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.

Name	Diameter (in)	Area (in²)
10M	0.39	0.155
15M	0.59	0.31
20M	0.79	0.465
25M	0.98	0.775
30M	1.18	1.085
35M	1.38	1.55
45M	1.77	2.325
55M	2.17	3.875

American Bars

These are the properties of typical American bars.

Name	Diameter (in)	Area (in²)
#3	0.38	0.110
#4	0.5	0.200
#5	0.63	0.310
#6	0.75	0.440
#7	0.88	0.600
#8	1	0.790
#9	1.13	1.00
#10	1.27	1.27
#11	1.41	1.56
#14	1.69	2.25
#18	2.26	4.00

Weld size to develop bars

These are minimum fillet weld and plate sizes to develop 60ksi rebar in a butt weld

rebar butt weld

Bar Size	Min. Weld Size, in	Min. Plate thk, in
#3	1/4	1/4
#4	5/16	1/4
#5	3/8	1/4
#6	7/16	5/16
#7	1/2	3/8
#8	9/16	3/8
#9	5/8	7/16
#10	11/16	1/2
#11	3/4	9/16

Density of reinforcing steel

ρ = 0.2833 lb/in³ = 489.6 lb/ft³

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"

Standard Hook Lengths

These are the dimensions of standard 90deg hooks on Canadian bars in 35MPa concrete.

Bar	L_DH (in)	Tail (in)
10M	6.7	8
15M	10.0	10
20M	13.3	12
25M	16.6	16
30M	20.0	20
35M	23.3	24