## 6 Practical Application and Results
### Requirements Analysis  
The user's operational requirements for the field manager's role during indoor construction activities for high-rise building projects were identified through a GDTA. The procedure, analysis, and results are available in [24]. For this method's application, only the first goal outlined in the GDTA results--\"Verify constraint removal on the weekly/immediate work plan\" (goal 1.1.1 of the referenced GTMDA)--was addressed. The goal, its decisions, and SA requirements are presented in Table 2.  
From Table 2, to achieve goal 1.1.1, the field manager needs to know the \"current status of the constraints of the weekly/immediate work plan\" (level 2 SA--comprehension) to determine readiness for task execution. If constraints remain, the field manager must assess the \"probability of removing the constraints in time\" (level 3 SA--projection) to take further action. To support these mental processes, the system interface must present the SA requirements in a way that enables quick comprehension and projection of the situation, facilitating the easy attainment of SA levels 2 and 3. This is a critical system's operational requirement, derived directly from the analysis of a user's operational requirement.  
There are other system operational requirements for working during indoor construction activities. For instance, the system can run on handset or headset devices to access information on-site. However, to prevent accidents, it must not compromise the practitioner's awareness of their surroundings when in use. Given the noisy nature of construction sites, the system should prioritize visual information over audio or other sensory inputs to enhance user interaction. Notably, presenting SA requirements may require data from multiple sources. Thus, the system should integrate these sources and support scalability to allow the addition of new goals and SA requirements. In addition, the system must keep information updated to ensure users stay accurately informed. These and other key considerations are detailed in Table 3.  
\begin{table}
\begin{tabular}{c c l} \hline \hline
**Goal** & **1.1.1 Verify Constraint Removal on the Weekly/Immediate Work Plan** \\ \hline \multirow{4}{*}{Decisions} & - & Is everything necessary for task execution present? \\  & - & Are there any unresolved constraints in the weekly/immediate \\  & & work plan? \\  & - & Will the unresolved constraints be removed in time to meet \\  & & the plan? \\ \hline \multirow{4}{*}{SA requirements} & \(\bullet\) & Current status of the constraints of the weekly/immediate \\  & & work plan \\  & & \(\bullet\) & Planned tasks \\  & & \(\bullet\) & Constraints removed \\  & & \(\bullet\) & Constraints not removed \\  & \(\bullet\) & Probability of removing constraints in time \\  & & \(\bullet\) & Constraints not removed \\  & & \(\bullet\) & Estimated removal date \\  & & \(\bullet\) & Type/nature of the constraint \\  & & \(\bullet\) & Observations/status of the constraint removal \\  & & \(\bullet\) & Reliability in the responsible of the constraint \\  & & \(\bullet\) & Name of the responsible individual \\ \hline \hline \end{tabular} Note: data from [PERSON] et al. [24].  
\end{table}
Table 2: Goal, decisions, and SA requirements used in the method application.  
\begin{table}
\begin{tabular}{c c l} \hline \hline
**Type of Requirement** & \multicolumn{2}{c}{**Operational Requirements**} \\ \hline \multirow{4}{*}{Cognitive requirements} & \(\bullet\) & The system shall present information to allow the user \\  & & to easily reach high levels of SA (i.e., level 2 \\  & & SA—comprehension and level 3 SA—projection). \\ \hline \multirow{4}{*}{Physical environment} & \(\bullet\) & The system shall be used on the construction site \\  & & without reducing user’s awareness of their \\ \cline{1-1}  & & surroundings. \\ \cline{1-1}  & \(\bullet\) & The system can emphasize visualization over \\ \cline{1-1}  & & other senses. \\ \hline \hline \end{tabular}
\end{table}
Table 3: System’s operational requirements.