CSA G30.18Metric
10M Rebar (Canadian Standard Metric)
Authoritative dimensional properties, unit weight, cross-sectional area, spacing tables, standard hook geometries, and ACI 318-19 tension development length for structural concrete design.
Nominal Diameter
0.445″
11.3 mm
Nominal Area (Ab)
0.155 in²
100 mm²
Unit Weight
0.527 lb/ft
0.785 kg/m
90° Standard Hook
5.3″ tail
Pin: 2.67″ (68 mm)
Cross-Sectional & Geometric PropertiesDual US & SI Units
| Bar Designation | 10M | Code Standard | CSA G30.18 |
| Nominal Diameter (db) | 0.445 in | Metric Diameter | 11.3 mm |
| Cross-Sectional Area (Ab) | 0.155 in² | Metric Area | 100 mm² |
| Linear Weight | 0.527 lb/ft | Metric Mass | 0.785 kg/m |
| Nominal Perimeter | 1.398 in | Metric Perimeter | 35.5 mm |
| Minimum Clear Spacing | max(1.0″, 0.445″) | ACI Provision | ACI 318-19 §25.2.1 |
ACI 318-19 Standard Hook Geometry (Table 25.3.1)
| Hook Type | Min. Inside Bend Pin | Extension Length (US) | Extension Length (SI) |
|---|---|---|---|
| 90° Standard Hook | 2.67″ (68 mm) | 5.3″ (12db) | 136 mm |
| 180° Standard Hook | 2.67″ (68 mm) | 2.5″ (max(4db, 2.5″)) | 64 mm |
CAD Cross-Section SchematicCSA G30.18
Nominal Linear Weight0.527 lb/ft (0.785 kg/m)
Common Structural Applications
- ›Standard stirrup and tie reinforcement in Canadian commercial construction
- ›Slab-on-grade crack control and residential foundation walls
- ›Footing dowels for low-rise residential structures
Engineering Detailing Note
Convenient 100 mm² nominal area simplifies manual Canadian CSA A23.3 flexural calculations.
10M Rebar Spacing Table (As / Unit Width)
Area of longitudinal reinforcement provided for slabs, walls, and footing mats at given on-center spacings.
Metric Spacings (mm² of steel per linear metre of slab/wall)
| 75 mm o.c. | 100 mm o.c. | 125 mm o.c. | 150 mm o.c. | 175 mm o.c. | 200 mm o.c. | 250 mm o.c. | 300 mm o.c. | 400 mm o.c. |
|---|---|---|---|---|---|---|---|---|
| 1333mm²/m | 1000mm²/m | 800mm²/m | 667mm²/m | 571mm²/m | 500mm²/m | 400mm²/m | 333mm²/m | 250mm²/m |
ACI 318-19 Tension Development Length (ld)
Calculated using ACI 318-19 Section 25.4.2.3 simplified method for Grade 60 (420 MPa) deformed bars in normal-weight concrete with clear spacing ≥ db and clear cover ≥ db.
| Concrete Strength (f'c) | Bottom Bars (ld) [ψt = 1.0] | Top Bars (ld) [ψt = 1.3] | Governing Provision | Minimum Limit |
|---|---|---|---|---|
| 21 MPa (~3045 psi) | 493 mm | 641 mm | CSA A23.3 / ACI 318M | ld ≥ 300 mm |
| 28 MPa (~4060 psi) | 427 mm | 555 mm | CSA A23.3 / ACI 318M | ld ≥ 300 mm |
| 35 MPa (~5075 psi) | 382 mm | 497 mm | CSA A23.3 / ACI 318M | ld ≥ 300 mm |
| 42 MPa (~6090 psi) | 349 mm | 453 mm | CSA A23.3 / ACI 318M | ld ≥ 300 mm |
Integrated Calculation Engine
Design Reinforcement with 10M in AXIS
Run instant ACI 318-19 beam flexure, shear stirrup spacing, column P-M interaction, and development length checks with full KaTeX step-by-step audit logs.
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