Answer:

Introduction:
The question asks for the condition that ensures good bonding in bricks. Out of the given options, option 'C' states that the vertical joints in alternate courses should fall in plumb. Let's understand why this condition is important for good bonding in bricks.

Explanation:
Proper alignment and placement of bricks is essential for achieving good bonding in brickwork. The vertical joints play a significant role in determining the strength and stability of the structure. Here's why the condition mentioned in option 'C' is important:

1. Vertical Joint Alignment:
The vertical joints in brickwork act as points of connection between the bricks. When the vertical joints are aligned properly, they create a continuous vertical load path, allowing the load to be transferred evenly throughout the structure. This alignment ensures a strong and stable brickwork.

2. Plumb Alignment:
Plumb alignment refers to the verticality of the joints. When the vertical joints fall in plumb, it means they are perfectly vertical, perpendicular to the horizontal plane. This alignment is crucial for maintaining the structural integrity of the brickwork, as it prevents any displacement or tilting of the bricks.

3. Bonding:
Good bonding in brickwork is achieved by ensuring a proper arrangement of bricks. The vertical joints falling in plumb helps establish a consistent bond pattern. It allows the bricks to interlock with each other, creating a strong bond between adjacent courses of bricks. This bond enhances the load-bearing capacity of the structure and prevents any cracks or failures.

4. Uniform Load Distribution:
When the vertical joints are aligned properly and fall in plumb, the load applied to the brickwork is distributed evenly across the structure. This uniform load distribution minimizes the stress concentration on individual bricks, reducing the chances of failure or deformation.

5. Aesthetics:
In addition to the structural benefits, aligning the vertical joints in plumb also enhances the visual appeal of the brickwork. The neat and uniform alignment adds beauty to the structure, making it visually pleasing.

Therefore, the condition mentioned in option 'C' ensures good bonding in bricks by aligning the vertical joints in plumb. This alignment promotes structural strength, load distribution, and aesthetic appeal of the brickwork.

Because all corner are in a perfect form. reddies also.