The document summarizes the findings of an inspection of quarters located at a railway station. Visual observations found structural cracks in walls, spalling and peeling of concrete covers, corrosion of reinforcement, settlement of floors, and dampness. The reasons for these issues included differential foundation settlement, stress concentration cracks, water seepage causing corrosion, poor soil conditions resulting in floor settlement, and lack of proper maintenance. Tests such as ultrasonic pulse velocity, half-cell potential, rebound hammer, carbonation, and resistivity tests were recommended. Suggested repair techniques included crack stitching, bond coats and grouts, proper concrete covers and coatings, polymer and epoxy overlays, soil compaction, and replacing drainage

1. PRESENTATION
BY
R.RAGHAVENDRA
I/II M.Tech, CTM

2. CONTENTS
: FEATURES
1. SALIENT
2.
3.
4.
5.
6.
7.
GLANCE ON BUILDING PICTURES
OBSERVATIONS
REASONS
TESTS TO BE RECOmmENDED
SUGGESTED mEThODS
CONCLUSION

3. Salient Features:
 Quarters located at KAZIPET Railway station
 G + 2 Building with 4 Flats at each level
 Constructed Building more than 30 years ago
 All flats are occupied
 Date of inspection: 30-03-2013

4. ELEVATION
REENTRANT CRACKS

5. VERTICAL & DIAGONAL CRACKS

6. CORROSION OF
RIENFORCEMENT

7. LINTEL FAILURE

8. CRACK IN THE WALL
CRACK IN THE FLOOR

9. WATER LEAKAGE FROM DRAINAGE PIPES

10. PLANT
GROWTH

11. NEW
WATER TANK
DEMOLISHED OLD WATER TANK (expected)

12. DAMPNESS
SPALLING FROM SLAB

13. VISUAL
OBSERVATIONS:
 Structural cracks are observed in walls
 Spalling & Peeling of cover
 Corrosion of Reinforcement
 Settlement of the floor
 Plant & Algae growth
 Severe Dampness in the walls
 Discolouration of the building

14. REASONS:
 Major cracks in compound wall due to differential
settlement of the foundation
 Reentrant cracks due to Stress concentration
 Spalling & Peeling of cover
 Corrosion of bars due to seepage of water
 Settlement of the floor due to poor soil conditions
 Plant & Algae growth due to leakage of water from pipes
 Dampness in the walls due penetration of water from tank
 Poor Maintenance & No repair at initial stages of damage

15. Tests to be
Recommended:
 Ultrasonic Pulse Velocity test
 Half-cell Potential test
 Rebound Hammer Test
 Carbonation test
 Resistivity test

16. Suggested Repair
Techniques:
o Cracks: Stiching Method
o Spalling & Peeling: Bond coats & Grouts
o Corrosion: Proper cover & coating
o Dampness: Thin Polymer & Epoxy overlays
o Settlement of floor: Proper Soil Compaction
o Plant & Algae Growth: New Drainage pipes

17. Conclusion:
 As Many parts of the building are damaged immediately
repair has to be done.
 The Repair Techniques improve the remaining life of
the structure up to a considerable extent.
 Hence This Moderately damaged building has to be
tested in detail and appropriate methods are to be
applied.
 Periodic inspection & Maintenance

18. THANK YOU
R.RAGHAVENDRA