Load/Span Tables
Essential Insights into Load/Span Capacities
Download Load/Span Tables Here.
| Slab Topping | Joist Size | 40 PSF LL/Joist Spacing (ft) | 50 PSF LL/Joist Spacing (ft) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 2' | 3' | 4' | 5' | 2' | 3' | 4' | 5' | ||
| 3.5" | 6" | 16'-7" | 14'-8" | 13'-4" | 12'-4" | 16'-3" | 14'-6" | 13'-2" | 12'-2" |
| 8" | 20'-4" | 18'-1" | 16'-7" | 15'-6" | 20'-2" | 17'-10" | 16'-3" | 15'-2" | |
| 10" | 24'-0" | 21'-3" | 19'-6" | 18'-2" | 23'-7" | 21'-0" | 19'-2" | 17'-10" | |
| 12" | 27'-3" | 24'-3" | 22'-1" | 20'-6" | 27'-0" | 23'-10" | 21'-10" | 20'-3" | |
| 14" | 30'-6" | 26'-9" | 24'-6" | 22'-8" | 30'-2" | 26'-7" | 24'-2" | 21'-2" | |
| 16" | 33'-4" | 29'-5" | 26'-10" | 25'-0" | 33'-0" | 29'-1" | 26'-6" | 24'-3" | |
| 18" | 34'-0" | 31'-10" | 29'-2" | 27'-1" | 34'-0" | 31'-6" | 28'-8" | 26'-8" | |
| 4.0" | 6" | 16'-2" | 14'-3" | 13'-0" | 12'-1" | 16'-0" | 14'-1" | 12'-10" | 12'-0" |
| 8" | 19'-10" | 17'-7" | 16'-1" | 15'-0" | 19'-8" | 17'-4" | 15'-10" | 14'-9" | |
| 10" | 23'-6" | 20'-9" | 19'-0" | 17'-8" | 23'-2" | 20'-6" | 18'-9" | 17'-6" | |
| 12" | 26'-9" | 23'-9" | 21'-8" | 20'-3" | 26'-6" | 23'-6" | 21'-6" | 20'-0" | |
| 14" | 30'-0" | 26'-7" | 24'-4" | 21'-9" | 28'-6" | 26'-0" | 23'-7" | 20'-6" | |
| 16" | 33'-1" | 29'-4" | 26'-9" | 24'-9" | 32'-7" | 29'-0" | 26'-6" | 23'-6" | |
| 18" | 34'-0" | 31'-8" | 29'-0" | 27'-0" | 33'-6" | 31'-6" | 28'-8" | 25'-8" | |
| Slab Topping | Joist Size | 80 PSF LL/Joist Spacing (ft) | 100 PSF LL/Joist Spacing (ft) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 2' | 3' | 4' | 5' | 2' | 3' | 4' | 5' | ||
| 3.5" | 6" | 15'-7" | 13'-10" | 12'-8" | 11'-6" | 14'-10" | 13'-6" | 11'-10" | 10'-7" |
| 8" | 19'-3" | 17'-2" | 15'-8" | 14'-3" | 18'-10" | 16'-8" | 14'-9" | 13'-3" | |
| 10" | 22'-9" | 20'-2" | 18'-6" | 16'-7" | 22'-3" | 19'-8" | 17'-2" | 15'-4" | |
| 12" | 25'-6" | 23'-0" | 20'-7" | 18'-6" | 25'-3" | 22'-1" | 19'-2" | 17'-1" | |
| 14" | 28'-10" | 24'-0" | 22'-6" | 20'-3" | 28'-2" | 24'-2" | 20'-8" | 18'-6" | |
| 16" | 31'-9" | 28'-1" | 24'-7" | 22'-0" | 31'-2" | 25'-5" | 22'-9" | 20'-4" | |
| 18" | 34'-0" | 30'-6" | 26'-6" | 23'-6" | 33'-6" | 28'-2" | 24'-7" | 20'-7" | |
| 4.0" | 6" | 15'-4" | 13'-6" | 12'-3" | 11'-0" | 15'-0" | 13'-2" | 11'-3" | 10'-2" |
| 8" | 19'-0" | 16'-7" | 15'-4" | 13'-8" | 18'-2" | 16'-3" | 14'-2" | 12'-8" | |
| 10" | 22'-3" | 19'-11" | 18'-2" | 16'-6" | 22'-0" | 19'-4" | 17'-2" | 15'-4" | |
| 12" | 25'-4" | 22'-7" | 20'-7" | 18'-6" | 23'-7" | 22'-2" | 19'-3" | 17'-3" | |
| 14" | 28'-2" | 23'-9" | 22'-0" | 20'-1" | 27'-10" | 23'-6" | 20'-5" | 18'-5" | |
| 16" | 31'-6" | 28'-0" | 24'-7" | 21'-9" | 30'-8" | 26'-7" | 22'-8" | 20'-5" | |
| 18" | 34'-0" | 30'-6" | 26'-6" | 23'-5" | 33'-7" | 28'-5" | 24'-7" | 21'-2" | |
| Slab | Joist | 40 PSF LL/Joist Spacing (ft) | |||
|---|---|---|---|---|---|
| 2' | 3' | 4' | 5' | ||
| 3.5" | 6" | 16'-7" | 14'-8" | 13'-4" | 12'-4" |
| 8" | 20'-4" | 18'-1" | 16'-7" | 15'-6" | |
| 10" | 24'-0" | 21'-3" | 19'-6" | 18'-2" | |
| 12" | 27'-3" | 24'-3" | 22'-1" | 20'-6" | |
| 14" | 30'-6" | 26'-9" | 24'-6" | 22'-8" | |
| 16" | 33'-4" | 29'-5" | 26'-10" | 25'-0" | |
| 18" | 34'-0" | 31'-10" | 29'-2" | 27'-1" | |
| 4.0" | 6" | 16'-2" | 14'-3" | 13'-0" | 12'-1" |
| 8" | 19'-10" | 17'-7" | 16'-1" | 15'-0" | |
| 10" | 23'-6" | 20'-9" | 19'-0" | 17'-8" | |
| 12" | 26'-9" | 23'-9" | 21'-8" | 20'-3" | |
| 14" | 30'-0" | 26'-7" | 24'-4" | 21'-9" | |
| 16" | 33'-1" | 29'-4" | 26'-9" | 24'-9" | |
| 18" | 34'-0" | 31'-8" | 29'-0" | 27'-0" | |
| Slab | Joist | 50 PSF LL/Joist Spacing (ft) | |||
|---|---|---|---|---|---|
| 2' | 3' | 4' | 5' | ||
| 3.5" | 6" | 16'-3" | 14'-6" | 13'-2" | 12'-2" |
| 8" | 20'-2" | 17'-10" | 16'-3" | 15'-2" | |
| 10" | 23'-7" | 21'-0" | 19'-2" | 17'-10" | |
| 12" | 27'-0" | 23'-10" | 21'-10" | 20'-3" | |
| 14" | 30'-2" | 26'-7" | 24'-2" | 21'-2" | |
| 16" | 33'-0" | 29'-1" | 26'-6" | 24'-3" | |
| 18" | 34'-0" | 31'-6" | 28'-8" | 26'-8" | |
| 4.0" | 6" | 16'-0" | 14'-1" | 12'-10" | 12'-0" |
| 8" | 19'-8" | 17'-4" | 15'-10" | 14'-9" | |
| 10" | 23'-2" | 20'-6" | 18'-9" | 17'-6" | |
| 12" | 26'-6" | 23'-6" | 21'-6" | 20'-0" | |
| 14" | 28'-6" | 26'-0" | 23'-7" | 20'-6" | |
| 16" | 32'-7" | 29'-0" | 26'-6" | 23'-6" | |
| 18" | 33'-6" | 31'-6" | 28'-8" | 25'-8" | |
| Slab | Joist | 80 PSF LL/Joist Spacing (ft) | |||
|---|---|---|---|---|---|
| 2' | 3' | 4' | 5' | ||
| 3.5" | 6" | 15'-7" | 13'-10" | 12'-8" | 11'-6" |
| 8" | 19'-3" | 17'-2" | 15'-8" | 14'-3" | |
| 10" | 22'-9" | 20'-2" | 18'-6" | 16'-7" | |
| 12" | 25'-6" | 23'-0" | 20'-7" | 18'-6" | |
| 14" | 28'-10" | 24'-0" | 22'-6" | 20'-3" | |
| 16" | 31'-9" | 28'-1" | 24'-7" | 22'-0" | |
| 18" | 34'-0" | 30'-6" | 26'-6" | 23'-6" | |
| 4.0" | 6" | 15'-4" | 13'-6" | 12'-3" | 11'-0" |
| 8" | 19'-0" | 16'-7" | 15'-4" | 13'-8" | |
| 10" | 22'-3" | 19'-11" | 18'-2" | 16'-6" | |
| 12" | 25'-4" | 22'-7" | 20'-7" | 18'-6" | |
| 14" | 28'-2" | 23'-9" | 22'-0" | 20'-1" | |
| 16" | 31'-6" | 28'-0" | 24'-7" | 21'-9" | |
| 18" | 34'-0" | 30'-6" | 26'-6" | 23'-5" | |
| Slab | Joist | 100 PSF LL/Joist Spacing (ft) | |||
|---|---|---|---|---|---|
| 2' | 3' | 4' | 5' | ||
| 3.5" | 6" | 14'-10" | 13'-6" | 11'-10" | 10'-7" |
| 8" | 18'-10" | 16'-8" | 14'-9" | 13'-3" | |
| 10" | 22'-3" | 19'-8" | 17'-2" | 15'-4" | |
| 12" | 25'-3" | 22'-1" | 19'-2" | 17'-1" | |
| 14" | 28'-2" | 24'-2" | 20'-8" | 18'-6" | |
| 16" | 31'-2" | 25'-5" | 22'-9" | 20'-4" | |
| 18" | 33'-6" | 28'-2" | 24'-7" | 20'-7" | |
| 4.0" | 6" | 15'-0" | 13'-2" | 11'-3" | 10'-2" |
| 8" | 18'-2" | 16'-3" | 14'-2" | 12'-8" | |
| 10" | 22'-0" | 19'-4" | 17'-2" | 15'-4" | |
| 12" | 23'-7" | 22'-2" | 19'-3" | 17'-3" | |
| 14" | 27'-10" | 23'-6" | 20'-5" | 18'-5" | |
| 16" | 30'-8" | 26'-7" | 22'-8" | 20'-5" | |
| 18" | 33'-7" | 28'-5" | 24'-7" | 21'-2" | |
| Slab Topping | Joist Size | 40 PSF LL/Joist Spacing (ft) | 50 PSF LL/Joist Spacing (ft) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 2' | 3' | 4' | 5' | 2' | 3' | 4' | 5' | ||
| 3.5" | 6" | 15'-6" | 13'-8" | 12'-7" | 11'-10" | 15'-3" | 13'-7" | 12'-6" | 11'-7" |
| 8" | 19'-1" | 17'-0" | 15'-7" | 14'-6" | 19'-0" | 16'-9" | 15'-4" | 14'-4" | |
| 10" | 22'-6" | 20'-0" | 18'-3" | 17'-1" | 22'-3" | 19'-8" | 18'-1" | 16'-10" | |
| 12" | 25'-5" | 22'-9" | 20'-10" | 19'-7" | 25'-2" | 22'-7" | 20'-8" | 19'-4" | |
| 14" | 28'-8" | 25'-6" | 23'-3" | 21'-8" | 28'-2" | 25'-3" | 23'-1" | 21'-6" | |
| 16" | 31'-8" | 28'-0" | 25'-6" | 23'-9" | 31'-4" | 27'-7" | 25'-4" | 23'-6" | |
| 18" | 34'-0" | 30'-3" | 27'-8" | 25'-9" | 33'-6" | 30'-1" | 27'-4" | 25'-6" | |
| 4.0" | 6" | 15'-3" | 13'-4" | 12'-3" | 11'-4" | 15'-0" | 13'-4" | 12'-1" | 11'-4" |
| 8" | 18'-7" | 16'-5" | 15'-1" | 14'-1" | 18'-6" | 16'-5" | 15'-0" | 14'-0" | |
| 10" | 22'-0" | 19'-5" | 17'-11" | 16'-7" | 21'-9" | 19'-4" | 17'-8" | 16'-6" | |
| 12" | 25'-1" | 22'-4" | 20'-5" | 19'-1" | 24'-10" | 22'-1" | 20'-2" | 18'-10" | |
| 14" | 28'-6" | 25'-0" | 22'-10" | 21'-5" | 27'-10" | 24'-8" | 22'-8" | 21'-3" | |
| 16" | 31'-0" | 27'-7" | 25'-3" | 23'-7" | 30'-10" | 27'-4" | 25'-1" | 23'-4" | |
| 18" | 33'-8" | 30'-1" | 27'-7" | 25'-7" | 33'-7" | 29'-10" | 27'-4" | 25'-4" | |
| Slab Topping | Joist Size | 80 PSF LL/Joist Spacing (ft) | 100 PSF LL/Joist Spacing (ft) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 2' | 3' | 4' | 5' | 2' | 3' | 4' | 5' | ||
| 3.5" | 6" | 14'-10" | 13'-2" | 12'-1" | 11'-3" | 14'-8" | 13'-0" | 11'-10" | 10'-2" |
| 8" | 18'-4" | 16'-3" | 15'-0" | 14'-0" | 18'-1" | 16'-1" | 14'-7" | 12'-10" | |
| 10" | 21'-8" | 19'-2" | 17'-6" | 16'-1" | 21'-3" | 18'-10" | 17'-2" | 15'-4" | |
| 12" | 24'-7" | 21'-10" | 20'-1" | 18'-5" | 24'-4" | 21'-6" | 19'-3" | 17'-3" | |
| 14" | 27'-5" | 24'-6" | 22'-6" | 20'-3" | 27'-2" | 23'-8" | 21'-3" | 19'-0" | |
| 16" | 30'-6" | 27'-1" | 24'-6" | 22'-0" | 30'-0" | 26'-3" | 23'-1" | 20'-6" | |
| 18" | 33'-2" | 29'-3" | 26'-6" | 23'-7" | 32'-7" | 28'-3" | 24'-7" | 22'-0" | |
| 4.0" | 6" | 14'-6" | 12'-9" | 11'-10" | 11'-0" | 14'-4" | 12'-7" | 11'-4" | 10'-2" |
| 8" | 18'-0" | 16'-0" | 14'-7" | 13'-7" | 17'-6" | 15'-6" | 14'-3" | 12'-10" | |
| 10" | 21'-3" | 18'-10" | 17'-3" | 16'-0" | 21'-0" | 18'-7" | 17'-0" | 15'-4" | |
| 12" | 24'-3" | 21'-6" | 19'-7" | 18'-4" | 23'-10" | 21'-2" | 19'-1" | 17'-3" | |
| 14" | 27'-2" | 24'-1" | 22'-1" | 19'-8" | 26'-8" | 23'-7" | 21'-2" | 19'-0" | |
| 16" | 30'-0" | 26'-6" | 24'-4" | 21'-9" | 29'-7" | 26'-2" | 23'-0" | 20'-6" | |
| 18" | 32'-8" | 29'-1" | 26'-5" | 23'-1" | 32'-2" | 28'-2" | 24'-7" | 22'-2" | |
| Slab | Joist | 40 PSF LL/Joist Spacing (ft) | |||
|---|---|---|---|---|---|
| 2' | 3' | 4' | 5' | ||
| 3.5" | 6" | 15'-6" | 13'-8" | 12'-7" | 11'-10" |
| 8" | 19'-1" | 17'-0" | 15'-7" | 14'-6" | |
| 10" | 22'-6" | 20'-0" | 18'-3" | 17'-1" | |
| 12" | 25'-5" | 22'-9" | 20'-10" | 19'-7" | |
| 14" | 28'-8" | 25'-6" | 23'-3" | 21'-8" | |
| 16" | 31'-8" | 28'-0" | 25'-6" | 23'-9" | |
| 18" | 34'-0" | 30'-3" | 27'-8" | 25'-9" | |
| 4.0" | 6" | 15'-3" | 13'-4" | 12'-3" | 11'-4" |
| 8" | 18'-7" | 16'-5" | 15'-1" | 14'-1" | |
| 10" | 22'-0" | 19'-5" | 17'-11" | 16'-7" | |
| 12" | 25'-1" | 22'-4" | 20'-5" | 19'-1" | |
| 14" | 28'-6" | 25'-0" | 22'-10" | 21'-5" | |
| 16" | 31'-0" | 27'-7" | 25'-3" | 23'-7" | |
| 18" | 33'-8" | 30'-1" | 27'-7" | 25'-7" | |
| Slab | Joist | 50 PSF LL/Joist Spacing (ft) | |||
|---|---|---|---|---|---|
| 2' | 3' | 4' | 5' | ||
| 3.5" | 6" | 15'-3" | 13'-7" | 12'-6" | 11'-7" |
| 8" | 19'-0" | 16'-9" | 15'-4" | 14'-4" | |
| 10" | 22'-3" | 19'-8" | 18'-1" | 16'-10" | |
| 12" | 25'-2" | 22'-7" | 20'-8" | 19'-4" | |
| 14" | 28'-2" | 25'-3" | 23'-1" | 21'-6" | |
| 16" | 31'-4" | 27'-7" | 25'-4" | 23'-6" | |
| 18" | 33'-6" | 30'-1" | 27'-4" | 25'-6" | |
| 4.0" | 6" | 15'-0" | 13'-4" | 12'-1" | 11'-4" |
| 8" | 18'-6" | 16'-5" | 15'-0" | 14'-0" | |
| 10" | 21'-9" | 19'-4" | 17'-8" | 16'-6" | |
| 12" | 24'-10" | 21'-1" | 20'-2" | 18'-10" | |
| 14" | 27'-10" | 24'-8" | 22'-8" | 21'-3" | |
| 16" | 30'-10" | 27'-4" | 25'-1" | 23'-4" | |
| 18" | 33'-7" | 29'-10" | 27'-4" | 25'-4" | |
| Slab | Joist | 80 PSF LL/Joist Spacing (ft) | |||
|---|---|---|---|---|---|
| 2' | 3' | 4' | 5' | ||
| 3.5" | 6" | 14'-10" | 13'-2" | 12'-1" | 11'-3" |
| 8" | 18'-4" | 16'-3" | 15'-0" | 14'-0" | |
| 10" | 21'-8" | 19'-2" | 17'-6" | 16'-1" | |
| 12" | 24'-7" | 21'-10" | 20'-1" | 18'-5" | |
| 14" | 27'-5" | 24'-6" | 22'-6" | 20'-3" | |
| 16" | 30'-6" | 27'-1" | 24'-6" | 22'-0" | |
| 18" | 33'-2" | 29'-3" | 26'-6" | 23'-7" | |
| 4.0" | 6" | 14'-6" | 12'-9" | 11'-10" | 11'-0" |
| 8" | 18'-0" | 16'-0" | 14'-7" | 13'-7" | |
| 10" | 21'-3" | 18'-10" | 17'-3" | 16'-0" | |
| 12" | 24'-3" | 21'-6" | 19'-7" | 18'-4" | |
| 14" | 27'-2" | 24'-1" | 22'-1" | 19'-8" | |
| 16" | 30'-0" | 26'-6" | 24'-4" | 21'-9" | |
| 18" | 32'-8" | 29'-1" | 26'-5" | 23'-1" | |
| Slab | Joist | 100 PSF LL/Joist Spacing (ft) | |||
|---|---|---|---|---|---|
| 2' | 3' | 4' | 5' | ||
| 3.5" | 6" | 14'-8" | 13'-0" | 11'-10" | 10'-2" |
| 8" | 18'-1" | 16'-1" | 14'-7" | 12'-10" | |
| 10" | 21'-3" | 18'-10" | 17'-2" | 15'-4" | |
| 12" | 24'-4" | 21'-6" | 19'-3" | 17'-3" | |
| 14" | 27'-2" | 23'-8" | 21'-3" | 19'-0" | |
| 16" | 30'-0" | 26'-3" | 23'-1" | 20'-6" | |
| 18" | 32'-7" | 28'-3" | 24'-7" | 22'-0" | |
| 4.0" | 6" | 14'-4" | 12'-7" | 11'-4" | 10'-2" |
| 8" | 17'-6" | 15'-6" | 14'-3" | 12'-10" | |
| 10" | 21'-0" | 18'-7" | 17'-0" | 15'-4" | |
| 12" | 23'-10" | 21'-2" | 19'-1" | 17'-3" | |
| 14" | 26'-8" | 23'-7" | 21'-2" | 19'-0" | |
| 16" | 29'-7" | 26'-2" | 23'-0" | 20'-6" | |
| 18" | 32'-2" | 28'-2" | 24'-7" | 22'-2" | |
Structural Design Conditions
- Tables are based on a SDL of 10 PSF and Construction Live Load of 20 PSF
- Concrete compressive strength 4000 psi
- Joists are rolled from 2.97BMT material (SS50-G90 Galvanized steel)
- First joist hole to be min. 4’ from joist end
- Joists are precambered 0.015" per 10' length
- Vibration not considered for span tables
- Dead loads include weight of concrete
- No propping required during slab placement
- Capacities per ANSI/AISI S100-12 LRFD
Concrete Properties
- Minimum 3500 PSI
Loading
- Installed Floor Dead Load is 50 PSF (with 4" topping)
- Suspended Slab over ‘Super Floor’ Joists
- 3.5” thick slab U.N.O.
- 6 - 6, 4.0 x 4.0 WWM, ASTM A1064, GRADE 70
- #4 Rebar Beam and Slab Edges TYP
General Notes
- No point load > 3000 lbs on Super Floor slab
- Span Tables are for estimating only
- Stairs, columns, and beams by others
- Concrete Beams poured before Super Floor install
Resources
System Information and Resources
Load/Span Tables
Explore detailed span and load data to help you design with confidence. See how Super Floor performs across different joist sizes, spacings, and slab depths.
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Connection Details
From joist profiles to connection details, these PDF and DWG files give you the technical info you need to plan and build your project. They're built for engineers, architects, and contractors who want to get the details right from the start.
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