Unit-1 introduction to building construction
- 1. Indira College of Engineering Management, Pune Building Technology and Architectural Planning UNIT I Introduction to Building Construction and Masonry. Prof. Vaibhav V. Kulkarni
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- 5. • Characteristics of Good Bricks • Size • The size of the brick should be uniform and must be of standard size. As per IS 1077(1992) the standard size of brick is 190 mm x 90 mm x 90 mm (or) 190 mm x 90 mm x 40mm. • Shape • The brick must be of rectangular shape. The sides of the brick should be parallel Also, the edges of brick must be sharp and straight. • Color • Good brick must possess uniform color which may be either deep red or cherry. The uniformity in color of bricks represents uniformity in chemical composition and homogeneous burning of brick. • Texture • The surface of the brick must not be too smooth. Excess smoothness of the bricks result in slipping of mortar. • Compressive strength • The crushing strength of the brick must not be less than 3.5 N/mm2 . The compressive strength test of brick is determined using Compression Testing Machine. • Soundness • Strike two bricks against each other. If a metallic ringing sound is produced, then the bricks are of good quality. A good quality brick must be able withstand severe weather condition. • Toughness • The brick should not break into pieces when dropped flat on hard ground from a height of about 1 m or 1.2 m. 5
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- 38. Rock & Quarry Faced • The stones have neatly cut edges while their faces are left in the natural state as they come from the quarry, hence the name 'Rock- Faced' or 'Quarry-Faced'. 38
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