Post-Handover Housing Quality Management and Standards in Korea
Abstract
:1. Introduction
2. Literature Study
2.1. Definition of Housing Quality
2.2. Quality Control Chart
2.3. Quality Failure
2.4. Quality Issue
3. Materials and Methods
3.1. Data Collection
3.2. Cost Value Adjustment
3.3. Classification to Groups
3.4. Review on Quality Issue
4. Results
4.1. Comparison of Quality
4.2. Quality Issue to Failure
4.2.1. Concrete Cracks
- (1)
- Should the allowable crack width be recognized as a criterion for determining defects?
- (2)
- Should a concrete interlayer crack to the outer wall be recognized as a defect?
- (3)
- What should be recognized as the unit price of repair cost?
- (4)
- Is surface treatment after crack repair necessary?
- (5)
- Should a repair surcharge for building height be applied to crack repair work?
- (6)
- Which one should be applied as a repair method to wet concrete cracks?
4.2.2. Other Issues
- (1)
- Wither of trees:
- (2)
- Corrosion of bathroom mirror:
- (3)
- Dew condensation on private balconies.
4.3. Review Results of Technical Dispute
5. Discussion
5.1. Housing Quality Management
5.2. Consumer-Centered Housing Quality Standard
6. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Cost | N | Sum (Million USD) | Mean (Million USD) | Std Dev. |
---|---|---|---|---|
Construction cost | 285 | 48,237 | 169 | 164 |
Defect repair cost | 285 | 176 | 0.62 | 0.67 |
Group | Cases | Mean (%) | Std Dev. (%) | Max (%) | Min (%) |
---|---|---|---|---|---|
A | 142 | 0.5287 | 0.3051 | 1.6993 | 0.0623 |
B | 87 | 0.3831 | 0.1977 | 1.1424 | 0.0842 |
C | 56 | 0.3007 | 0.1741 | 0.7587 | 0.0388 |
Group | Cases | CL (%) | UCL (%) | Quantities of Failure | Percent of Failure (%) |
---|---|---|---|---|---|
A | 142 | 0.5287 | 1.4438 | 4 | 2.82 |
B | 87 | 0.3831 | 0.9761 | 1 | 1.15 |
C | 56 | 0.3007 | 0.8230 | 0 | 0.00 |
Case | 1 | 2 | 3 | 4 | 5 |
---|---|---|---|---|---|
Group | A | A | A | A | B |
Household | 2182 | 208 | 236 | 429 | 1196 |
Total floor area (m2) | 366,425.4 | 30,547.7 | 34,978.6 | 38,095.1 | 157,227.9 |
Construction cost (million USD) | 112.2 | 15.49 | 36.65 | 21.39 | 138.99 |
Defect repair cost (million USD) | 1.88 | 0.26 | 0.57 | 0.32 | 1.59 |
Ratio of DRCCC (%) | 1.6748 | 1.6993 | 1.5631 | 1.5027 | 1.1424 |
CL (mean, %) | 0.5287 | 0.5287 | 0.5287 | 0.5287 | 0.3831 |
Std. Dev (%) | 0.3051 | 0.3051 | 0.3051 | 0.3051 | 0.1977 |
UCL (CL + 3σ, %) | 1.4438 | 1.4438 | 1.4438 | 1.4438 | 0.9762 |
DRCCC to CL | 3.17 | 3.21 | 2.96 | 2.84 | 2.98 |
Exceed to UCL | Yes | Yes | Yes | Yes | Yes |
Object or Work | Technical Issue and Defect Type | Failure Case | ||||
---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | ||
Concrete crack | Allowable crack width | O | O | |||
Concrete interlayer crack to the outer wall | O | |||||
The unit price of repair cost | O | |||||
Surface treatment after crack repairing | O | |||||
Repair surcharge for building height | O | O | ||||
Repair method to wet concrete cracking | O | |||||
Landscaping tree | Wither of trees | O | ||||
Sanitary apparatus | Corrosion of bathroom mirror | O | O | |||
Dew condensation | Dew condensation on a private balcony | O |
Detailed Issue and Defect Type | Quality Standard | Industry Practice | Problem in Use |
---|---|---|---|
Allowable crack width | O | ||
Concrete interlayer crack to the outer wall | O | ||
Unit price of repair cost | O | ||
Surface treatment after crack repairing | O | ||
Repair surcharge for building height | O | ||
Repair method to wet concrete cracking | O | ||
Wither of tree | O | ||
Corrosion of bathroom mirror | O | ||
Dew condensation on the private balcony | O |
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Park, J.; Seo, D. Post-Handover Housing Quality Management and Standards in Korea. Buildings 2023, 13, 1921. https://doi.org/10.3390/buildings13081921
Park J, Seo D. Post-Handover Housing Quality Management and Standards in Korea. Buildings. 2023; 13(8):1921. https://doi.org/10.3390/buildings13081921
Chicago/Turabian StylePark, Junmo, and Deokseok Seo. 2023. "Post-Handover Housing Quality Management and Standards in Korea" Buildings 13, no. 8: 1921. https://doi.org/10.3390/buildings13081921
APA StylePark, J., & Seo, D. (2023). Post-Handover Housing Quality Management and Standards in Korea. Buildings, 13(8), 1921. https://doi.org/10.3390/buildings13081921