You have been selected to do the telecommunications design on a new, single story building. The architect requires the size and location of the telecommunications rooms so their building design can…

The entrance facility location is determined after TR requirements are established, since TR placement drives where backbone cabling and entrance pathways must connect.

The number of work areas, their locations, and the services they require directly drive the quantity, size, and placement of telecommunications rooms - precisely the information the architect needs to proceed. Without this foundational data, decisions about entrance facility routing, room power and HVAC loads, equipment selection, and growth planning have no technical basis. This step establishes the demand from which all other design decisions are derived.

Power, HVAC, and security requirements for the room cannot be properly specified until the room size and equipment loads are known, which first requires knowing the work area count and services.

Future growth planning is an important input but is secondary to establishing the baseline work area count and service requirements that define the core room design.

Equipment type selection depends on the services and user counts determined by the work area survey, so this step logically follows choice B rather than preceding it.