

    Column Loading - P1000SL
    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 3,550 10,740 9,890 8,770 7,740
    36 3,190 8,910 7,740 6,390 5,310
    48 2,770 7,260 6,010 4,690 3,800
    60 2,380 5,910 4,690 3,630 2,960
    72 2,080 4,840 3,800 2,960 2,400
    84 1,860 4,040 3,200 2,480 1,980
    96 1,670 3,480 2,750 2,110 1,660
    108 1,510 3,050 2,400 1,810 KL/r>200
    120 1,380 2,700 2,110 KL/r>200 KL/r>200
    144 1,150 2,180 1,660 KL/r>200 KL/r>200
    Refer to the General Specifications for loading information.

    Elements of Section

    Elements of Section - P1000SL
    Area of Section 0.555 in2 (3.6 cm2)
    Axis 1-1 Axix 2-2
    Moment of Inertia (I) 0.185 in4 (7.7 cm4) 0.236 in4 (9.8 cm4)
    Section Modulus (S) 0.202 in3 (3.3 cm3) 0.290 in3 (4.8 cm3)
    Radius of Gyration (r) 0.577 in (1.5 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.

    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.