Common Burnt Clay Brick Testing
(IS 1077 Brick Testing)

Complete mechanical and physical testing of common burnt clay bricks as per IS 1077 — covering compressive strength, water absorption, efflorescence and dimensional tolerance for structural acceptance.

Overview

What is the Common Burnt Clay Brick Testing?

Common Burnt Clay Brick Testing verifies that bricks meet the mandatory requirements of IS 1077:1992 for use in load-bearing and non-load-bearing masonry construction. Key tests include compressive strength (Class designation), water absorption (≤20%), efflorescence rating and dimensional tolerances.

At Global Lab, brick testing covers the complete IS 1077 test suite including compressive strength (Classes 5 through 35), water absorption by 24-hour cold water immersion and 5-hour boiling, efflorescence assessment and dimensional checks. Results determine the brick class designation and suitability for structural masonry per IS 1905.

IS 1077 Class Designation

Bricks classified as Class 5 to 35 based on measured compressive strength.

Compressive Strength Testing

Individual brick compressive strength tested in NABL-calibrated CTM.

Water Absorption Test

24-hour cold water and 5-hour boiling absorption per IS 3495 Part 2.

Efflorescence Assessment

Visual rating: nil, slight, moderate, heavy or serious per IS 3495 Part 3.

NABL Certified Reports

All results on NABL-accredited letterhead with IS 1077 compliance statement.

Dimensional Tolerance Check

Length, width and height tolerances per IS 1077 Table 1.

Test in Action

Common Burnt Clay Brick Testing — Site Images

Brick Specimen Preparation for Compression

Brick Compressive Strength Test in CTM

Water Absorption Test — 24 Hour Immersion

Test Procedure

How the Common Burnt Clay Brick Testing is Conducted

1

Sample Collection

Minimum 20 bricks selected per IS 5454 sampling procedure from each consignment.
2

Dimensional Measurement

Length, width and height of all 20 bricks measured. Mean and range checked against IS 1077 tolerances.
3

Specimen Preparation for Compression

5 bricks filled with cement mortar on frog side, cured 24 hours. Both faces ground flat and parallel.
4

Compressive Strength Test

Prepared bricks tested in CTM at 14 N/mm²/min per IS 3495 Part 1.
5

Water Absorption & Efflorescence

5 bricks tested for 24-hr absorption. 5 bricks tested for efflorescence per IS 3495 Part 3. NABL report within 14 days.

Standards & Specifications

Applicable Test Standards

Standard	Title	Scope	Type
IS 1077:1992	Common Burnt Clay Building Bricks — Specification	Brick Specification	Indian Standard
IS 3495	Methods of Tests of Burnt Clay Building Bricks (Parts 1–4)	Brick Testing	Indian Standard
IS 1905	Code of Practice for Structural Use of Unreinforced Masonry	Masonry Design	Indian Standard
IS 5454	Method for Sampling of Clay Building Bricks	Sampling	Indian Standard

Applications

Where is the CAPO Test Used?

Incoming quality control of brick consignments at construction sites

Procurement acceptance testing for large masonry building contracts

Government housing project brick quality verification

Load-bearing masonry structural design strength verification

Third-party quality audit for brick manufacturer quality certification

Assessment of existing masonry for renovation and structural assessment

Why Choose Global Lab

Our Advantages

NABL Accredited ReportsLegally valid IS 1077 compliance certificates for all procurement requirements.

Complete IS 3495 Test SuiteCompressive strength, water absorption, efflorescence and dimensions in one report.

High Volume TestingCapable of testing large consignment samples rapidly for construction QC.

Autovity Digital ReportsAccess all brick test data and compliance records digitally.

Fast 14-Day ReportComplete IS 1077 test suite reported within 14 days.

Pan-India CoverageSampling and testing across 7 lab locations for all regions.

Common Burnt Clay Brick Testing(IS 1077 Brick Testing)