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Aluminium Joists & Stringers

Stringer Beam 190MM

Aluma-Stringer-image.jpg

The Stringer is stronger and deeper than the normal Beam. It is 190 mm (7.5 in.) deep and permits larger spans between intermediate supports. It provides structural strength comparable to a 152mm x 304mm (6 in. x 12 in.) spruce member but has only one third the weight.

Applications:

  • Use as a stringer (primary member) for slab formwork

  • May also be used as a beam or a joist (secondary member)



Stringer 190 mm (7.5 in.) Table of Load Ratings at Given Spans

Span 

Deflection1

L/360

Load

L/360

Deflection2 

L/270

Load2 

L/270

1.2 m

4 ft

1.8 mm

.07 inches

51.6 (kN/m)

3537 (lb/ft)

1.8 mm

.07 inches

51.6 (kN/m)

3537 (lb/ft)

1.53 m

5 ft

3.3 mm

.13 inches

41.3 (kN/m)

2830 (lb/ft)

3.3 mm

.13 inches

41.3 (kN/m)

2830 (lb/ft)

1.83 m

6 ft

5.1 mm

.20 inches

30.6 (kN/m)

2100 (lb/ft)

6.8 mm

.27 inches

36.5 (kN/m)

2500 (lb/ft)

2.13 m

7 ft

5.9 mm

.23 inches

19.2 (kN/m)

1319 (lb/ft)

7.9 mm

.31 inches

25.7 (kN/m)

1760 (lb/ft)

2.44 m

8 ft

6.8 mm

.27 inches

13.0 (kN/m)

891 (lb/ft)

9.0 mm

.36 inches

17.3 (kN/m)

1188 (lb/ft)

2.74 m

9 ft

7.7 mm

.30 inches

9.1 (kN/m)

621 (lb/ft)

10.1 mm

.40 inches

12.1 (kN/m)

828 (lb/ft)

3.05 m

10 ft

8.5 mm

.33 inches

6.4 (kN/m)

441 (lb/ft)

11.3 mm

.44 inches

8.6 (kN/m)

588 (lb/ft)

3.35 m

11 ft

9.3 mm

.37 inches

5.6 (kN/m)

386 (lb/ft)

12.4 mm

.49 inches

7.52 (kN/m)

515 (lb/ft)

3.66 m

12 ft

10.2 mm

.40 inches

4.4 (kN/m)

298 (lb/ft)

13.5 mm

.53 inches

5.80 (kN/m)

397 (lb/ft)

3.96 m

13 ft

11.0 mm

.43 inches

3.4 (kN/m)

234 (lb/ft)

14.7 mm

.58 inches

4.56 (kN/m)

312 (lb/ft)

4.27 m

14 ft

11.9 mm

.47 inches

2.7 (kN/m)

188 (lb/ft)

15.8 mm

.62 inches

3.66 (kN/m)

251 (lb/ft)

4.57 m

15 ft

12.7 mm

.50 inches

2.2 (kN/m)

152 (lb/ft)

16.9 mm

.67 inches

2.96 (kN/m)

203 (lb/ft)

4.88 m

16 ft

13.5 mm

.53 inches

1.8 (kN/m)

126 (lb/ft)

18.1 mm

.71 inches

2.45 (kN/m)

168 (lb/ft)

5.18 m

17 ft

14.4 mm

.57 inches

1.5 (kN/m)

105 (lb/ft)

19.2 mm

.76 inches

2.04 (kN/m)

140 (lb/ft)

5.49 m

18 ft

15.2 mm

.60 inches

1.3 (kN/m)

88 (lb/ft)

20.3 mm

.80 inches

1.71 (kN/m)

117 (lb/ft)

5.79 m

19 ft

16.1 mm

.63 inches

1.1 (kN/m)

75 (lb/ft)

21.4 mm

.84 inches

1.46 (kN/m)

100 (lb/ft)

6.10 m

20 ft.

16.9 mm

.67 inches

0.93 (kN/m)

64 (lb/ft)

22.6 mm

.89 inches

1.24 (kN/m)

85 (lb/ft)

1Deflections based on simple spans.

2Design Load: Dead Load and Live Load

Factor of Safety: 2.2 to 1. Stringer to be laterally supported.

 

Technical Data


MetricImperial
Weight*7.8 kg/m5.2 lb / ft
1xx14.17 x 106  mm434.04 in4
Smax.160 x 10mm39.76 in3
Smin.139 x 10mm38.48 in3
Area2497 mm23.87 in2
*Includes 51 x 51 mm (22 in) wood railing strip

  

Standard Lengths and Weights

MetricImperial
3.66 m/28.5 kg12 ft / 62 lb
4.27 m /33.3 kg14 ft / 73 lb
4.88 m /38.1 kg16 ft / 84 lb
6.10 / 47.2 kg20 ft / 104 lb