Width of Road given Height for Parabolic Shape Camber Calculator

Pavement Width Formula:

\[ B = \frac{2 \times X^2}{H_c \times h_{Elevation}} \]

Distance from Center of Camber:

Height of Camber:

Elevation Difference:

Tolerance:

Pavement Width (m):

1. What is Pavement Width Calculation for Parabolic Camber?

Definition: This calculator determines the required pavement width based on the parabolic camber profile of a road.

Purpose: It helps civil engineers and road designers ensure proper drainage and cross-slope in road construction.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ B = \frac{2 \times X^2}{H_c \times h_{Elevation}} \]

Where:

\( B \) — Pavement width (meters)
\( X \) — Distance from center of camber (meters)
\( H_c \) — Height of camber (meters)
\( h_{Elevation} \) — Elevation difference at ends (meters)

Explanation: The formula calculates the parabolic curve needed for proper road drainage based on camber height and elevation difference.

3. Importance of Pavement Width Calculation

Details: Accurate width calculation ensures proper water drainage, vehicle safety, and compliance with road design standards.

4. Using the Calculator

Tips: Enter the distance from center, camber height, elevation difference, and tolerance percentage. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a parabolic camber?
A: A parabolic camber is a curved cross-section of a road surface that follows a parabolic shape for optimal drainage.

Q2: Why include a tolerance percentage?
A: The tolerance accounts for construction variations and material settling (±5% is typical).

Q3: How is elevation difference measured?
A: It's the vertical difference between the road center and edge at a given cross-section.

Q4: What's a typical camber height for roads?
A: Typically 1-2% of the pavement width (e.g., 0.15m height for a 7.5m wide road).

Q5: When would I adjust the tolerance?
A: For precision work or when using materials with higher/lower compaction characteristics.