Rat trap bond is a kind of brick masonry wall in which bricks are laid in a vertical position instead of the traditional horizontal position. This arrangement creates a hollow space in the wall. It is also known as the Chinese brick bond. In this arrangement, shinner and rowlock are visible on the face of the masonry. (refer figure).
Rat Trap Bond is a modular sort of brick masonry bond in which the bricks are laid in an upward position which makes a cavity in the wall while guaranteeing similar wall thicknesses in the case of the typical brick masonry wall. It is otherwise called a Chinese block bond.
Rat trap bond wall is one of the walls constructing techniques for brickwork in wall construction. This strategy is containing minor differences while setting bricks during brickwork; additionally, it is chipping away at a void-production rule.
It demonstrates there is space between the two blocks when put on the layer. Blocks position in this system is vertical, so the block face with mist remains stay internal face where empty space is generated because of the upstanding place of the blocks.
The principal objective of this thought was to draw down cost in the material in development however much as could reasonably be expected besides, equal, it decreased material necessities, and comparably, additionally, it gives extraordinary warm proficiency when it analyzes to the more established example of block brickwork.
The significant thing that desires to note down is that because of this strategy, the strength of the wall isn’t impacted.
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Who invented the rat trap bond?
Rat trap bond was developed by architect Laurie Baker in the year 1970. The main purpose behind this invention was to reduce the cost of brick masonry construction.
The cavity gap created by a rowlock between two bricks provides thermal comfort in the building. It protects the building’s interior from the external environment.
Advantages of Rat Trap Bond
- Same strength as a traditional brick wall.
- It decreases the cost of the wall significantly.
- It works as thermal insulation.
- It can be used as a thick partition wall.
- Reinforcement can be inserted in the hollow space.
Disadvantages of Rat Trap Bond
- It required the skilled worker to avoid wastage of mortar.
- It is very difficult to break only a single brick from a rat trap bond, there are possibilities that more than one brick can easily fall down.