What must you do at the first place, before setting out the profile at the work site in building construction explanation please make it short explanation?

Before setting out the profile at the work site in building construction, you must first conduct a survey of the site to determine the boundaries, levels, and any existing structures or obstacles. This information will help you accurately position the profile and ensure that the building is constructed in the correct location and alignment.

Before setting out the profile at the work site in building construction, you must first:

- Establish a benchmark and reference points to accurately locate the building's position and orientation.