Brick/Concrete Compressive Strength Calculator

by
🧱 Civil Engineering Tool
Compressive Strength
Calculator
Brick · Concrete · Block — IS 516 / IS 3495 Compliant
Input Values
⚠️ Please fill all required fields with valid positive values.
Input Values
⚠️ Please fill all required fields with valid positive values.
Brick Compressive Strength — IS 1077
As per IS 1077 (Common Burnt Clay Building Bricks) — Minimum compressive strength for different grades:
Grade Min. Strength (N/mm²) Min. Strength (kgf/cm²) Suitable Use
Grade 3.53.5~35.7Non-load bearing partition walls
Grade 5.05.0~51.0General masonry (light loads)
Grade 7.57.5~76.5Load-bearing walls, ground floor
Grade 1010.0~102.0Heavy load bearing masonry
Grade 12.512.5~127.5Industrial / high-rise construction
Grade 15+≥ 15.0≥ 153.0Special / facing bricks
Concrete Grade — IS 456
Characteristic compressive strength (fck) at 28 days — cube specimen:
Grade fck (N/mm²) Use Case
M1010Plain cement concrete (PCC), leveling
M1515RCC (minimum for footings, slabs)
M2020General RCC construction
M2525Slabs, beams, columns
M3030Bridges, high-rise columns
M35–M8035–80+High-performance / prestressed concrete
Formula Used
fc = P ÷ A
Where P = Compressive Load (N), A = Cross-sectional Area (mm²)
For cylinders: apply correction factor 0.8 to convert to equivalent cube strength (IS 516).
📖
Reference Standards:
IS 3495 — Testing of Burnt Clay Bricks
IS 516 — Method of Tests for Strength of Concrete
IS 1077 — Specification for Bricks
IS 456 — Plain & Reinforced Concrete Code of Practice
Compressive Strength Calculator · IS 516 / IS 3495 / IS 1077 / IS 456 · For Educational & Reference Use

Leave a Comment