## 4 Results and Discussion  
First, let us present the results of the threat level obtained in MATLAB software for two different matrices using various defuzzification methods in Tables 8 and 9. Based on the data in Tables 8 and 9, calculate the value of the risk lag time in days (\(\mathrm{RLT}^{\mathrm{c}}_{\mathrm{d}}\)) using Equation (2) and the total activity duration considering risk lag time. The results are presented in Tables 10 and 11. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline  & & \multicolumn{4}{c}{\(\mathrm{RLT}^{\mathrm{c}}_{\mathrm{\%}}\), \%} \\
**Activity** & \multirow{2}{*}{**Centroid**} & \multirow{2}{*}{**Bisector**} & **The Defuzzification Method** & \multirow{2}{*}{**Method**} \\  & & & **Middle of** & **Smallest of** & **Largest of** \\  & & & **Maximum** & **Maximum** & **Maximum** \\  & & & **(MOM)** & **(SOM)** & **(LOM)** \\ \hline (A) & \multirow{2}{*}{57.4} & \multirow{2}{*}{61.0} & \multirow{2}{*}{66.5} & \multirow{2}{*}{59.0} & \multirow{2}{*}{74.0} \\ Site Investigation and Preparation & & & & & \\ (B) & & & & & \\ Foundation Works & 52.0 & 54.0 & 66.5 & 53.0 & 80.0 \\ on Section 1 & & & & & \\ (C) & & & & & \\ Foundation Works & 41.1 & 38.0 & 33.5 & 20.0 & 47.0 \\ on Section 2 & & & & & \\ (D) & & & & & \\ Construction of Monolithic Building Frame on & 57.2 & 60.0 & 67.0 & 54.0 & 80.0 \\ (E) & & & & & \\ Construction of Monolithic Building Frame on & 58.3 & 61.0 & 67.0 & 54.0 & 80.0 \\ Section 2 & & & & & \\ (F) & & & & & \\ Masonry Works & 66.7 & 67.0 & 67.0 & 67.0 & 67.0 \\ \hline \hline \end{tabular}
\end{table} 
Table 8: The results of \(\mathrm{RLT}^{\mathrm{c}}_{\mathrm{\%}}\) for risk matrix type I with the different defuzzification methods. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline  & & \multicolumn{4}{c}{\(\mathrm{RLT}^{\mathrm{c}}_{\mathrm{\%}}\), \%} \\
**Activity** & \multirow{2}{*}{**Centroid**} & \multirow{2}{*}{**Bisector**} & **The Defuzzification Method** & \multirow{2}{*}{**Method**} \\  & & & **Middle of** & **Maximum** & **Smallest of** \\  & & & **Maximum** & **Maximum** \\  & & & **(MOM)** & **(SOM)** & **(LOM)** \\ \hline (A) & \multirow{2}{*}{32.3} & \multirow{2}{*}{33.0} & \multirow{2}{*}{33.5} & \multirow{2}{*}{59.0} & \multirow{2}{*}{41.0} \\ Site Investigation and Preparation & & & & & \\ (B) & & & & & \\ (B) & & & & & \\ (C) & & & & & \\ Construction of Monolithic Building Frame on & 46.1 & 44.0 & 33.0 & 54.0 & 46.0 \\ Section 2 & & & & & \\ (F) & & & & & \\ Masonry Works & 33.3 & 33.0 & 33.0 & 67.0 & 33.0 \\ \hline \hline \end{tabular}
\end{table} 
Table 9: The results of RLT% for risk matrix type II with the different defuzzification methods. Let us consider the results for risk matrix type 1, presented in Table 8. Firstly, it should be noted that the maximum values of \(\text{RLT}^{\text{c}}_{\text{d}}\) were obtained using the defuzzification method such as largest of maximum, while the minimum value \(\text{RLT}^{\text{c}}_{\text{d}}\) was calculated using the defuzzification methods such as centroid, bisectors, and smallest of maximum (SOM). The relative difference between the maximal and minimal values of \(\text{RLT}^{\text{c}}_{\text{d}}\) for activities ranges from 0% to 67%, with a mean value of 29.9% for every activity. Let's consider the results \(\text{RLT}^{\text{c}}_{\text{d}}\) for risk matrix type II, presented in Table 11. The maximal values of \(\text{RLT}^{\text{c}}_{\text{d}}\) were obtained using the defuzzification methods such as largest of maximum (LOM), smallest of maximum (SOM), and centroid. The minimal value of \(\text{RLT}^{\text{c}}_{\text{d}}\) was calculated using the defuzzification methods such as centroid, bisectors, smallest  
of maximum (SOM), middle of maximum (MOM), and largest of maximum (LOM). The relative difference between the maximal and minimal values of \(\text{RLT}^{\text{c}}_{\text{d}}\) for activities ranges from 25% to 50%, with a mean value of the relative difference between the maximal and minimal values of \(\text{RLT}^{\text{c}}_{\text{d}}\) for every activity being 41.3%.