CIVE 527 INFRASTRUCTURE ; RENOVATION AND PRESERVATION TUTORIAL: ASSIGNMENT 1
Feb 01, 2016
CIVE 527
INFRASTRUCTURE;
RENOVATION AND
PRESERVATION
TUTORIAL: ASSIGNMENT 1
CONDITION ASSESSMENT
Condition Assessment: An examination of a
structure for the purpose of identifying and
defining areas of distress
But how exactly do we go about doing
this?!
THE BASICS
For More Details, Consult “Condition Assessment”
module of CIVE 527 course notes
PRELIMINARY ASSESSMENT &
EVALUATION
• Before you can make informed decisions, you require
CONTEXT
• Need as much history as you can get your hands on!
• Review of previous documents/literature available
• History of intervention/maintenance
• Design plans
• Drawings
• Design criteria,
• Soil Investigations
• as-built drawing
PUBLIC INFRASTRUCTURE
OWNERSHIP
• Ownership of infrastructure depends on how exactly it is used and who is using it (Jurisdiction)
• FEDERAL: Société Les Ponts Jacques Cartier et Champlain Inc.
• PROVINCIAL
• Ministère des Transports du Québec National Highways(Primary)
• Regional Highways: (Secondary)
• MUNICIPAL
• Divided between the 19 boroughs and the municipal council
• ARTERIES: City of Montreal
• Local Roads: Borough
INVENTORY
• Majority of Infrastructure built in the ‘60s and ‘70s
• 40+ years of potential deterioration across almost 30,000 km of roadworks
• CITY OF MONTREAL in particular responsible for:
• 27 bridges*
• 41 footbridges
• 21 noise barrier walls
• 14 tunnels (vehicles and pedestrian)
• 213 retaining walls*
• 15 snow deposits
• 22 other types of structures (stairs, culverts, etc)
*LIST OF ONGOING WORK FOUND AT*
http://carte.quebec511.gouv.qc.ca/en/Default.aspx?idreg=6
Distribution of deterioration ratings for the City of Montreal’s transportationInfrastructure, 2014.
INSPECTION REPORTS
• City of Montreal uses qualitative criteria to determine
severity of rating
• Structural and non-structural components evaluated
based on visible signs of deterioration
• Total “deterioration rating” is summed up over all
observed issues and a single score is given to the
infrastructure
• This score is used to compare and prioritise intervention
& monitoring across entire inventory
GLOBAL CRITERIA USED
Deterioration
RatingState General Characteristics
0 to 8 Good
Materials: None of the elements show important signs
of deterioration
Structural behaviour: The majority of elements are
functional
8 to 25Deteriorated
Materials: A small number of elements show signs of
deterioration
Structural behaviour: A small number of elements are
partially functional
25 to 40 Mediocre
Materials: Elements show signs of deterioration
Structural behaviour: Some of the structural elements
are partially functional
40 to 80 Deficient
Materials: A few of the elements are deficient
Structural behaviour: A few of the structural elements
are non-functional
80 + Critical
Materials: Many of the elements are deficient
Structural behaviour: A few of the structural elements
are non-functional (short term intervention if necessary,
complete or partial closing)
INSPECTION REPORT
DETAILS
• All infrastructure is composed of a combination of different elements, both structural and non-structural
• Priorities- Which elements are the worst? Scale of 1 to 6
• Damage rating (E)
• A: Isolated Damage (One or two spots)
• B: Repetitive Damage (In several places)
• C: Generalized
• Material Rating (M)
• Behavioral Defects (C)
• 1- Not performing as designed
• 6- Perfect functioning
VISUAL INSPECTION
• Most important part of preliminary assessment
• Structural Modification
o Previous Repair work visible?
• Material Deterioration
• Structural Member degradation
• Missing cover, braces missing, etc
• Foundation or settlement problems
• Cracking Staining, Crumbling
• Missing Members?
• Obvious Damage
• TAKE PICTURES!!!
ASSIGNMENT 1 RUBRIC
1. Description of building /2
2. Description of loading and performance criteria considered /2
3. Description of preliminary evaluation process /2
4. Discussion of preliminary findings /2
5. Recommendations concerning the need for particular actions /2
DESCRIPTION OF
BUILDING
• Who owns it?
• How is it used/what function does it serve
• Where is it located?
• Whose jurisdiction does it fall under (Federal, provincial,
municipal, borough?)
• What is the building composed of?
• Identify ALL major & minor structural components
• MAJOR- Beams, slabs, columns, retaining walls,
foundations,
• Parapets, sidewalks, drainage systems…
• Identify materials used in construction
DESCRIPTION OF
PERFORMANCE AND LOADING
CRITERIA
• How is this structure used (High priority or low priority)
• Heavy Trucks
• Weight Restrictions?
• Pedestrian use?
• Lane restrictions?
• Thoroughfare vs lightly used structure
• What kinds of conditions is the structure exposed to?
• Near industrial output (acid rains?)
• Car exhaust (CO2)?
• De-Icing salts (Chlorides)
• Extreme water runoff (Erosion/ Freeze Thaw)?
• Vandalism/Accidents? (Structural Defects)
• Fires?
DESCRIPTION OF
PRELIMINARY
EVALUATION PROCESS
What steps did your group take while carrying out
the preliminary evaluation process?
• Prior records consulted?
• Site inspection?
• Other investigation means?
DISCUSSION OF
PRELIMINARY FINDINGS
What are your first impressions of the structure in question?
• General condition assessment?
• Any particular elements or components that stand out?
• Concerning or laudable observations?
ASSIGNMENT 1 DUE DATE
• October 8th @ 6 PM
• Submission via MyCourses
• 1 Submission per group
• Word Count < 400 (10-15 PowerPoint Slides)
• PDF or PPT file