Frequently Asked Questions - Advanced Bituminous Calculator

The Advanced Bituminous Calculator is a comprehensive web-based tool designed to assist engineers, contractors, and planners in estimating costs and quantities for bituminous road construction projects. It aligns with the Department of Roads (DoR) Road and Bridge standards, ensuring calculations reflect industry norms. The calculator handles:
  • Material Quantity: Calculates required materials and their quantities based on compacted volume and density.
  • Material Costs: Calculates total material costs by entering the per unit material cost at site as a whole or in disaggregated form like per unit material cost at source, transportation cost, driver wages, and fuel costs, etc.
  • Per Unit Cost at Site: Calculates per unit (e.g., kg, m³) costs at site by providing per unit cost at source, tipper rent per day, driver cost per day, fuel cost, distance (km), and mileage.
  • Select Best Tipper-truck: Calculates the best and cost-friendly tipper-truck (6-wheelers or 10-wheelers or any other) for material transportation by comparing the per unit cost at site from both vehicles.
  • Select Best Material Sources: If two sources are at different distances and different costs at sources, it calculates and recommends the best cost-friendly sources.
  • Production Costs: Calculates the total cost of work including material costs, transportation costs, vehicles and equipment costs, skilled and unskilled worker costs, and all from purchasing material to producing, laying, and finalizing bituminous work.
It provides detailed tables and comparisons to optimize project planning and budgeting.
This calculator is crucial for:
  • Cost Accuracy: Prevents budget under/over-estimation with precise calculations
  • Compliance: Adheres to DoR standards for regulatory compliance
  • Decision-Making: Compares material source costs for economical choices
  • Resource Planning: Estimates material/equipment needs accurately
  • Time Efficiency: Automates complex, error-prone manual calculations
Prevents project delays, cost overruns, and compliance issues.
The calculator offers comprehensive functionality:
  1. Material Estimation: Calculate bitumen, aggregates, sand quantities
  2. Cost Calculation:
    • Use Calculate Material Cost per m³
    • Input direct unit costs
  3. Production Cost Analysis:
    • Input equipment rental costs
    • Get comprehensive production costs
Three main functional sections:
  1. Material Quantity Estimation:
    • Input compacted volume (BM/DBM)
    • Calculate bitumen (kg), aggregates (m³)
  2. Material Cost Calculation:
    • Enter source unit costs
    • Input transport parameters
  3. Production Cost Analysis:
    • Input equipment rates/hours
    • Calculate total costs
Real-time results update automatically.

Material Calculations

  • Adjusts for compaction factors
  • Displays grand totals
  • Multiple material types supported

Transportation Analysis

  • Compare multiple source locations
  • Detailed cost breakdowns
  • Fuel efficiency calculations

Production Costs

  • Equipment cost analysis
  • Toggleable sections
  • Custom item addition

User Experience

  • Intuitive interface
  • Clear visual indicators
  • Responsive design

Compliance Features

  • DoR standards integration
  • Gradation tables
  • Specification references
Follow these steps to calculate transportation costs:
  1. Click "Calculate Material Cost Per m³" to expand the section
  2. Enter values in the appropriate fields:
    • Material Cost per m³ at Source: Direct input from supplier quotes
    • Transportation Parameters:
      • Tipper specifications (capacity, rental rate)
      • Driver costs (daily wage)
      • Trip details (distance, expected trips per day)
      • Fuel parameters (price, vehicle mileage)
  3. Click "Calculate" to view detailed results

Calculation Formulas:

// Tipper Rent per m³ Tipper Rent per m³ = Tipper Rent per Day / (Total Trips × Tipper Capacity) // Driver Cost per m³ Driver Cost per m³ = Driver Cost per Day / (Total Trips × Tipper Capacity) // Fuel Cost per m³ Fuel Cost per m³ = (Round Trip Length × Diesel Price) / (Mileage × Tipper Capacity)

Example Calculation:

Input Values: - One Round Trip Length = 20 km - Diesel Price = 150 Rs/L - Mileage = 2 km/L - Tipper Capacity = 7.5 m³ Calculation: Fuel Cost per m³ = (20 × 150) / (2 × 7.5) = 200.00 Rs/m³
The calculator is built using modern web technologies:
  • HTML5: Semantic structure for accessibility and SEO
  • CSS3: Responsive design with modern styling
  • JavaScript: Dynamic calculations and interactive elements

Key Technical Features:

  • Modular code architecture
  • Real-time calculation updates
  • Form validation
  • Dynamic content generation
The calculator strictly adheres to the Government of Nepal, Department of Roads, STANDARD SPECIFICATIONS FOR Road and Bridge Works, including:
  • Material quality specifications
  • Mix design proportions
  • Construction methodologies
  • Testing requirements
  • Quality control measures

The calculator incorporates the latest amendments (2075) to ensure compliance with current regulations and best practices in road construction.
Yes, the calculator offers several customization options:
  • Material Specifications:
    • Adjust stone aggregate percentages
    • Modify bulk density values
    • Customize bitumen content
  • Production Cost Items:
    • Add custom equipment items
    • Include additional tools
    • Modify existing cost items
  • Transportation Parameters:
    • Add multiple source locations
    • Customize vehicle specifications
    • Adjust fuel efficiency factors

Use the 'Add New Item' button in the Production Cost section to include additional equipment or tools.
The calculator provides a comprehensive comparison tool:
  1. Enter Basic Project Parameters:
    • Input any value in the Compacted Quantity field
    • Click Calculate to expand results
  2. Access Cost Comparison:
    • Click Calculate Material Cost per m³
    • Enter source-specific parameters for each crusher plant
  3. Input Transportation Details:
    • Material costs at each crusher
    • Round trip distances
    • Tipper Truck Capacity
    • Fuel Cost and mileage per liter
  4. Analyze Results:
    • View detailed cost breakdowns
    • See which source is more economical
    • Observe the per unit material cost at site to determine which tipper-truck is cost-friendly if the source is the same.
    • Make informed sourcing decisions

The system will clearly indicate which crusher plant costs more per cubic meter, helping you optimize material sourcing and maximize cost savings on your project.
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