What is the process of establishing brick arrangement and head joint width without mortar called?

The term that describes the process of establishing brick arrangement and head joint width without the use of mortar is known as dry bonding. This technique involves laying out the bricks to ensure proper alignment and spacing, allowing the mason to visualize and plan the overall design before the actual mortar is applied. Dry bonding is crucial for ensuring that the final product meets design and structural specifications, as it enables adjustments to be made easily without the limitations imposed by mortar.

By dry bonding, masons can achieve a precise fit and determine the best method for brick laying, taking into account factors like aesthetic patterns, joint width, and structural integrity. This careful planning stage is vital for successful masonry work, as it helps avoid potential issues that can arise from improper brick alignment or joint spacing after the mortar is set.