Aluminum Formwork & Falsework Equipment

Aluminum Joists

The SCI Standard Aluminum Joist is the common element that may be utilized with flying forms, hand set slab forming, and gang-type wall form systems.  

SCI Aluminum Joists may also be used with many other applications whenever a platform or deck is required, such for access systems, concert stages, political stages, walkways, etc.  

The wood nailer (or composite) provides a positive means in which to attach plywood (or other) decking material, and the continuous bolt slot along the base allows for quick, efficient attachment to SCI's Aluminum Stringers, or other elements, when used with SCI's Standard Aluminum Clip Assembly or Multi-Purpose Clip Assembly.  

The high strength-to-weight ratio, and the reliability of extruded aluminum's dimensional stability, gives the user complete confidence in the forming and or access system that is being designed and constructed.  

Structural Contours, Inc. offers a complete range of Aluminum Joist sizes as you will see below. If you have any questions as to which Aluminum Joist would best suit your particular requirements, please contact us for assistance.

Please click on which item you wish to view:  

 5"x 6.5" STANDARD ALUMINUM JOIST

ALLOWABLE UNIFORM LOADING IN LBS./FT. & KG/M

SPAN 

LOAD 

 FEET 

METERS 

 LBS/FT 

 KG/M 

4'-0" 

1.22 

2475 

3688 

5'-0" 

1.53 

1585 

2362 

6'-0" 

1.83 

1100 

1639 

7'-0" 

2.14 

810 

1207 

8'-0" 

2.44 

620 

924 

9'-0" 

2.75 

455 

678 

10'-0" 

3.05 

330 

492 

Minimum Safety Factor is 2.5:1. Deflection limited to Span/360   Load=Dead Load + Live Load 

 

4" x 6.5" STANDARD ALUMINUM JOIST

ALLOWABLE UNIFORM LOADING IN LBS./FT. & KG/M 

SPAN 

LOAD 

FEET 

METERS 

LBS/FT 

KG/M 

4'-0" 

1.22 

2475 

3688 

5'-0" 

1.53 

1585 

2362 

6'-0" 

1.83 

1100 

1639 

7'-0" 

2.14 

810 

1207 

8'-0" 

2.44 

620 

924 

9'-0" 

2.75 

455 

678 

10'-0" 

3.05 

330 

492 

Minimum Safety Factor is 2.5:1. Deflection  limited to span/360   Load=Dead Load + Live Load 

 

5" x 5.5" LIGHT DUTY ALUMINUM JOIST

ALLOWABLE UNIFORM LOADING IN LBS./FT. & KG/M

SPAN 

LOAD 

FEET 

METERS 

LBS/FT 

KG/M 

4'-0" 

1.22 

1575 

2347 

5'-0" 

1.53 

995 

1483 

6'-0" 

1.83 

575 

857 

7'-0" 

2.14 

365 

544 

8'-0" 

2.44 

245 

365 

9'-0" 

2.75 

170 

253 

10'-0" 

3.05 

125 

186 

Minimum Safety Factor is 2.5:1. Deflection limited to span/360   Load=Dead Load + Live Load 

 

4" x 5.5" LIGHT DUTY ALUMINUM JOIST

ALLOWABLE UNIFORM LOADING IN LBS./FT. & KG/M 

SPAN 

LOAD 

FEET 

METERS 

LBS/FT 

KG/M 

4'-0" 

1.22 

1575 

2347 

5'-0" 

1.53 

995 

1483 

6'-0" 

1.83 

575 

857 

7'-0" 

2.14 

365 

544 

8'-0" 

2.44 

245 

365 

9'-0" 

2.75 

170 

253 

10'-0" 

3.05 

125 

186 

Minimum Safety Factor is 2.5:1. Deflection limited to span/360   Load=Dead Load + Live Load