BONDS IN BRICKWORK

BONDS IN BRICKWORK

The bricks were of uniform size can be arranged conveniently in a variety of forms. some of the rules to be observed for getting a good bond are as follow:

1. The amount of lap should be minimum one-fourth brick along the length of the wall and one -half brick across the thickness of the wall.

1. The bricks should be of uniform size to get the uniform lap.

1. The stretchers should be used in the facing. The hearting should be carried out with headers only. 

1. The use of brickbats should be discouraged except under special circumstances. 

1. The vertical joints in the alternate courses should be along the same perpend.  

Types of bonds in brickwork

1. Stretcher bond
2. header bond
3. English bond
4. Flemish bond
5. Diagonal bond
6. Zig-Zag bond\

Stretcher Bond:- In this type of bond, all the bricks are arranged in the stretcher courses. The stretcher bond is useful for one-brick partition walls as there are no headers in such walls.  As this bond does not develop the proper internal bond, it should not be used for walls having the thickness greater than that of the one brick wall. 

Header Bond:- In this types of bond, all the bricks are arranged in the header course. the overlap is usually kept equal to half the width of brick and it is achieved by using three-quarter brickbats in each alternate courses as quoins. this bond does not have a strength to transmit pressure in the direction of the length of the wall. however, this bond is used for a curved surface in brickwork because of stretchers, if used for curved surfaces, would project beyond the face of the wall. 

English Bond:- This types of bond is generally used in practice. the alternate courses consist of stretchers and headers. the queen closer is put next to the quoin header to develop the face lap. each alternate header is centrally supported over a stretcher.

Flemish Bond:- In this type of bond,  the headers are distributed evenly and hence, it creates a better appearance than the English bond. In every course, the headers and stretchers are placed alternatively. The queen closer is put next to the quoin header in alternate courses to develop the face lap. Every header is centrally supported over a stretcher below it.

Diagonal bond:- The bricks are laid diagonally. The angle of inclination is so selected  that there is minimum breaking of the bricks. The triangular pieces of bricks required near the sides are  cut to shap. This bond is useful for walls having thickness of  2 to 4 bricks. It is used for the construction of the footings of high walls.

Zig-Zag:- The bricks are laid in a zig-zag fashion. It is commonly used for making ornamental panels in the flooring of bricks.