Strut Services Group, Inc.

Unistrut Alabama

P4101T

$

P4101T – 1-5/8″ x 1-5/8″, 14 Gage Back-to-Back, Slotted

Unistrut’s P4101T (back-to-back slotted) has slots between the two profiles on the welded side. This slotted option is popular because it’s adjustable yet has modest load capacity loss versus the solid version. It has 85% of the capacity of the solid version of the profile.

This channel is commonly used for trapeze supports, anchoring to concrete, 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 14 ga. thick; back-to-back with slots. The slots are 2″ wide x 11/16″ long, 3″ on center and sized for use with 5/8″ threaded rod or fasteners.

Our P4101T 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)
P4101T 10 PG 1.74
P4101T 20 PG 1.74
P4101T 20 GR 1.74
P4101T 10 GR 1.74
P4101T 10 ZD 1.74
P4101T 20 ZD 1.74
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Beam Loading – P4101T
Beam Loading – P4101T

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 *1,090 0.06 *1,090 * 1,090 * 926 1.00
36 680 0.14 680 680 485 1.00
48 510 0.25 510 408 272 1.00
60 408 0.39 349 264 170 0.96
72 340 0.57 238 179 119 0.92
84 289 0.76 179 136 85 0.89
96 255 1.00 136 102 68 0.85
108 230 1.29 111 77 51 0.81
120 204 1.57 85 68 43 0.78
144 170 2.26 60 43 34 0.71
168 145 3.05 43 34 26 0.64
192 128 4.02 34 NR NR 0.57
216 111 4.96 NR NR NR 0.50
240 102 6.28 NR NR NR 0.45
Note NR – Not Recommended
Note *Load limited by weld shear
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Column Loading – P4101T
Column Loading – P4101T

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 3,240 12,370 11,950 11,370 10,540
36 3,120 11,470 10,540 9,160 7,720
48 2,940 10,090 8,680 6,770 4,980
60 2,680 8,560 6,770 4,590 3,190
72 2,310 7,010 4,980 3,190 2,220
84 1,950 5,530 3,660 2,340 KL/r>200
96 1,650 4,250 2,800 KL/r>200 KL/r>200
108 1,410 3,360 2,220 KL/r>200 KL/r>200
Elements of Section – P4101T
Area of Section 0.579 in2 (3.7 cm2)
Axis 1-1 Axix 2-2
Moment of Inertia (I) 0.117 in4 (4.9 cm4) 0.214 in4 (8.9 cm4)
Section Modulus (S) 0.143 in3 (2.3 cm3) 0.264 in3 (4.3 cm3)
Radius of Gyration (r) 0.449 in (1.1 cm) 0.608 in (1.5 cm)
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:
  • Available with a tolerance of ±1/8″ (3 mm). Request quote.
Curved Channel:
  • Many Unistrut channel sections can be supplied with a curve. Contact us 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 – 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.

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