1¼" Framing System
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A3300 – 1¼" x ¾"
Unistrut
Wt/100 Ft: 78 Lbs (116 kg/100m) ꞏ Allowable Moment 950 In-Lbs (110 N•m) ꞏ 14 Gauge Nominal Thickness .075" (1.9mm)
31.8 4.8 17.5
1 1 ⁄
4 "
7.1 11.2
11 ⁄
7.1
16 "
.440" 9 ⁄ 32 "
9 ⁄
32 "
3 ⁄
16 "
19.1
1
3 ⁄
4 "
1
2
7.9
2
.310"
A3300 - Beam Loading
A3300 - Beam Loading (metric)
Span Max Allowable Uniform Load
Defl. at Uniform Load
Uniform Loading at Deflection
Span Max Allowable Uniform Load
Defl. at Uniform Load
Uniform Loading at Deflection
Span/180 Span/240 Span/360
Span/180 Span/240 Span/360
(in)
(lb) 420 320 210 160 130 110
(in)
(lb) 420 320 160
(lb) 420 270 120
(lb) 320 180
(mm)
(kN)
(mm)
(kN)
(kN)
(kN)
18 24 36 48 60 72 84 96
0.07 0.12 0.26 0.47 0.75 1.09 1.42 1.88
600 750
1.4 1.2 0.8 0.7 0.6 0.5 0.4
3 5 8
1.4 1.1 0.6 0.4 0.3 0.2 0.1
1.2 0.8 0.4 0.3 0.2 0.1 0.1
0.8 0.5 0.3
80 50 30 20 10 10
1000 1250 1500 1750 2000
90 60 40 30 20
70 40 30 20 20
12 18 24 33
02
0.1 0.1 0.1
90 80
A3300 - Column Loading
A3300 - Column Loading (metric)
Unbraced Height
Maximum Allowable Load at Slot Face
Maximum Column Load Applied at C.G.
Unbraced Height
Maximum Allowable Load at Slot Face
Maximum Column Load Applied at C.G.
K = 0.65 K = 0.80 K = 1.0 K = 1.2
K = 0.65 K = 0.80 K = 1.0 K = 1.2
(in)
(lb)
(lb)
(lb)
(lb)
(lb)
(mm)
(kN)
(kN) 18.3 16.7 13.8 10.1
(kN) 16.8 14.9 10.4
(kN) 14.9 11.5
(kN) 12.2
18 24 36 48 60
1430 1370 1190
4490 4090 3390 2380 1550
4210 3750 2680 1600 1020
3860 3310 1820 1020
3550 2680 1260
600 750
6.1 5.8 4.9 3.9 3.1
8.4 4.7
1000 1250 1500
6.8 4.3
900 680
** **
6.8 4.7
** **
**
7.1
**
A3300/A3301 - Elements of Section
ꞏ Finishes: PL, GR, HG, PG; Standard Lengths: 10' & 20' ꞏ Notes: * Load limited by spot weld shear ** KL⁄r > 200 ꞏ NR = Not Recommended
1. Beam loads are given in total uniform load (W Lbs) not uniform load (w lbs/ft or w lbs/in). 2. Beam loads are based on a simple span and assumed to be adequately laterally braced. Unbraced spans can reduce beam load carrying capacity. 3. Deduct channel weight from the beam loads. 4. For concentrated midspan point loads, multiply beam loads by 50% and the corresponding deflection by 80%. 5. All beam loads are for bending about Axis 1-1.
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