Construction technology Flashcards

1
Q

What detail is included for a cold flat roof?

A

Covering, timber deck, roof structure, insulation in between, vapour control layer, plasterboard. [Part H].

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How did you prevent potential problems from a cold roof?

A

Ensure there’s enough ventilation throughout the roof.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Where would you expect to see a cavity barrier and why?

A

Typically in the cavity of a wall (also around windows). Prevents the spread of fire and smoke.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What would you need to consider when constructing a partition wall?

A

Installing deflection heads.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is a deflection head?

A

A detail at the top of partitions to allow for structural movement of the floor/roof above.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Langley Quay: Explain the instruction in more detail and what you advised?

A

Office refurb, strip out existing and refurb to Cat A.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Langley Quay: What was included in the higher spec that wasn’t in the standard spec?

A

Option 1: retain suspended ceiling and raised access floor. Option 2: renew ceiling and raised access floor.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Langley Quay: What was the impact of the different design solutions?

A

Higher spec so longer-term investment.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Langley Quay: Any amendments/additions to the MEP?

A

Undertook validation of the existing M&E services – ended up retaining it all.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Langley Quay: Any consideration towards improving EPC rating? What advice did you provide to achieve this?

A

Yes, upgraded it to a B rating from a C rating.
Advised installing LEDs and PIRs as property was close to a B rating and this would likely achieve this – energy consultant was advised for certainty.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Campden Hill Towers: Please explain in more detail the defects identified here. What did you visually inspect?

A

Pre-cast concrete panels were deteriorating to a residential tower block.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Campden Hill Towers: What was the likely cause of the defect?

A

The steel fixings holding the panels up were expanding and damaging the panels (risk of falling debris).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Campden Hill Towers: What was your immediate recommendation to the client following your inspection?

A

Erect crash decking to protect the pedestrians below, in-depth survey to be undertaken (abseil).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Campden Hill Towers: How did you recommend the defect diagnosis works proceed?

A

Had to be undertaken by abseil due to the building height and surrounding area.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Campden Hill Towers: How was disrepair assessed?

A

A survey was undertaken and a report was produced which I reviewed.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Campden Hill Towers: What repair works were ultimately recommended?

A

Remove the existing cladding and replace with new.

17
Q

How did you determine there was lime pointing at Windsor Walk?

A

Sandy colour whereas cement mortar is grey.

18
Q

What type of sand is required for lime mortar?

A

Washed sharp sand.

19
Q

What’s the mix for lime?

A

1:3 lime to sand.

20
Q

What’s the difference between hydraulic and non-hydraulic?

A

Hydraulic is stronger, non-hydraulic is more flexible.

21
Q

When was cement mortar first used?

A

Around the 1800s.

22
Q

What causes spalling brickwork?

A

Water, adding cement mortar over lime (water escapes through brick face).

23
Q

What is the significance of a corbelled chimney design?

A

Mortar is more likely to deteriorate affecting the structure.

24
Q

You mention artificial slates, how do you recognise them?

A

They have straighter and more complete finish compared to natural slates which are rougher.

25
Q

What type of air conditioning was specified on Windsor Walk?

A

Variable Refrigerant Flow (VRF). Why? It doesn’t require ductwork like a Variable Air Volume (VAV) system, it’s more energy efficient.

26
Q

What are the limitations of a VRF system?

A

You can get leaks.