Proper bonding method in brickwork
Bonds in brick refers to a process to set up the bricks in courses in order that separate brick units are connected jointly and the vertical joints of the consecutive courses do not remain in equivalent vertical line.
OBJECTIVES OF BRICK BONDING:
1. Acquire utmost strength at the time of allocating the loads to be transmitted throughout the wall, column or pier.
2. If bonds in brick work are organized imperfectly, then a continuous vertical joint will be formed. It is known an unbonded wall that contains little strength and longevity.
3. To sustain lateral strength and defiance to side thrusts.
4. To produce an desirable appearance.
SOME USEFUL TIPS FOR BONDING IN BRICKWORK:
To keep up perfect bond, the following rules should be maintained.
RULE-1: The bricks should contain consistent size. The length of the brick should have been twice its width and one joint to retain uniform lap. Without uniform lap, proper bond can’t be produced.
RULE-2: The amount of lap should contain minimum ¼ brick length along the length of the wall and ½ brick length across the thickness of the wall.
RULE-3: It is recommended not to use brick bats if not it is essential in special locations.
RULE-4: In alternate courses, the center line of header should overlap with the center line of the stretcher, in the course under or over it.
RULE-5: The vertical joints in the alternate courses should remain along the equivalent vertical axis.
RULE-6: The stretcher can be only provided in the facing; they should not be utilized in the hearting. Hearting should be accomplished in headers only.
RULE-7: It is appropriate to arrange every sixth course as a header course on both the sides of the wall.
RULE-8: The raked and other joints that arrange horizontal water tables should not be utilized. Concave and weathered joints should have been arranged.
Article Source: civilblog.org