Objectives of Bonds
Types of Bonds
longer narrow faced brick is called as stretcher and this bond is known also as running bond which is created in the time when the bricks are laid with only their stretches, overlapping midway with the courses of bricks below and above. They come with the simplest repeating pattern but the limitation can’t make effective bonding with near bricks in full width thick brick walls. These bonds are generally used in the steel or reinforced concrete framed structures as outer facing and in cavity walls, boundary walls, gardens etc. Walls built with stretcher bonds are not enough strong to stand alone in longer span and height and need supporting structure like brick masonry columns at normal intervals.
- Stretcher Bond
Header is the shorter square face of the brick measuring 9cm * 9cm and the header bond is known as heading bond where all the bricks in every course are placed as headers on the faces of the walls. This bond is used for the construction of walls with full brick thickness measuring 18cm and the overlap is similar to half width of the brick.
- Header bond
It has only one course of stretcher and a course of header above it where headers are laid centered on the stretches in course below and every alternate row is vertically aligned. Quoin closer is used in the beginning and the end of a wall after first header to break the flow of vertical joints and a quoin close is a brick cut lengthwise into two halves and used at corners in brick walls.
- English bond
- Flemish bond
in this bond, the bricks are arranged for thick walls where facing and backing are needed to be constructed with bricks of different thickness and the bond has heading and stretching corners nicely arranged.
- Facing bond
it is a change of the old English cross bond and has alternate courses of headers and stretchers; here the bricks are arranged in a form where every stretching course start at the quoin with a three-quarter bat and the alternate stretching courses has headers placed next to the three-quarter brick bat given at the quoin.
- Dutch bond
it is like English bond and is very strong to bear a good elevation where queen closer are beside the quoin headers.
- English cross bond
- English cross bond