# An Expert Knowledge-Based System to Evaluate the Efficiency of Dry Construction Methods
## 3 Results
### The Analysis of the Dry Construction Potential in Finishing Construction Works  
The results of the simulations presented above represent useful data for the next analysis of the potential of dry construction systems and techniques for finishing works from several points of view, in terms of the construction time, in terms of costs, or in terms of the weight of the structures of partitions, wall finishes, floors, and ceilings. Regarding the construction time of the finishing works, Figure 8 presents the total construction time of the finishing works in the reference family house FH 70, for all simulated combinations of systems and techniques separately. For a faster and clearer evaluation, the shortest construction times within the examined combinations of individual technological models are highlighted in dark green, and the longest construction times are highlighted in deep red. The average values of the time parameter in technological models M1P, M2P, M3P are also highlighted in the colors corresponding to each model: models M1--blue, M2--yellow, and M3--green. As for the technological model M1, which includes only wet systems and techniques, the construction time ranges from a minimum time of 73 days to the longest implementation of finishing works in the case of combinations M1/5 and M1/7, where the construction time is 108 days. The average value of the construction time in the case of combinations of wet construction systems and techniques is 95 days. This time directly depends on the choice of technique and is strongly dependent on the duration of technological breaks after individual works. The construction time in the case of combinations of only dry finishing works (technological model M2) is from 36 days (M2/9) to a maximum of 44 days (M2/8). The average value of the construction time for finishing works in the case of combinations of only dry construction systems and techniques is 39 days. In the case of the technological model M3, in which dry and wet construction systems and techniques are combined in each of the individual combinations of the finishing works (partitions, ceilings, floors, \begin{table}
\begin{tabular}{l c c c c c} \hline \hline  & **Summary—FH 70** & \multicolumn{1}{c}{**Total**} & \multicolumn{1}{c}{**Total Labor**} & \multicolumn{1}{c}{**Total**} \\  & **Construction Cost** & **Intensity** & **Construction Time** & **Total Weight** \\ \hline \multicolumn{5}{c}{**Combinations**} & **EUR** & **Nhs** & **Day** & **t** \\ \hline M3/1 & WMP-TB-CP-TB-WP-TB-DS-TB & 9469.60 & 284.838 & 61 & 16.577 \\ M3/2 & WMP-TB-CP-TB-WF-TB-DL-TB & 9300.98 & 296.614 & 83 & 24.503 \\ M3/3 & WMP-TB-WP-TB-WF-TB-SC-TB & 11,795.82 & 235.833 & 78 & 26.771 \\ M3/4 & CP-TB-WP-TB-WF-TB-DP-TB & 6697.85 & 201.912 & 78 & 16.879 \\ M3/5 & WMP-TB-CP-TB-DL-TB-DS-TB & 10,136.64 & 370.903 & 52 & 16.569 \\ M3/6 & WMP-TB-WP-TB-SC-TB-DS-TB & 10,072.58 & 330.630 & 58 & 20.166 \\ M3/7 & CP-TB-WP-TB-DP-TB-DS-TB & 7807.01 & 254.158 & 53 & 8.789 \\ M3/8 & WMP-TB-WF-TB-DL-TB-SC-TB & 9661.06 & 322.923 & 72 & 19.340 \\ M3/9 & WTP-TP-WT-TD-DT-TB-SC-TB & 7854.58 & 229.957 & 77 & 15.653 \\ M3/10 & CP-TB-WF-TB-DP-TB-DL-TB-DL-TB & 7185.04 & 237.509 & 84 & 18.008 \\ M3/11 & WMP-TB-DL-TB-SC-TB-DS-TB & 11,969.74 & 419.298 & 51 & 17.894 \\ M3/12 & WF-TB-DP-TB-DL-TB-SC-TB & 8486.34 & 269.015 & 63 & 16.437 \\ M3/13 & CP-TB-DP-TB-SC-TB-DS-TB & 10,340.61 & 321.533 & 47 & 10.236 \\ M3/14 & CP-TB-DP-TB-DL-TB-DS-TB & 9249.14 & 293.550 & 47 & 9.700 \\ \hline M3P & Average & 9287.64 & 290.62 & 60 & 15.28 \\ \hline \hline \end{tabular}
\end{table} 
Table 9: The summary of the combinations of DCSTs and WCSTs in the family house FH 70.  
and wall finishes), the construction time is a minimum of 47 days (M3/13 and M3/14) and a maximum of 84 days (M3/10). Compared to MP1, the average construction time is reduced by 12% to 50%, on average by 32%.