Test on St. Torcato Church. Non-destructive, minro destructive and destructive test conducted on St. Torcato church for measuring its strength and capacity of materials and qualities of material which is used to make the church. its rehabilitaion and renewation also resulted due to these test

1. ST. TORCATO CHURCH
Presented by
Ashlin T V

2. INTRODUCTION
 In St. Torcato village
 7kms north of Guimaraes, Portugal
 Construction started in1871
 Hybrid architectural style
 Built in masonry with locally available natural granite stones and
dry joints
 Three leaf composite wall
 Doors and windows have arch openings
 wooden truss over the vault of the nave
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3. 3
Rose Window
East and West
Square Towers
Fig 1. South Façade Face of St. Torcato Church

4. Defects typology
 Structural problems
Cracks,
Open joints
Compression cracks
 Non – Structural Problems
Lime mortar Seepage marks
Algae growth
Birds
Vegetation
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5. Non-Destructive Techniques (NDT)
 Visual Inspection
 Sonic Testing
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Fig 2. Hammer to
generate pulse for
sonic test
Fig 3. Installation of
Grid for sonic test
Fig 4. Distribution of sonic
velocities
Fig 5. Histogram of velocities

6.  Cover meter / Ferro scan
 Coin tap test
 Ultrasonic Testing
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Fig 6. Testing of wall by
Ferro-scan
Fig 7. Details of imported
Ferro-scan survey
file on computer
Fig 8. Performing
Ultrasonic Test
Fig 9. Ultrasonic Test crack
values

7.  Acoustic Emission
 Resistivity measurements
 Infrared measurements
 Conductivity Measurements
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Fig 10. Detection of hidden tie rods using thermal
vision
Fig 11. Detection of hidden tie rods using
thermal vision

8.  Geo-radar
 Schmidt Hammer Test
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Fig 12. Target wall
Fig 13. Radar-gram profile showing
several
voids
Fig 14. Schmidt Hammer
Table 1. Schmidt hammer test results for
San Torcato Church

9. Minor-Destructive Testing (MDT)
 Single and Double Flat jack tests
 Dilatometer techniques
 Endoscopy
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Fig 15. Execution of endoscopic investigation (left) and it’s endoscopic
picture (right)

10. Destructive tests
 Compression tests
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Table 2. Granite compression test results

11. Conclusions
 Study of historic documentation revealed the history of the
building of the Church and helped in the interpretation of the
testing results.
 Useful for estimating the quality and strength of the structure
 Should have periodical monitoring and maintenance works
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12. Thank You
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