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Inspection > HAZARDOUS AND DELETERIOUS MATERIALS > Flashcards

HAZARDOUS AND DELETERIOUS MATERIALS Flashcards

1
Q

What is radon? 

A
  • Natural, odourless, tasteless & radioactive gas
  • Low levels in air but collects in confined spaces like buildings
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2
Q

What is the risk of radon exposure? 

A

Long exposure can lead to lung cancer

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3
Q

How is radon mitigated in buildings? 

A

Radon slump
Increased ventilation
Test once a year

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4
Q

Name some common Asbestos Containing Building Materials? 

A

Insulation lagging
Fire cloth blanket
Insulation boards
Ceiling linings
Cladding

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5
Q

Name some other deleterious materials? 

A

Munic
Calcium chloride cement
High Alumia cement

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6
Q

What is high alumina cement, and what is its risk? 

A
  • Used in 1950-70s for cement T bars for floor and roof decks due to rapid strength development
  • Vulnerable to chemical attack & reduced strength
  • Cases of it collapsing - so banned
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7
Q

What is calcium chloride cement, and what is its risk? 

A
  • Accelerated for cement to set (used until 1970s)
  • Caused corrosion of embedded material
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8
Q

What is mundic, and what is its risk? 

A

Mineral Mine waste found in Devon & Cornwall
Used in aggregate in concrete blocks up until 1950s
Chemical change caused concrete to deteriorate

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9
Q

What are the contamination risks that need to be considered on property inspections? 

A

Asbestos
Legionella (A/C or other supplies)
Chemicals

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10
Q

How can contamination exist at a property?  

A

From previous tenants (e.g processing)
Asbestos
Underground storage tanks can contaminate soil and ground water (Industrial sites)
Methane gas

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11
Q

 What are contamination signs that a surveyor should look out for? 

A

Strong or Unusual odours
Discoloration of soil or water
Vegetation damage
Surface staining
Nearby contaminated sites

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12
Q

What are three typical phases of investigation for contamination?

A

Review site history
Carry out investigation to identify extent of contamination
Remediation report setting out cost and options

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13
Q

When instructed to value a contaminated site, what approaches should be considered? 

A
  • Do not provide advice until you have received a specialist report
  • Caveat advice with appropriate disclaimer highlighting assumptions
  • Deduct remedial costs from gross site value
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14
Q

What is Land Remediation Relief? 

A

From of Tax that applies to contaminated or derelict land in the UK

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15
Q

What are deleterious/hazardous materials?

A

Materials that are harmful to health

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16
Q

What are signs that deleterious materials are present?  

A
  • Brown staining on concrete
  • Spalling or cracking of concrete
  • Peeling of flaking of paint on window frames doors etc (lead-based paint common before 1980s)
17
Q

What should you do if you discover hazardous materials on inspection? 

A

Recommend a specialist attends to investigate and provide a a remediation report
Make appropriate assumptions

18
Q

What should you do if you discover asbestos? 

A
  • Check asbestos survey to see it is on register, if not, instruct asbestos survey
  • If undisturbed does not need to be removed (removal can create hazards and is stable when intact - seal up)
19
Q

What is Japanese Knotweed? 

A

Fast growing, invasive plant where stems goes very deep underground

20
Q

Why is Japanese Knotweed a concern for property owners and managers? 

A

Difficult to control, expensive to eradicate (need specialist), damages hard surfaces, foundations and tarmac
Lenders may refuse to loan if it is present at property

21
Q

What does Japanese Knotweed look like? 

A

Purple stem, green leaves, white flower produced in late summer early autumn

22
Q

What are consequences of letting Japanese Knotweed spread?

A

Criminal offence under Wildlife and Countryside act 1981
Local authorities can issue ASBO & fines

23
Q

What are invasive species that property owners and managers should be aware of? 

A

Japanese Knotweed and Hybrid knotweed

24
Q

What RICS publication relates to asbestos?

A

RICS Professional Asbestos Standard 2021
Full name - Asbestos Legal Requirements and Best practice for property professionals and clients 4th edition 2021

25
Q

What RICS publication relates to Japanese knotweed? 

A

Japanese Knotweed and Residential property 2022

26
Q

When was Asbestos outlawed?

A

1985 - Blue,Brown
1999 - White

27
Q

How would you undertake a contamination survey? 

A

I would not be competent to undertake a contamination survey
If I noted contamination from an inspection, I would take photo and take any details, notifying my client to get a competent individual to review

28
Q

What is RAAC?

A

Reinforced Autoclaved Aerated Concrete
1950s to the mid-1990s primarily used in roofs
Structural Weakness & Limited Lifespan

Inspection (3 decks)

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