How much clearance should there be between the end of a built-up girder and the masonry in a masonry pocket?

In construction, particularly when dealing with built-up girders and masonry pockets, it is essential to allow for a specific clearance to accommodate various factors such as thermal expansion, moisture control, and the prevention of potential movement or settling of the structure.

A clearance of 1/2" between the end of a built-up girder and the masonry in a masonry pocket is the standard requirement. This space allows for the necessary expansion and contraction that can occur due to temperature changes, ensuring the integrity of the connection and reducing the risk of damage to both the girder and the masonry.

Additionally, this clearance helps to prevent any direct contact between the wood and masonry, which can lead to moisture retention and potential rot or deterioration of the wood over time. By adhering to this standard clearance, builders ensure the long-term durability and stability of the structural elements involved in the construction.