Table 2 Optimized cost and % savings for the analyzed case studies.
From: Automated BIM-based structural design and cost optimization model for reinforced concrete buildings
| Â | Â | Grid dimension of original design (m) | Grid dimension after optimization (m) | Concrete quantity (m3) | Steel quantity (kg) | Material cost per floor (EGP) | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Case-study # | Direction | D1 | D2 | D3 | D4 | D5 | D6 | D7 | D1 | D2 | D3 | D4 | D5 | D6 | D7 | Original | After optimizat ion | Savings (%) | Original | After optimizat ion | Savings (%) | Original | After optimizat ion | Savings (%) |
1 | X-Direction | 3.14 | 3.20 |  |  |  |  |  | 3.12 | 3.22 |  |  |  |  |  | 24.3 | 23.3 | 4.12 | 393 | 403 | – | 52,527 | 50,625 | 3.62 |
Y-Direction | 3.38 | 8.88 | 4.90 | Â | Â | Â | Â | 4.00 | 8.20 | 4.97 | Â | Â | Â | Â | ||||||||||
2 | X-Direction | 3.60 | 4.00 | 4.40 | 2.60 | 3.20 | Â | Â | 3.60 | 4.20 | 4.20 | 2.60 | 3.20 | Â | Â | 21.1 | 20.1 | 4.98 | 376 | 375 | 0.3 | 45,960 | 43,850 | 4.59 |
Y-Direction | 2.10 | 2.70 | 2.10 | Â | Â | Â | Â | 2.30 | 2.30 | 2.30 | Â | Â | Â | Â | ||||||||||
3 | X-Direction | 3.50 | 3.50 | 5.70 | Â | Â | Â | Â | 3.58 | 3.58 | 5.53 | Â | Â | Â | Â | 29.5 | 28.5 | 3.39 | 583 | 575 | 1.4 | 64,830 | 62,750 | 3.21 |
Y-Direction | 3.10 | 4.00 | 3.76 | Â | Â | Â | Â | 3.04 | 3.92 | 3.90 | Â | Â | Â | Â | ||||||||||
4 | X-Direction | 3.00 | 3.00 | 3.73 |  |  |  |  | 3.06 | 3.06 | 3.61 |  |  |  |  | 30.3 | 28.6 | 5.61 | 575 | 575 | – | 66,350 | 62,950 | 5.12 |
Y-Direction | 3.40 | 3.00 | 3.50 | 4.00 | 3.16 | Â | Â | 3.40 | 3.10 | 3.48 | 3.86 | 3.22 | Â | Â | ||||||||||
5 | X-Direction | 6.30 | 5.00 |  |  |  |  |  | 6.20 | 5.10 |  |  |  |  |  | 45.2 | 38.3 | 15.27 | 939 | 972 | – | 99,790 | 86,320 | 13.50 |
Y-Direction | 5.00 | 4.00 | 3.00 | 4.00 | Â | Â | Â | 4.50 | 4.50 | 3.50 | 3.50 | Â | Â | Â | ||||||||||
6 | X-Direction | 3.00 | 3.50 | 2.80 | 3.00 |  |  |  | 3.00 | 3.15 | 3.00 | 3.15 |  |  |  | 45 | 39.4 | 12.44 | 907 | 1005 | – | 99,070 | 88,850 | 10.32 |
Y-Direction | 5.00 | 3.50 | 3.20 | 3.30 | 3.00 | 2.80 | Â | 3.83 | 3.90 | 3.43 | 3.32 | 3.25 | 3.07 | Â | ||||||||||
7 | X-Direction | 3.00 | 3.50 | Â | Â | Â | Â | Â | 2.88 | 3.62 | Â | Â | Â | Â | Â | 17.7 | 16.15 | 8.76 | 344 | 341 | 0.9 | 38,840 | 35,710 | 8.06 |
Y-Direction | 3.50 | 3.60 | 2.50 | 4.50 | Â | Â | Â | 3.49 | 3.69 | 2.05 | 4.87 | Â | Â | Â | ||||||||||
8 | X-Direction | 4.00 | 3.30 | Â | Â | Â | Â | Â | 3.90 | 3.40 | Â | Â | Â | Â | Â | 54.3 | 47.8 | 11.97 | 1070 | 1031 | 3.6 | 119,300 | 105,910 | 11.22 |
Y-Direction | 6.00 | 6.50 | 4.50 | 5.00 | 3.00 | 3.00 | 3.10 | 5.60 | 5.90 | 4.50 | 4.50 | 3.70 | 3.40 | 3.50 | ||||||||||
9 | X-Direction | 3.87 | 3.99 | 3.00 |  |  |  |  | 3.71 | 3.60 | 3.54 |  |  |  |  | 28.6 | 24.5 | 14.34 | 591 | 664 | – | 63,110 | 55,640 | 11.84 |
Y-Direction | 3.70 | 4.20 | 5.00 | Â | Â | Â | Â | 4.13 | 4.36 | 4.41 | Â | Â | Â | Â | ||||||||||
10 | X-Direction | 4.00 | 3.00 | Â | Â | Â | Â | Â | 4.14 | 2.86 | Â | Â | Â | Â | Â | 63.1 | 54.8 | 13.15 | 1066 | 1021 | 4.2 | 136,860 | 119,810 | 12.46 |
Y-Direction | 5.00 | 4.40 | 5.50 | 7.80 | 4.50 | 4.00 | 2.10 | 5.05 | 4.30 | 5.65 | 8.40 | 4.45 | 3.85 | 1.60 | ||||||||||
11 | X-Direction | 3.00 | 3.00 | 3.00 | Â | Â | Â | Â | 3.00 | 3.00 | 3.00 | Â | Â | Â | Â | 33.7 | 29.6 | 12.17 | 664 | 558 | 16.0 | 74,040 | 64,780 | 12.51 |
Y-Direction | 3.30 | 3.80 | 2.70 | 2.30 | 5.10 | 1.60 | Â | 3.30 | 4.28 | 2.15 | 1.37 | 6.70 | 1.00 | Â | ||||||||||
