MC Technical Flashcards
(154 cards)
Can you talk me through the timeframes involved in an adjudication?
- Referring party must service notice of the intention to refer to adjudication
- Within 7 days of issuing notice, they must appoint an adjudicator and issue a referral notice
- There is no statutory requirment for the responding party to respond, however this is usually required and done within 7 days of the referral notice at the discretion on the adjudicator
- The adjudicator has 28 days to reach a decision from the date the referral notice was served, this can be extended to 42 days if the referring party agrees
Regarding the adjudication on Cork Street, talk me through you preparation.
The initial adjudication was in relation to extension of time granted by the contract administrator.
Initially reviewed the referral notice, including the documentation provided.
Examined the delay events claimed in conjunction with what was awarded in contract for discrepencies.
Compiled project communications and documents to support our position and in some cases acknowledge valid points raised by the contractor.
The adjudication specialist further requested backup information for contractor delay events they had identified.
Reviewed the contract documents to help substantiate our position on the delay events.
What were some of the key documents used/referred to during the process?
- Design informaiton issued at contract
- Agreed contractor programme
- Contract instructions / drawing revisions
- Written communications, including emails and meeting minutes
Was the decision of the adjudicator binding?
Yes, the decision of the adjudicator is binding in an adjudication process, unless overturned by arbitration or litigation.
Can you name some types of building foundations?
Strip foundations
Pad foundations
Raft foundations (RC slab)
Piled foundations (mirco, tension, sheet, seacant)
What is underpinning and why might it be used?
Underpinning is a method of strengthening existing foundations
It is often used when existing foundations are undergoing settlement or erosion, to accomodate adjacent buildings, to extend the depth of a building (basement) ro to increase the load of an existing foundation.
In what situations might you consider piled foundations?
Where the structure is heavy and the underlying soil is weak
In areas where settlement issues are common
High water table
Loads of the strucutre are nto uniform
Presence of horizontal forces
What do you know about basements?
Types:
Grade 1: Basic Utility
Grade 2: Better Utility (Drier envirnment)
Grade 3: Habitabal (Watertight and ventilated)
Waterproofing:
Barrier
Structural
Drainage
Can you explain what a top down basement construction is?
On Bishopsgate house this involved building:
1. Seacant piles to form the retaining walls of the basement and bored piles at intervals.
2. The ground floor slab was then cast in conjunction with the pile caps before excavation took place.
3. The building was then excavated within the perimeter piles and under the gorund floor slab.
4. Lower level slab was the last item to be cast.
Can you name some of documents that form part of the building regulations?
- Approved document A - Structure
- Approved document D - Toxic substances
- Approved document E - Resistance to the passage of sound
- Approved document L - Conservation of Fuel and Power (2nr volumes, dwellings and building other than dwellings)
- Approved document M - Access ato and use of buildings (2nr volumes, dwellings and building other than dwellings)
- Approved document P - Electrical safety
Can you talk me through some fo the adv and dis of concrete v steel frames?
Steel
- Faster to erect
- Recyclable
- High strength to wieght ratio
- Long span of beams
x Lower load bearing capacity
x Fire protection might be required
x Price volatility
x Poorer acoustic and thermal properties
Concrete
- Fire protection
- Cladding can be fixed directly
- Good sound and heat insulation
- High compressive strength
x Requires formwork
x Slower to construct in-situ, also long curing time and weather dependant
x Requires a bulky structure
x Lower horizontal span compared to steel
Can you name some different types of roof structures?
Gable Roof - Sloping downwards in two parts at an angle from a central ridge
Hipped Roof - A roof that slopes upward from all sides of the structure, having no vertical ends
Mansard Roof - Steep front face pitch with a shallow or flat roof on top
Why was an acoustic enclosure required on your project at Albion Street?
It was a planning approval condition that had to be discharged.
The design involved several condensing units located on the roof which needed to be surpressed to avoid noise nuisence to the eventual and surrounding residents of the building.
How did you benchmark the acoustic enclosure costs on Albion Street?
The cost for this item was capturing as a defined PS in the contract.
When this was presented by the contractor to be a fixed cost, initally I used internal OCE, PTE and Tender data to assess the reasonableness of the cost at a high level, noting the bespoke nature of the item meant like for like caomparisons were difficult.
It was established the costs presented were well above any market data we had so as well as asking the contractir to seek alternative costs, I used the design information that we had to seek direct quotes from 3nr other suppliers.
This allowed a more like for like comparison and could be assessed on a more elemental basis, including things like, carriage, plant support system and the enclosure itself
What are some of the cost elements of internal partitions?
- Timber/Metal frames/studs
- Insulation
- Ply/plasterboard layers
- Tanking/waterproof layer
- Labour
What is approved document E? How does this effect walls and partitions?
Resistance to the passage of sound
Outlines the minimum sound resistance of internal walls and partitions
Differing levels dependant on the function of the wall ir seperating two dwellings, sperating rooms withn the same dwelling, seperating bathrooms etc
What were the types of foundations used on View Road, how did you cost these?
View Road is a new build development where the existing house, and foundations were demolished in the first instance.
It had a mix of foundation types to suit the structure above and in consideration of the levels and proximity to adjacent properties which was very close to the site boundary
Strip foundations, pad foundations and raft foundations were used in various locations. Part of this startegy was dictated by the inclusion of a car garage as part of this scheme, retaining walls were also specified to help faciliate the levels of the existing site which sloped across the property.
What are some cost considerations of a steel frame construction?
- Cost of steel itself
- Size of steel columns and beams proposed, length and weight
- Site conditions and access
- Number of connections required / design complexity
- Fire protection required
Talk me through your analysis and advice on the ASHP solutions at Bishopsgate House
ASHP were initially explored as an option as the client raised concerns of the ongoing costs required to heat the building.
This helped inform the basis of the client’s requirements, with the life cycle cost holding a higher importance than the inital up front cost.
We already had an agreed cost for a gas boiler system which was used as the basis for comparison, this required an initial analysis to isolate the elements that would no longer be required in lieu of ASHP’s.
The contractor had provided an alternative cost for an ASHP system, incl a detailed breakdown of plant and equipment required.
Also had to consider location of services which was an additional E/O cost.
Decision was required quickly in order for works to progress, so life cycle analysis was intially carried out based on the contractors submitted costs.
This involved approaching appointed consultants for specialist input beyond my own scope to analysis the required running outputs of the building. I was then able to use this information to assess a payback period for the additional investment required for ASHP’s.
This ended up being 3.7 years with savings of £65k/year thereafter and as the building was intended to be the client’s long term residence, I advised the client the ASHP’s were the best option, noting final costs were to be agreed.
What is life cycle cost?
A combination of upfront capital costs, operational costs, maintance costs, replacement costs and disposal costs
What is a payback period and what was the payback period on Bishopsgate House?
The length of time required for an investment to recover its initial outlay in terms of profits or savings
The payback period for the ASHP investment on Bishopsgate House was 3.7 years with savings of £65k/year thereafter
What are the mian differences between JCT and NEC contracts?
NEC contracts are generally more flexible
NEC contracts have more pricing options
NEC contracts generally have a more collaborative approach
JCT contracts focus more on risk alloacation and defining roles
Generally, JCT contracts are more suited to building works while NEC are used for engineering projects
What are the insurance requirements of a JCT contract?
Employer’s Libaility Insurance
Public Liability Insurance
Insurance of the works and existing structures (Option A, B & C)
Professional Indemnity Insurance
What are some key timeframes to consider as part of an extension of time claim?
- Has a relevent event occured?
- If so, has the contractor notified the CA/EA/Client in good time?
STandard JCT implies this must be immediate “forthwith”. Important to check for wording in any amendments as this iscommon. - CA/EA generally has 12 weeks to decide on any extension of time claims, suitably substantiated