03Internship
Concrete Material Calculator
Construction Planning Tool
Flutter mobile app for calculating concrete material requirements with cost estimation and PDF report generation.
- Company
- Trianz
- Role
- Mobile Developer
- Duration
- 1 month
- Category
- Web Development
/images/work/concrete-calculator/cover.webp
Full-bleed project cover. Wide editorial crop of the interface or its subject matter.
01Impact
By the numbers.
1000+
Downloads
98%
Accuracy
5min
Avg Calculation
4.7★
User Rating
02Overview
The brief.
Created a practical construction tool that helps contractors and engineers accurately calculate material quantities and costs for concrete projects.
Problem
Construction professionals needed quick, accurate calculations for concrete materials without complex spreadsheets.
Solution
Built intuitive mobile app with pre-configured formulas, cost estimation, and professional PDF report generation.
03Features
What it does.
Material Calculations
Cement, sand, aggregate quantities with multiple mix ratios
- Flutter
- Dart Math
Cost Estimation
Real-time pricing with material rate customization
- Local Storage
- Calculations
PDF Reports
Professional project estimates with branding
- PDF Generation
- Flutter PDF
Unit Conversion
Support for metric and imperial units
- Custom Converters
04Architecture
How it's built.
frontend
- Flutter
- Material Design
- Responsive Layouts
logic
- Calculation Engine
- Formula Library
- Validation
storage
- Shared Preferences
- SQLite
- File System
output
- PDF Generation
- Email Sharing
- Print Support
05Challenges
What was hard.
Complex calculation validation
Built comprehensive test suite with edge case coverage
Cross-platform consistency
Used Flutter's widget system for pixel-perfect rendering
06Gallery
A closer look.
/images/work/concrete-calculator/01.webp
Interface detail. Crop tight on one screen or one interaction — not a full-page screenshot shrunk down.
/images/work/concrete-calculator/02.webp
Interface detail. Crop tight on one screen or one interaction — not a full-page screenshot shrunk down.
/images/work/concrete-calculator/03.webp
Interface detail. Crop tight on one screen or one interaction — not a full-page screenshot shrunk down.
/images/work/concrete-calculator/04.webp
Interface detail. Crop tight on one screen or one interaction — not a full-page screenshot shrunk down.
07Stack
Built with.
- Flutter
- Dart
- PDF Generation
- SQLite
- Shared Preferences
Outcomes
- Downloaded by 1000+ construction professionals
- Achieved 98% calculation accuracy
- Average calculation time reduced to 5 minutes
- Maintained 4.7-star user rating