## 4 Results  
### Results of the Analysis of Defects  
Table 4 contains data concerning the number of defects that were identified in individual buildings. Among the identified types of elements with construction defects, the following were distinguished: plasters, windows, flooring, electrical installations, common areas (in total), water and sewage installations, doors, glazing, tiles, balustrades, facades, windows, ventilation, insulation, roofs, and shortcomings in the cleaning of elements.  
\begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline \hline \multirow{2}{*}{**No.**} & \multirow{2}{*}{**Defect Type**} & \multicolumn{8}{c}{**Investment**} & \multirow{2}{*}{**Total**} & \multirow{2}{*}{**Percentage**} \\ \cline{3-3} \cline{6-11}  & & & & & & & & & & & **Share** \\ \hline
1 & Plasters & 366 & 100 & 389 & 382 & 108 & 404 & 76 & 275 & 2100 & 22.43\% \\
2 & Windows & 218 & 63 & 176 & 248 & 196 & 273 & 52 & 183 & 1409 & 15.05\% \\
3 & Flooring & 130 & 6 & 139 & 111 & 53 & 125 & 16 & 129 & 709 & 7.57\% \\
4 & Electric installations & 74 & 30 & 70 & 124 & 41 & 169 & 6 & 153 & 667 & 7.12\% \\
5 & Common parts & 0 & 141 & 44 & 38 & 47 & 58 & 1 & 232 & 561 & 5.99\% \\
6 & Water and sewage installations & 131 & 9 & 34 & 58 & 49 & 151 & 8 & 78 & 518 & 5.53\% \\  & Shortcomings in & & & & & & & & & & \\
7 & the cleaning of & 79 & 15 & 102 & 59 & 61 & 129 & 11 & 49 & 505 & 5.39\% \\  & elements & & & & & & & & & & \\
8 & Doors & 26 & 15 & 138 & 110 & 27 & 60 & 14 & 100 & 490 & 5.23\% \\
9 & Glazing & 16 & 0 & 96 & 66 & 33 & 52 & 22 & 137 & 422 & 4.51\% \\
10 & Other elements & 113 & 5 & 69 & 49 & 32 & 60 & 24 & 31 & 383 & 4.09\% \\
11 & Tiles & 5 & 38 & 31 & 37 & 28 & 79 & 2 & 85 & 305 & 3.26\% \\
12 & Traces of moisture & 66 & 13 & 38 & 88 & 18 & 39 & 20 & 12 & 294 & 3.14\% \\
13 & Balustrades & 1 & 13 & 48 & 35 & 38 & 99 & 2 & 34 & 270 & 2.88\% \\
14 & Facades & 25 & 31 & 12 & 1 & 41 & 135 & 14 & 0 & 259 & 2.77\% \\
15 & Windowsills & 37 & 0 & 25 & 11 & 19 & 18 & 1 & 28 & 139 & 1.48\% \\
16 & Ventilation & 54 & 10 & 21 & 17 & 4 & 19 & 0 & 12 & 137 & 1.46\% \\
17 & Insulations & 47 & 1 & 32 & 5 & 6 & 6 & 21 & 15 & 133 & 1.42\% \\
18 & Roofs & 26 & 4 & 1 & 16 & 5 & 5 & 4 & 0 & 61 & 0.65\% \\  & Total & 1414 & 494 & 1465 & 1455 & 806 & 1881 & 294 & 1553 & 9362 & 100.00\% \\ \hline \hline \end{tabular}
\end{table}
Table 4: Quantitative summary of the defects in the buildings subjected to the tests.  
* Group A, marked in red, includes plasters, windows, flooring, electrical installations, common areas, water and sewage installations, doors, glazing, and the cleaning of elements. This group accounts for 80% of all the defects.
* Group B, marked in orange, includes other elements, tiles, traces of moisture, balustrades, and facades. This group accounts for 15% of all the defects.
* Group C, marked in green, includes windowsills, ventilations, insulations, and roofs. This group accounts for 5% of all the defects.  
It should be noted that it is only the first two types of construction defects, i.e., plasters and windows, that account for as much as 37.48% of all the defects found during the acceptance of the residential premises. It was also found that two types of defects, i.e., plasters and windows, are responsible for nearly half (as much as 47.54%) of all the defects in group A, which shows how important these areas of construction work are for the investment construction process.