1. What is Shear Carried By Concrete?

Shear Carried By Concrete (Vc) represents the shear strength provided by the concrete itself in a structural member without considering the contribution of shear reinforcement. It is a fundamental parameter in reinforced concrete design.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( f'_c \) — Concrete compressive strength (MPa)
• \( b \) — Width of the beam (mm)
• \( d \) — Effective depth of the beam (mm)

Explanation: This formula calculates the shear capacity of concrete based on the material strength and cross-sectional dimensions of the structural member.

3. Importance of Shear Calculation

Details: Accurate shear calculation is crucial for ensuring structural safety and preventing shear failure, which can be sudden and catastrophic in reinforced concrete structures.

4. Using the Calculator

Tips: Enter concrete compressive strength in MPa, width and effective depth in mm. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the significance of the 1000 divisor?
A: The divisor 1000 converts the result from N to kN for more convenient engineering units.

Q2: When is shear reinforcement required?
A: Shear reinforcement is required when the applied shear force exceeds the shear capacity of the concrete (Vc).

Q3: What are typical values for concrete compressive strength?
A: Typical values range from 20-40 MPa for normal strength concrete, though higher strengths are possible with special mixes.

Q4: Are there limitations to this formula?
A: This simplified formula is generally conservative. More detailed codes may include additional factors for size effect, axial load, and other parameters.

Q5: How does effective depth affect shear capacity?
A: Shear capacity increases linearly with effective depth, as deeper sections provide more concrete area to resist shear forces.