Specification For Perforated Burnt Clay Building Bricks (IS-2222-1991) Suryakanta | April 22, 2014 | Brick, Materials | No Comments General Quality Bricks shall be free from cracks and flaws and nodules of free lime. Bricks shall have smooth rectangular faces with sharp corners Bricks shall be of uniform in colour and texture. The area of perforation shall be in between 30% to 45% of the total area of the corresponding face of the bricks. The shorter side of the perforation shall be less than 20 mm in case of rectangular perforations and less than 25 mm diameter in case of circular perforations. Area of each perforation shall not exceed 500 mm2. Thickness of any shell shall not be less than 15 mm and that of any web not less than 10 mm. Perforated Clay Bricks Dimensional Specification Brick Type Length (L), mm Width (W), mm Height (H), mm Modular 190 90 90 Non-Modular 230 110 70 Physical Requirements Compressive Strength Average compressive strength shall not be less than 7 N/mm2 on net area. Water Absorption Shall not be more than 20% by weight Efflorescence Shall have a rating of efflorescence not more than ‘slight’ Warpage Average warpage shall not exceed 3% Share this:EmailPrintMore Tags:Brick Specification Related Posts CRAZING ON CONCRETE SURFACE – WHAT, WHY & HOW? 2 Comments | Mar 3, 2015 HOW MUCH AGGREGATE SAMPLE SHOULD WE COLLECT? 1 Comment | Jan 6, 2015 BULK DENSITY OF BRICKS 2 Comments | May 9, 2013 HOW TO STORE TIMBER ON SITE? No Comments | Oct 28, 2014 About The Author Suryakanta Geotechnical-Material Engineer. You can connect me on Google +. To know more about me just visit AboutMe Add a Comment Cancel reply Your email address will not be published. Required fields are marked *Comment:* Notify me of follow-up comments via e-mail address Name:* Email Address:* Website: Notify me of follow-up comments by email. Notify me of new posts by email.