Type 2 Road Base Calculator for Playground Construction

Type 2 Road Base Calculator

Includes 95% compaction factor

This calculator includes: - 95% compaction factor automatically applied - Two calculation methods: dimensions or square footage - Depth selection from 1 to 14 inches - Clear visual feedback and error handling The calculation uses the formula: $$ \text{Cubic Yards} = \frac{\text{Square Feet} \times \text{Depth (inches)} \times \frac{1}{0.95}}{12 \text{ inches/ft} \times 27 \text{ cu ft/cu yd}} $$ Key features: - Automatic compaction factor adjustment - Input validation - Responsive design - Clear visual hierarchy - Professional styling - Informative notes about compaction - Results rounded to 2 decimal places The interface accounts for the 95% compaction by multiplying the volume by approximately 1.053 (1/0.95) to ensure enough material is ordered to achieve the desired compacted depth.

Proper base preparation is essential for playground longevity and safety. Type 2 road base provides a stable foundation when properly installed and compacted. This calculator helps determine the volume needed for your project, accounting for the required 95% compaction rate.

Installation Requirements

Minimum Specifications

  • 4-inch minimum depth after compaction
  • 95% compaction requirement
  • Installation in 2-inch lifts
  • Proper moisture content during compaction
  • Grading for positive drainage

Compaction Guidelines

Each lift must be installed and compacted separately:

  • Maximum 2-inch loose material per lift
  • Maintain optimal moisture content
  • Use appropriate compaction equipment
  • Test compaction levels between lifts
  • Achieve 95% compaction before next lift

Using the Calculator

The calculator accounts for:

  • Required 95% compaction factor
  • Area dimensions
  • Specified depth
  • Multiple lift requirements

Installation Process

Site Preparation

  • Remove existing soil to proper depth
  • Grade subgrade for drainage
  • Install geotextile fabric if required
  • Mark final grade elevations

Base Installation

  • Spread material in 2-inch lifts
  • Add water to achieve optimal moisture
  • Compact each lift thoroughly
  • Test compaction before proceeding
  • Grade final lift to specified slope

Professional Tips

Material Handling

  • Store material on hard, clean surface
  • Protect from contamination
  • Maintain consistent moisture
  • Avoid segregation during placement

Quality Control

  • Test material gradation
  • Monitor moisture content
  • Verify compaction rates
  • Document test results
  • Maintain consistent depth

Common Applications

  • Equipment zones
  • Access paths
  • Border areas
  • Transition zones
  • Drainage areas

Important Considerations

Drainage Requirements

  • Minimum 1% slope from center
  • Proper perimeter drainage
  • Surface water management
  • Connection to existing systems

Weather Factors

  • Avoid installation during rain
  • Protect from freezing
  • Maintain moisture in hot weather
  • Allow for proper curing

The calculator above will help determine the exact amount of Type 2 road base needed for your project, factoring in compaction requirements and lift specifications to ensure a stable, long-lasting playground foundation