Strut Services Group, Inc.

Unistrut Alabama

A3300

$

A3300 – 1-1/4″ x 3/4″, 14 Gage Channel

 

Part No. Length (ft) Finish Product Weight / Ft (lbs/ft)
A3300 20 PG 0.78
A3300 10 PG 0.78
A3300 20 GR 0.78
A3300 10 GR 0.78
A3300 10 PL 0.78
A3300 20 PL 0.78
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Beam Loading – A3300
Beam Loading – A3300

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)

18 420 0.07 420 420 320 1.00
24 320 0.12 320 270 180 1.00
36 210 0.26 160 120 80 0.97
48 160 0.47 90 70 50 0.94
60 130 0.75 60 40 30 0.91
72 110 1.09 40 30 20 0.89
84 90 1.42 30 20 10 0.87
96 80 1.88 20 20 10 0.85
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Column Loading – A3300
Column Loading – A3300

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)
18 1,430 4,490 4,210 3,860 3,550
24 1,370 4,090 3,750 3,310 2,680
36 1,190 3,390 2,680 1,820 1,260
48 900 2,380 1,600 1,020 KL/r>200
60 680 1,550 1,020 KL/r>200 KL/r>200
Elements of Section – A3300
Area of Section 0.23 in2 (1.5 cm2)
Axis 1-1 Axix 2-2
Moment of Inertia (I) 0.017 in4 (0.7 cm4) 0.052 in4 (2.2 cm4)
Section Modulus (S) 0.038 in3 (0.6 cm3) 0.083 in3 (1.4 cm3)
Radius of Gyration (r) 0.269 in (0.7 cm) 0.477 in (1.2 cm)

Standard Lengths:

  • 10 feet:  10′ or 10’ 1/8” (3.05m) ± 1/2” (13 mm)
  • 20 feet:  20′ or 20’ 3/8” (6.11m) ± 1/2” (13 mm)

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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