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Number of structures per typology

A summary of the total number of structures surveyed by each typology are:

Typology Iquique Rancagua Osorno
Reinforced concrete, 1-3 story houses 1,923 464 2,017
Reinforced concrete, 3-9 story buildings 306 156 198
Reinforced concrete, 10-24 story buildings 101 7 9
Reinforced concrete, 25 or more story buildings 31 0 0
Unreinforced clay brick masonry, 1-2 story houses 99 4,887 3
Reinforced clay brick masonry, 1-2 story houses 6,212 36,129 2,349
Reinforced clay brick masonry, 3 story buildings 77 333 4
Reinforced clay brick masonry, 4-5 story buildings 58 159 5
Confined clay brick masonry, 1-2 story houses 2,056 3,545 72
Confined clay brick masonry, 3 story buildings 27 255 16
Confined clay brick masonry, 4-5 story buildings 132 174 0
Reinforced or confined concrete block masonry, 1-2 story houses 10,894 91 137
Reinforced or confined concrete block masonry, 3 story buildings 92 0 1
Reinforced or confined concrete block masonry, 4-5 story buildings 132 12 0
Timber houses 4,608 676 24,872
Emergency houses 2 26 48
Adobe houses 180 277 1
Informal or self-construction housing 95 29 2
Total 27,025 47,220 29,734

The surface covered corresponds to 76% on average per city. According to the covered surface for each city, a linear extrapolation was performed by surface to obtain the number of structures representing 100% of the surface of the cities. This extrapolation generates the Extrapolated Model, which is shown below with the Global Model results for the urban zones of the three assessed cities:

Typology Iquique Rancagua Osorno
Global Extrapolated Global Extrapolated GlobalExtrapolated
Reinforced concrete, 1-3 story houses 6,244 2,478 3,849 624 1,441 2,664
Reinforced concrete, 3-9 story buildings 59 394 134 210 65 262
Reinforced concrete, 10-24 story buildings 84 130 19 9 6 12
Reinforced concrete, 25 or more story buildings 42 40 2 0 0 0
Unreinforced clay brick masonry, 1-2 story houses 172 128 3,387 6,569 934 4
Reinforced clay brick masonry, 1-2 story houses 3,154 8,005 43,719 48,560 1,304 3,103
Reinforced clay brick masonry, 3 story buildings 146 99 36 448 0 5
Reinforced clay brick masonry, 4-5 story buildings 0 75 178 214 28 7
Confined clay brick masonry, 1-2 story houses 49 2,649 1,238 4,765 1,070 95
Confined clay brick masonry, 3 story buildings 282 35 70 343 0 21
Confined clay brick masonry, 4-5 story buildings 0 170 48 234 28 0
Reinforced or confined concrete block masonry, 1-2 story houses 14,677 14,039 1,649 122 37 181
Reinforced or confined concrete block masonry, 3 story buildings 0 119 0 0 0 1
Reinforced or confined concrete block masonry, 4-5 story buildings 161 170 12 16 0 0
Timber houses 6,185 5,938 3,958 909 33,415 32,856
Emergency houses 103 3 408 35 496 63
Adobe houses 25 232 2,605 372 11 1
Informal or self-construction housing 110 122 22 39 34 3
Total 31,493 34,826 61,334 63,469 38,869 39,278

A deeper analysis of this comparison between models can be found in Section 4 of the Exposure Model: Building typology distribution at the census block level and replacement costs report.

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  • risk/detailed_exposure/detailed_exp_model_chile_structures.txt
  • Last modified: 2015/12/24 15:42
  • by Matias Hube