In the context of stair construction, when should adjustments for the riser height take place?

Adjustments for the riser height should take place during the riser layout phase. This is crucial because the riser height directly impacts the overall safety and comfort of the stairway. During the layout process, carpenters will determine the dimensions and spacing of each riser to ensure compliance with building codes, ergonomics, and structural integrity.

Making these adjustments at this stage allows for accurate measurements to ensure a consistent height for each riser, which is essential for user safety. If adjustments are made after the stringer is constructed, it may lead to complications in the alignment and fit of the stairs, making it difficult to maintain uniformity across the entire flight.

Measuring the tread thickness has its importance in stair design but is a separate consideration from establishing the riser height. Adjustments made during the installation of handrails do not address the fundamental need for proper stair rise, as this part of the process comes later in the construction sequence. Thus, focusing on the riser layout ensures that all elements related to rise and fall can be accurately and safely configured.