Causes of Damages

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COLLEGE OF ENVIRONMENTAL DESIGN

CAUSES OF DETERIORATION IN BUILDINGS

By
Dr.Abdul-Mohsen Al-Hammad

OUTLINE
INTRODUCTION THE SYSTEMATIC APPROACH FOR THE DIAGNOSIS OF A BUILDING DEFECT CAUSES OF DETERIORATION IN BUILDINGS IN GENERAL DETAILED CAUSES OF DETERIORATIN IN BUILDINGS WITH EXAMPLES

COLLEGE OF ENVIRONMENTAL DESIGN

INTRODUCTION
Proper building maintenance should be considered during:
COLLEGE OF ENVIRONMENTAL DESIGN

* Planning * Design * Construction, and * Maintenance stages During maintenance stage, effective building maintenance requires: The correct diagnosis of defect, and implementation of the correct remedial measures all based on sound technical knowledge, otherwise waste of capital resources have to be done again.

REPAIRS WITHOUT DIAGNOSES
COLLEGE OF ENVIRONMENTAL DESIGN

THE SYSTEMATIC APPROACH FOR THE DIAGNOSIS OF A BUILDING DEFECT 1/2 COLLEGE OF ENVIRONMENTAL DESIGN

1. 2.

Problem Definition Field Survey and Inspection a. Visual Inspection, includes: Taken Photos Looking for similar defect in the same area

b.

Field Measurement, includes: Written record about the sizes and dimensions of the defect Samples of the defected material and its adjacent area are taken

THE SYSTEMATIC APPROACH FOR THE DIAGNOSIS OF A BUILDING DEFECT 2/2 3. Laboratory Testing of Field Samples Requires Test for: Strength Chemical and physical properties of the field samples Other tests relevant to the defect condition 4. Examine the AS-Built Design Drawings Obtain information relevant to the defect area 5. Analysis and Discussion Compare the Lab. And field study results with the information obtained from the As-built drawings then after that, 6. Conclusion can be withdrawn COLLEGE OF ENVIRONMENTAL DESIGN

CAUSES OF DETERIORATION IN BUILDINGS IN GENERAL
COLLEGE OF ENVIRONMENTAL DESIGN

The primary source and causes of deterioration and decay in structures and buildings can be listed as follows: 1.Human 2.Chemical 3. Atmospheric 4.Structural 5. Moisture 6.Fire 7.Faulty Design 8. Faulty Construction 9. Faulty Materials 10. Faulty System 11. Faulty Systems 12. Cleaning 13. Vandalism

COLLEGE OF ENVIRONMENTAL DESIGN

CAUSES OF DETERIORATION IN BUILDINGS

1. HUMAN

1.
COLLEGE OF ENVIRONMENTAL DESIGN

Human

-

Failure to clean and carry out routine maintenance Ignorance of the causes of deterioration and decay Poor planning for proper maintenance Failure to promote awareness of maintenance needs by all who use the buildings. Adopting a negative attitude of waiting until emergency measures are required.

COLLEGE OF ENVIRONMENTAL DESIGN

CAUSES OF DETERIORATION IN BUILDINGS

2.CHEMICAL

2.
COLLEGE OF ENVIRONMENTAL DESIGN

Chemical

- Interaction of certain cleaning agents with materials and/or components causing disintegration, softening or discoloration. - Promoting Corrosion - Interaction of certain dissimilar materials in close contact with one another in a corrosion environment.

2.CHEMICAL-1-Discoloration-Concrete ages
COLLEGE OF ENVIRONMENTAL DESIGN

2.CHEMICAL 3-Alkali Aggregate Reaction
COLLEGE OF ENVIRONMENTAL DESIGN

COLLEGE OF ENVIRONMENTAL DESIGN

CAUSES OF DETERIORATION IN BUILDINGS

3.ATMOSPHERIC

3.
COLLEGE OF ENVIRONMENTAL DESIGN

Atmospheric

- Reaction of the structure, external fabric, finishes and claddings to the atmospheric elements such as: Wind Rain Sun Frost and snow for cold weather Pollution in the atmosphere - Reaction of the building to the penetration of the above atmospheric elements.

3-ATMOSPHERIC 1.D-Cracking –frost cycles
COLLEGE OF ENVIRONMENTAL DESIGN

3-ATMOSPHERIC 2-Climate
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3-ATMOSPHERIC 3-Clay Brickwork –frost
cycles-Salt reaction
COLLEGE OF ENVIRONMENTAL DESIGN

3-ATMOSPHERIC 4-Clay Natural Stone –
frost cycles-Salt reaction-pollution
COLLEGE OF ENVIRONMENTAL DESIGN

COLLEGE OF ENVIRONMENTAL DESIGN

CAUSES OF DETERIORATION IN BUILDINGS

4.STRUCTURAL...
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