| Standard | ASTM | EN (European) |
|---|---|---|
| Concrete Specifications | ASTM C94 - Ready-Mix Concrete | EN 206 - Concrete |
| Compressive Strength | ASTM C39 - 28-day strength | EN 12390-3 - 28-day and 7-day strength |
| Slump Testing | ASTM C143 - 4" target | EN 12350-2 - 30-180mm range |
| Air Content | ASTM C173 - Volume method | EN 12350-7 - Pressure method |
| Concrete Construction | ACI 301 - Specifications for Concrete | EN 13670 - Execution of concrete structures |
| Durability Focus | Standard durability requirements | Enhanced durability with environmental exposure classes |
| Standard | ASTM | EN (European) |
|---|---|---|
| Reinforcing Steel | ASTM A615 - Carbon Steel Bars | EN 10080 - Steel for the reinforcement of concrete |
| Yield Strength | 60 ksi (Grade 60) typical | 500 MPa typical |
| Testing Frequency | 1 test per 40 tons | 1 test per 30 tons |
| Mill Test Reports | Required for safety-critical | Required for all reinforcing steel |
| Standard | ASTM/US | EN (European) |
|---|---|---|
| Structural Steel Design | AISC 360 - Steel Construction Manual | EN 1993-1-1 - Eurocode 3 |
| Concrete Design | ACI 318 - Building Code | EN 1992-1-1 - Eurocode 2 |
| Load Factors | LRFD: 1.4 dead, 1.6 live | Similar but slightly different coefficients |
| Safety Factor Approach | Limit State Design | Limit State Design (similar methodology) |
| Activity | ASTM | EN |
|---|---|---|
| Ultrasonic Concrete Testing | ASTM C597 | EN 12504-4 |
| Core Sampling | ASTM C42 | EN 12504-1 |
| Surface Hardness | ASTM C805 | EN 12504-2 |
| Visual Inspection | ASTM C823 | EN 13791 |
ASTM (US Focus): Performance-based, emphasis on material properties, simpler testing protocols, commonly used in North America
EN (European Focus): More prescriptive, emphasis on durability and environmental exposure, rigorous testing requirements, used in Europe and internationally
Practical Impact: European standards typically more stringent, especially for durability and long-term performance. US standards focus on initial strength properties.