Asset management Flashcards

1
Q

Why do we need AM?

A

Provide the desired level of service in the most cost effective manner for present and future customers
provide long term financial stability
to identify critical assets so they can be managed to prevent failure
to be prepared for a disaster response

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2
Q

What are some issues in AM?

A

demand, technology, climate , construction and maintenance of existing infrastructure

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3
Q

Describe the Asset managment plan (AMP)

A

the master strategy/road map for detailing what works need to be completed to provide the appropriate Los, in the context of growth, demand and infrastructure decay

sets out the financial plan, the amount of spending, where it will be spent and the outcomes
Changes over time
supported through monitoring

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4
Q

What does the AMP contain?

A
Management strategy
key assumptions
LoS and performance standards
growth forecasts
asset portfolio description
financial forecast
improvement plan
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5
Q

Why is it important to value community assets?

A
To enable the best AM decision making
measuring depreciation
establish funding/pricing
risk management
sales and purchase
financial reporting
benchmarking
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6
Q

Why is long term planning important

A
Provides inter generational equity
maintains services
capital costs is not the most significant, usually the maintenance cost is 
smooth funding requirements
no surprises
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7
Q

what are the 3 levels of investment planning?

A
strategic = service standards, financial requirements, support policy development
tactical = investment mix, alternative management regimes, assess risk and assumption effects
operational = detailed programme of works, evaluate effects and collect information
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8
Q

what are the steps of renewal and planning?

A

collect data, report, consider maintenance options, finalize field decisions, project management execution

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9
Q

why is it important to manage risk and give some examples of risk

A

poor risk management = distrust from the community

Political,legal, commercial, technical, people, natural

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10
Q

What are the impacts of risk

A

business continuity, los, noncompliance, accidents, loss of income, public relations, prosecution

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11
Q

what are some treatments of risk

A

risk mitigation, risk avoidance ,acceptance, reduciton and transfer

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12
Q

draw the risk based decision making diagram

A

refer to book

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13
Q

What is the importance of LOS

A

LoS establishes a benchmark
benchmark is useful to learn from top performers and to adopt the best practices for effective performance improvements.
Performance measurement is useful as it collects and compares performance data relative to the past.

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14
Q

describe the two ways for life cycle of the road

A

refer to the book

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15
Q

why do unbound layers undergo densification?

A

occur because traffic will travel in two narrow wheel paths, extra compaction occurs in the middle layers

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16
Q

Describe pavement deformation

A

premature deformation of the surface layer
premature rutting due to surface related
premature deformation within the base and subbase
deformation due to post construction compaction
subgrade deformation due to traffic
deformation due to active subgrade and settlement collapse

17
Q

Describe shoving

A

shear failure due to shoulder issues, “shoving” material up top.

typically caused by : excess asphalt, too many fines, rounded aggregate, too soft asphalt, weak granular base, lack of shoulder support, water ingress

18
Q

describe alligator cracking

A

occurs when pavement is unable to support the loads, either the pavement has gotten weaker via water infiltration or the loading has exceeded the design or poor construction.

19
Q

Describe block cracking

A

Occurs due to asphalt pavement shrinking and expanding in temperature cycles, typically due to water infiltration

20
Q

describe longitudinal cracking

A

poorly constructed joints

shrinkage of the asphalt

21
Q

Rutting

A

linear surface depression caused via deformation of the subsurface layers.
Caused by the insufficient thickness, poor compaction and weak mixtures

22
Q

Bleeding

A

ratio between the aggregate voids and the bitumen volume is not enough, therefore the lack of voids forces the bitumen to surface under loading. This will fill the macrotexture, reducing the skid resistance and loss of surface texture

23
Q

Ravellling

A

Bitumen oxisdises, becoming more brittle and losing bonding with the aggregate.

24
Q

Potholes

A

bowl shaped holes caused by the localized disintegration of the pavement surface
segregation cracks or failed patches may serves as the start of a pothole

25
Q

edge breaks

A

lack of pavement shoulder support

26
Q

proactive rehab?

A

granular overlays, rip and relay,pavement stabilization, asphaltic overlays or grader laid asphaltic materials
pavement replacement

27
Q

Periodic maintenance

A

secondary coat seals
resurfacing
thin asphalt overlay

28
Q

Reactive maintenace

A

pavement digouts ,patching and pothole repairs
pre seal repairs
unsealed shoulder maintenance on sealed roads
pavement maintenance at railway level crossings together with any associated servicing fee
Protective covering over the road where stock cross at grade
road protection against stock damage

29
Q

Preventative maintenance

A

cleaning of kerb and channel, cesspits
routine checks and repairs, reinstatement of surface water and subsurface drainage
stream cleansing and debris removal to maintain watercourses through culverts