- Building with bricks
Bonding brickwork means the arrangement in brickwork so that the units are tied together to form a solid mass. The load is then evenly distributed along the length of the wall.
These drawings show what happens to a wall that is not bonded and one that is bonded.
There are two methods of lapping:
- The half brick lap
- The quarter-brick lap, also known as the half bond and the quarter bond.
If bricks are so placed that no lap occurs, the cross joints or perpends are directly over each other, and we have what is known as ‘straight joints’, which must be avoided at all costs.
There are basically three types of bonds used in South African construction and examples of all three can be seen in all towns and cities, - the Stretcher Bond, English Bond and Flemish bond.
(alternate layers of stretchers)
Consists of bricks laid lengthways along the line and mapped. This is by far the most commonly used bond in South Africa. In cavity wall construction this is the most economical bond to employ.
Consists of alternate courses of headers and stretchers. This bond is believed to be the strongest bond because of the header across bonding. It is usually employed in foundation walling behind the half-brick outer skin, and for retaining walls
Consists of headers and stretchers in the same course.