Which of the following options is used to enhance the alignment and strength of adjoining stones in stone masonry? 

Explanation:

Dowel Joint:

• Involves inserting metal dowels (pins) into the stones to align and secure them.

• Enhances both alignment and strength of the stone masonry by preventing lateral movement.

• Commonly used in larger, more structurally demanding stone masonry applications.

• Provides a strong connection between adjoining stones, especially when the masonry must bear significant loads.

Additional Information

Flush Joint:

1. • The mortar is finished level with the face of the stone.

   • Primarily used for aesthetic purposes, creating a smooth and even surface.

   • Does not significantly enhance the alignment or strength of adjoining stones.

   • Common in decorative or weather-resistant masonry finishes.

Key Joint:

• Involves creating a notch or key in the mortar between stones.

• Helps lock the stones together, improving their bond and alignment.

• Provides some enhancement to the strength and stability of the stonework.

• Often used to prevent lateral movement of stones.

Recessed Joint:

• The mortar is finished below the surface of the stones, creating a concave appearance.

• Primarily used for aesthetic appeal, particularly in exposed stone masonry.

• While it provides a distinct visual effect, it doesn’t significantly contribute to the alignment or strength of adjoining stones.