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1. Brick bonds

2. The junction of two or more masonry pieces leaving a space between the bricks or concrete masonry units that are filled with mortar or grout. If the joint is perpendicular, then the bed joints are termed vertical joints, side joints, head joints, or just joints. AMITY SCHOOL OF ARCHITECTURE AND PLANNING (ASAP)

3. A perforation or hole on the longer face of a brick made with the object of forming an indentation for the mortar. T his hollow depression also reduces the weight and makes it easier to handle. The depth of the frog is usually between 10 to 20 mm. Frogged bricks should lay with the frog upward and fill up with mortar. The reason is to obtain higher strength, stability, and sound insulation. AMITY SCHOOL OF ARCHITECTURE AND PLANNING (ASAP)

4. BED The bed is the horizontal layer of mortar where brick or stone units are laid ( parellel to the beds of bricks) thickness from 5-12 MM; Generally taken as 10 MM. BED JOINT If the joint is parallel to the bed of masonry pieces in a course, it is termed as bed joint. PREPENDS The vertical joints separating the bricks either length or cross directions For a good bond- prepends of the alternate course should be vertically one ablove the other. LAP The horizontal distance between the vertical joints in successive courses. For a good bond it should be ¼ the length of brick AMITY SCHOOL OF ARCHITECTURE AND PLANNING (ASAP)

5. The external corners of walls are called Quoins The brick which form the external corner is known as quoin brick . AMITY SCHOOL OF ARCHITECTURE AND PLANNING (ASAP)

6. BAT If a brick is cut across the width (un-cut header face) CLOSER If a brick is cut across the length (uncut stretcher face ) FOR A GOOD BOND Amount of lap should be – min ¼ brick along the length of wall – ½ brick across the thickness of wall AMITY SCHOOL OF ARCHITECTURE AND PLANNING (ASAP)

7. STRETCHER OR RUNNING BOND AMITY SCHOOL OF ARCHITECTURE AND PLANNING (ASAP) It is created when bricks are laid with only their stretchers showing, overlapping midway with the courses of bricks below and above.

8. Useful for one brick partition walls i.e. half brick thick partition wall where no Headers are used! AMITY SCHOOL OF ARCHITECTURE AND PLANNING (ASAP)

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10. Stretcher bond in the brick is the simplest repeating pattern. • But the limitation of stretcher bond is that it cannot make effective bonding with adjacent bricks in full width thick brick walls. • They are suitably used only for one-half brick thick walls such as for the construction half brick thick partition wall. AMITY SCHOOL OF ARCHITECTURE AND PLANNING (ASAP)

11. HEADER BOND AMITY SCHOOL OF ARCHITECTURE AND PLANNING (ASAP)

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14. The overlap is kept ½ of the brick width • This is done by using Three Quarter brick bats in the alternate courses • Not Strong if the pressure is in the direction of the Length • Not suitable for Load Bearing Walls • Used for CURVED SURFACES as stretcher will project out of the wall face AMITY SCHOOL OF ARCHITECTURE AND PLANNING (ASAP)

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