Lecture 1 Work to existing building part 1
Defect Types
Design/construction deficiencies ( The designer should specify the materials, Lack of workmanship quality
Deterioration due to wear and tear
(Most affected areas are joinery, surface finishes, and mechanical items (ex: windows and doors))
Deterioration of materials due to dampness, climatic
conditions and temperature
Diagnosis & Remedies
1-Condensation: It is the change of the physical state of matter from the gas phase into the liquid phase.
Direct heating the surface
Thermal Insulation
2. Rising Damp (Redwater on the slab on the ground next to the column)
Repair: Create a new damp-proofing course to prevent moisture movement
3. Rain penetration and remedies
4. Leakage in plumbing and drainage
5. Frost Heave
6. Expansion of Materials
7. Sulphate Action
8. Timber Decay
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