CIVE 527 Tutorial Assignment 1

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