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Melissa Marion Mike Milkin Eric Mill Chris Vitone Procedures for Monitoring the Structural Integrity of Venetian Bell Towers.

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Presentation on theme: "Melissa Marion Mike Milkin Eric Mill Chris Vitone Procedures for Monitoring the Structural Integrity of Venetian Bell Towers."— Presentation transcript:

1 Melissa Marion Mike Milkin Eric Mill Chris Vitone Procedures for Monitoring the Structural Integrity of Venetian Bell Towers

2 Introduction  Belltowers being neglected –physical and cultural danger  Past research - visible attributes –Simplistic ranking for restoration  We will monitor these towers –More technical way of ranking need for preservation –Will be an enhanced methodology –Will redo previously evaluated towers –Will evaluate some new ones, if feasible ERIC

3 MEL General Bell Tower Information  107 towers  Oldest – 7 th Century. 11 th  Newest – 9 th Century  Tallest – 314 feet  1994 & 1995 – 23 towers

4 MEL Social Impact  History  Tall  Culture –Celebration –On the hour –Festivals  Civic Tower of Pavia

5 Past Uses of Towers  Past Use  Cause of Neglect  Proposed Future Use MIKE

6 Features  Base –Composed of non porous rock/clay  Shaft –Built with brick, metal supports.  Bellfry –Built of brick with Lavish stone or clay decorations  Spire –Slanted roofs were built with c lay shingles. MIKE

7 WebGIS Database for Bell Towers  Collection/examination of existing data –1994 &1995 IQP Data –Earthwatch  Design a unified database schema  Software for each level –Microsoft Access – data warehousing –Map Info – GIS Maps –WebGIS – Port into online format ERIC

8 Structural Integrity Issues  Wind –Dynamic Force –Strain on tower walls  Bells –Effect on bell frame –Vibrations translate to walls CHRIS

9 Structural Integrity Issues  Uplift Pressure –Rising tides –Changing of aquifers  Ground Stability –Variation in density CHRIS

10 Instrumental Measurements  Allow quantitative assessment of tower  Perform measurements –Wind Force –Bell Vibrations –Uplift Pressure –Soil composition  Duration of measurements CHRIS

11 Visual Measurements  Correlate Visual and Instrumental Parameters  Perform measurements –Dimensionality –Inclination –Damage assessment CHRIS

12 Revised Methodology ERIC  Analyze the validity of our measurements –Look at correlations between visual and instrumental measurements –Decide which are worth continuing  Modify old methodology for evaluation of belltowers –Factor in our valuable measurements

13 MIKE Analysis  The influence of natural forces on the Tower  Visual measurements vs. Instrumental  Refine the set of visual measurements

14 MIKE Instrumental Measurement  Measurement times  Parameters  Predicting influencing factors. Wind30mph30mph15mph1mph Ground Pressure 15n40n17n16n Bell V. 0m/s/s4m/s/s4m/s/s0m/s/s TowerAcc.2m/s/s7m/s/s3m/s/s1m/s/s Wind30mph30mph15mph1mph Ground Pressure 15n40n17n16n Bell V. 0m/s/s4m/s/s4m/s/s0m/s/s TowerAcc.2m/s/s7m/s/s3m/s/s1m/s/s

15 MEL Refinement of Visual Parameters  From the Results: List –Suggested Visual Parameters –Which Towers?  Work in Progress

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