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APC PM Pathway > Case study questions > Flashcards

Case study questions Flashcards

1
Q

What was the acoustic requirement?

A

The Acoustic Performance Criteria specifies a noise rating derived from a number of readings pursuant to the Acoustic Testing Regime which rating does not exceed ‘NR’ R5 in each of the Auditorium (including the Control Room) and the Rehearsal Room separately. This is subject to testing.

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2
Q

What is box in a box construction?

A

Box-in-box is a construction technique that allows a space within a space to be insulated against unwanted noise and vibration.
The technique involves constructing a room within a building structure, so that the inner room is acoustically isolated from the outer.

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3
Q

What is the building frame made from?

A

It was a steel frame with composite slab. By joining the two materials together result in a highly efficient and lightweight design.Composite systems also offer benefits in terms of speed of construction

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4
Q

What are secant pile foundations?

A

A secant pile wall consists of primary piles which are cast first also called female or soft. The reinforced load bearing piles are drilled to intersect the female piles/columns and are called male or hard.
They provide:
Increased wall stiffness compared to sheet piles.
Can be installed in difficult ground (cobbles/boulders).
Less noisy construction

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5
Q

What other kind of foundations are there?

A

There are two types:

  • Shallow foundation: Wall footing, combined footing, raft or mat foundation, cantilever foundation.
  • Deep foundation: piles, pier or caisson
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6
Q

Can you explain what a two stage tender is ?

A

Two stage tendering is a method of procurement where the employer seeks to appoint a contractor at an initial stage of the project based on an outline scope of work. There is then a second stage when the employer seeks to appoint a contractor for the construction works under a building contract.

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7
Q

What other tender processes are there?

A
  • Open tendering : allows anyone to submit a tender for the services required.
  • Selective tendering: Selective tendering only allows suppliers to submit tenders by invitation
  • Negotiated tendering: Negotiating with a single supplier may be appropriate for highly specialist contracts, or for extending the scope of an existing contract.
    Framework tendering: Such arrangements allow the client to invite tenders from suppliers of goods and services to be carried out over a period of time on a call-off basis as and when required.
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8
Q

Tell me about the RIBA Stages

A

0 - Strategic Definition - Clients requirements confirmed
1 - Preparation and Briefing - Project brief approved by the client
2 - Concept Design - architectural concept approved by the client and aligned to project brief
3 - Spatial Coordination - architectural and engineering information spatially coordinated
4 - Technical Design - all design information required to manufacture and construct the project completed
5 - Manufacturing and Construction - Manufacturing, construction and commissioning completed
6 - Handover - Building handed over, aftercare initiated and building contract concluded
7 - In Use - Building used, operated and maintained efficiently

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9
Q

Explain the role of the CMT

A

They are appointed by the client following novation of the design team to check the building is being constructed as per the contract and raise and quality or design concerns.

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10
Q

What is novation

A

Novation is a process by which contractual rights and obligations are transferred from one party to another.

Benefits:
Continuity of design

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11
Q

What is magnamite are what are its uses?

A

It is a heavy natural aggregate which increases the density of the concrete by about 60%.

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12
Q

What is BREEAM?

A

Building Research Establishment Environmental Assessment Method. BREEAM is the world’s leading standard for design, assessment and certification of sustainable buildings. BREEAM addresses all aspects of environmental sustainability including management, health & wellbeing, energy, water, materials, waste, ecology and pollution. They range from unclassified to outstanding.

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13
Q

Why did you use JCT design and build?

A

Design and build can be advantageous in terms of time as it allows the overlap of design and construction reducing the overall project delivery time, contractor takes on most of the risk.

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14
Q

What are the other contract types?

A

Minor works contract,
Major works contract,
Management building contract
Construction Management contract

For this an alternative contract would have been the major works contract

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15
Q

What is your leadership style?

A
  • Adaptable leader to the situation and individuals
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16
Q

What is your negotiation style

A

I am collaborative, I look for a win win, I establish what the other party is looking for and try to find a way to provide it whilst obtaining my own goal from the negotiation. Overall, I look to find a solution which doesn’t damage a relationship and both parties win. If I strongly disagree I can be more competitive (Win/Lose).

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17
Q

What are the RICS personal and professional standards?

A 
Competence
Ethical Behaviour
Service
Solvency
CPD
Information to RICS
Cooperation
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18
Q

What is a PCSA

A

Precontract services agreement between the contract and client

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19
Q

What are the benefits of the PCSA?

A
  • Improve the buildability and
  • Cost-certainty of the design
  • Creating a better integrated project team and reducing the likelihood of disputes.
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20
Q

What services were included in the PCSA?

A
  • Review technical requirements of the project,
  • Review risk register, pr
  • Develop a programme,
  • Lead the design,
  • Advise on specialist consultants and sub contractors,
  • Assist with VE,
  • Assist with proposing alternative materials or methods of construction which would provide additional benefits,
  • Review planning conditions,
  • Recommend a procurement strategy for works packages,
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21
Q

What is concrete made of?

A

Cement, water and aggregate

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22
Q

What other kinds of procurement routes are there?

A
  • Design and Build
  • Traditional - Design first then build
  • Construction Management: A construction manager is responsible for the construction. The Client is in contract with the subcontractors. The construction manager has no contractual link with the subcontractors
  • Contract Manager route: Similar to the above apart from the contract manager has contractual links to the subcontractors as oppose to the Client.
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23
Q

What are the contract docs made up of?

A
  • Contract Itself
  • Schedule of Amendments
  • Contractors Proposals
  • Employers Requirements
  • Contract Sum Analysis
24
Q

Who is the president of RICS?

A

Timothy Neal

25
Q

What are the key JCT contract headings?

A 
Agreement
Recital
Articles
Contract Particulars
Attestations
Conditions
Schedules
26
Q

What are the CDM Regulations

A

The Construction (Design and Management) Regulations (CDM Regulations) ensure that health and safety issues are properly considered to reduce risk of harm to those who have to build, use and maintain structures.

27
Q

Who is a duty holder under the CDM Regulations?

A 
Clients.
Designers. 
Principal contractors.
Contractors. 
Workers.
28
Q

What was the structure of your building? and what are the benefits of this structure?

A

Steel frame with a composite slab

It is a lightweight frame that spans long distances.

29
Q

What is the structure of the basement on Soho Place?

A

Secant pile wall with a raft slab

30
Q

What type of waterproofing was used on your building and what are the other types?

A

The super structure had a waterproofing membrane and the basement had a cavity drain. Another is
- Monolific.

31
Q

What form did you use for the PCSA?

A

A JCT PCSA form

32
Q

What stage information was issued for the PCSA?

A

Stage 4 - Technical Design

33
Q

What bonds are in your contract?

A

Off site materials bond
Parent company guarantee bond - Parent company is Suffolk Prtners Corporation
Retention bond

34
Q

How many points do you need for BREEAM Excellent?

A

70%

35
Q

How did you look to minimise the impact of site activity on the local area?

A

With a construction management plan (CMP)

36
Q

What is a construction management plan?

What is included in a CMP?

A

The purpose of a construction management plan is to outline the approach for managing construction works. The plan ensures that possible impacts that may arise from the works have been appropriately identified, managed and minimised.
It includes:
Drawings and plans.
Access arrangements for vehicles, plant and personnel.
Location of offices, unloading/loading areas, reception, site facilities, and so on.
Screening and hoarding details.
Storage areas.
Control measures for dust and mud.
Site waste management plan.
Lighting of the site.
Drainage control measures.
Access and protection arrangements for the public.
Points of contact and complaints procedures.

37
Q

What is VE?

A

Value Engineering is a process of seeking out optimum value for both initial and long-term investment

38
Q

What typically happens at RIBA Stage 4?

A

RIBA Stage 4 is technical design - Stage 4 is about developing the information required to manufacture and construct the building. This requires information from the design team and the specialist subcontractors.

39
Q

What demolition process was used on the previous building Astoria place?

A
  • Check
40
Q

What third party agreements were in place?

A

There was a collaterial warranty between LOR and TfL and Nimax and LOR.
There was a parent company guarantee.
There was a party wall agreement with the adjacent site.
There was an oversailing agreement with the church

41
Q

What is a collateral warranty?

A

• Collateral Warranties create a contractual relationship between parties where there would otherwise not have been any.

42
Q

What is the difference between a Collateral Warranty & Third Party Rights

A

• Third Party Rights provide a person who is not a party to a contract to enforce the benefits of terms of that contract.
• In one sense, there is no difference in practice between collateral warranties and third party rights on a construction project; either give effective construction security to third parties.
• However, collateral warranties remain popular, in part because:
o They are familiar - Historically, construction lawyers are more familiar with collateral warranties. Once a collateral warranty is formally entered into, it is a contract like any other.
o It may be easier to grant step-in rights - If a borrower (such as a developer) becomes insolvent, a funder would want to be able to step in to its shoes to complete and sell the project for the best price.

43
Q

What is a party wall agreement?

A

An agreement about wall which is shared by two different land owners.

44
Q

What is practical completion?

A

When in the opinion of the EA the works or sections have achieved practical completion then they should issue a practical completion notice, which is key notice under JCT.
• Before this is issued the contractor must have handed over copies of the O&M manuals to the client/employer and the health and safety file
• The certificate cannot be issued conditionally
• Often issued alongside a snagging list of works outstanding
• Once issued the PC certificate cannot be rescinded
• The issue or non-issue of the certificate can only be challenged through dispute resolution methods

45
Q

What happens at PC?

A
  • The contractor‘s licence to occupy the site ends – the employer takes possession of the site
  • The risk of damage to the works is shifted to the employer from the contractor
  • Half the retention is released
  • The rectification period begins
  • Contractor is no longer obliged to insure the works
  • The employers right for damages caused by delay ends. No LD‘s can be taken after PC.
46
Q

And what about if the works are not considered to be complete at PC?

A
  • Non completion certificate – should be issued if the contractor fails to complete the works /section by the relevant completion date
  • Breach of contract entitles the employer to damages
  • If time is of the essence then any failure to complete on time may cause the employer to terminate the contract
  • LD‘s must not be a penalty – genuine pre estimate of loss only
47
Q

Why was casting in-situ a risk and why did LOR price for this in their tender? Should it not have been considered before?

A

LOR developed their design significantly through Stage 4, this was not so much that casting in-situ wouldn’t work, rather that there was a potential risk that could be mitigated and bring in additional benefits to the project.

48
Q

How would the vent shaft restrict access?

A

The vent shaft is adjacent to what will be the acoustic wall. You couldn’t pour in a single height in one pour – repeat process over multiple occasions – to do with pressure, the higher the pour the more pressure you carry which means the formwork would need to carry more pressure. If concrete is poured from too much of a height it segregates which is not accepted – would need a tremi (long tube to pour through like we used for the piles).
The twinwall - Is poured mid-height in two pours to stop the walls from failing (due to pressure from the pour).

49
Q

What is the process for pouring concrete in situ?

A

Typically the concrete is mixed off-site at a batching plant and transported to site in HGV’s. Very little is fabricated or constructed off-site, it is typically a complete on-site approach that involves erecting timber shuttering, steel reinforcements are then delivered to site and pieced together. Steel fixers and carpenters are required to fit the starter rebar in to the slab and then install secondary formwork before the concrete is poured between the shuttering.

50
Q

What does British Standards say about concrete achieving its optimal strength?
Do you have to wait 28 days?

A

The BS means it has to have reached its optimal strength in 28 days. If you don’t need to wait 28 days if optimal strength is not required for instance, generally.

51
Q

What are the standard quality control procedures for concrete?

A

It is a standard quality control procedure to make test cubes from the fresh concrete, which are then stored under controlled conditions and tested (generally at an age of 28 days.

52
Q

How are precast concrete panels made?

A

Pre-cast concrete is a manufactured concrete mix, which is mixed off-site poured in to re-usable moulds in which prefabricated high strength rebar sits. The panels are then left to cure inside in optimal conditions before being transported to Site ready for installation. The rebar is already fitted in to the precast panels thus allowing the panels to slot together.

53
Q

How does the hybrid system work?

A

A twofold approach using precast and insitu cast concrete to create a bespoke solution adapted to the theatre consisting of two types of wall, as appropriate: a combination of twin wall and insulation, and an acoustic wall.
The acoustic wall would consist of precast panels of increased density and the use of magnetite, increasing acoustic insulation against the vent shaft wall thus creating a barrier for the noise from the vent shaft. The panels would be transported to site in HGV’s and could be stored until ready for installation. It would not be possible to install insulation to this area due to access restrictions against the vent shaft wall.

The other three auditorium walls would be constructed using a twin-wall system which is a hybrid of precast and in-situ concrete walls. Each prefabricated unit comprises of two reduced depth precast concrete panels with a cavity between which is linked by steel reinforcement. The units are transported to site and craned in to place to form a wall. Once units are in place the cavity (where the rebar sits) is filled with in-situ concrete to complete the structural wall.

54
Q

What is the difference between rebar and formwork?

A

Rebar, also known as reinforcement steel and reinforcing steel, is a steel bar or mesh of steel wires used in reinforced concrete and masonry structures to strengthen and hold the concrete in tension. To improve the quality of the bond with the concrete, the surface of rebar is often patterned.
Formwork is another word for shuttering. Formwork is the term used for the process of creating a temporary mould into which concrete is poured and formed. Traditional formwork is fabricated using timber, but it can also be constructed from steel, glass fibre reinforced plastics and other materials.

55
Q

How does a cavity gap provide acoustic insulation?

A

Cavity walls effectively “decouple” the main wall assembly components from each other, reducing the ability of sounds to easily transmit through

56
Q

What type of crane was used to lift the concrete panels in ?

A

A tower crane.
Tower cranes: a tower crane is a tall crane used for lifting objects into high places. The boom allows a longer reach over 360degree access. A longer boom reduces the payload capacity. You would typically use a smaller crane to erect a tower crane and attach the main crane to a base support system of concrete. Weather systems could prevent a crane from being operational, e.g. high winds

APC PM Pathway (13 decks)

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