Properties of Reinforcing steel
The tables below show the design properties for common canadian and american reinforcing bar sizes
Canadian Bars
These are the properties of typical Canadian bars.
American Bars
These are the properties of typical American bars.
Weld size to develop bars
These are minimum fillet weld and plate sizes to develop 60ksi rebar in a butt weld
| Bar Size | Min. Weld Size | Min. Plate thk |
|---|---|---|
| #3 | 1/4" (6mm) | 1/4" (6mm) |
| #4 | 5/16" (8mm) | 1/4" (6mm) |
| #5 | 3/8" (10mm) | 1/4" (6mm) |
| #6 | 7/16" (12mm) | 5/16" (8mm) |
| #7 | 1/2" (14mm) | 3/8" (10mm) |
| #8 | 9/16" (16mm) | 3/8" (10mm) |
| #9 | 5/8" (16mm) | 7/16" (12mm) |
| #10 | 11/16" (18mm) | 1/2" (14mm) |
| #11 | 3/4" (20mm) | 9/16" (16mm) |
Standard Hook Lengths
Dimensions of standard 90 hooks on Canadian bars in 35 MPa concrete.
Standard detailing bar lengths
These are efficient lengths to use for detailing in Canada, to minimize wastage on standard mill length of rebar.
| Metric Length (mm) | US Length (in) |
|---|---|
| 18000 | 59'-1" |
| 12000 | 39'-4" |
| 9000 | 29'-6" |
| 8000 | 26'-3" |
| 7500 | 24'-7" |
| 7000 | 22'-11" |
| 6500 | 21'-4" |
| 6000 | 19'-8" |
| 5500 | 18'-0" |
| 5000 | 16'-5" |
| 4800 | 15'-9" |
| 4700 | 15'-5" |
| 4500 | 14'-9" |
| 4200 | 13'-9" |
| 4000 | 13'-1" |
| 3800 | 12'-6" |
| 3600 | 11'-9" |
| 3200 | 10'-6" |
| 3000 | 9'-10" |
| 2750 | 9'-0" |
| 2571 | 8'-5" |
| 2400 | 7'-10" |
| 2250 | 7'-5" |
| 2000 | 6'-7" |
| 1800 | 5'-11" |
| 1626 | 5'-4" |
| 1500 | 4'-11" |
| 1200 | 3'-11" |
| 1000 | 3'-3" |
Density of reinforcing steel
ρ = 0.2833 lb/in3 = 489.6 lb/ft3
To calculate weight in lb/ft, multiply bar area (in2) by 3.4.
Example: for #5, 0.31in2 x 3.4 = 1.05lb/ft