1. What Is Net Explosive Weight?

Net Explosive Weight (NEW) represents the equivalent mass of TNT that would produce the same explosive effect. It's calculated by multiplying the actual weight of an explosive material by its specific explosive factor relative to TNT.

2. How Does The Calculator Work?

The calculator uses the NEW formula:

Where:

• \( Weight \) — Mass of the explosive material (kg)
• \( Explosive Factor \) — Relative effectiveness factor compared to TNT (decimal)

Explanation: The explosive factor represents how much more or less powerful the substance is compared to TNT, which has a factor of 1.0.

3. Importance Of NEW Calculation

Details: Calculating NEW is crucial for safety assessments, blast effect predictions, storage requirements, and regulatory compliance in explosive handling and transportation.

4. Using The Calculator

Tips: Enter the weight in kilograms and the explosive factor as a decimal value. Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is TNT equivalence?
A: TNT equivalence is a measure of the energy released in an explosion, expressed as the mass of TNT that would produce the same energy release.

Q2: How is explosive factor determined?
A: Explosive factors are determined through experimental testing comparing the blast effects of different explosives to TNT under controlled conditions.

Q3: What are typical explosive factors for common materials?
A: TNT = 1.0, C-4 = 1.34, ANFO = 0.8, Dynamite = 1.2-1.6 (varies by type).

Q4: Why use NEW instead of actual weight?
A: NEW provides a standardized way to compare different explosives and assess potential blast effects regardless of the specific explosive material.

Q5: Are there limitations to NEW calculations?
A: Yes, NEW provides an estimate and doesn't account for all variables like confinement, initiation method, or environmental conditions that affect actual blast effects.