Case Study Flashcards
Was there a Schedule of Amendments on the project? Can you tell me some of the amendments made to the contract?
Yes, the Employer changed the payment provisions by increasing the final date of payment from the default 14 days from the due date to 21 days from the due date
Contract was also amended to incorporate the CDM 2015 regulations - with references to the CDM co-ordinator changed to the principle designer
Why was the project allowed to proceed without any risk allowance?
Its my understanding that the client had a risk allowance pre contract, however due to the project being over budget and the timing constraints to get to contract, the client decided to use this to allow the project to go ahead
5% risk allowance - approximately £3M
Overbudget by £8M - VE £5M Plus £3M risk allowance
How did you challenge the Contractor’s quotation?
The contractor’s quotation was merely a description of works with a lump sum cost of £150k
I asked for evidence to support the cost, i.e. how did you arrive at £150k, how much contamination is there
And they then said that the qty of contamination was unknown and that they would complete the exercise then bill the client.
Can you elaborate on your cost advice for removal of contaminated material?
£30m3 for inert material - however if there was no abnormalities in the dark ground area it was deemed to be included in the contractors cost
£150m3 for contaminated non hazardous
£500m3 for contaminated hazardous
Based on my previous experience - I completed a RIBA Stage 2 Formal Cost Plan 1 for a new build warehouse project in Glasgow that was located in the dockland on a brown field site.
There was a high risk of contamination on this site, so I market tested removal of contaminated substances and included these costs within the risk register.
What were the VE options that equated to circa £100k?
£35k for boundary fencing - over a km of fencing, identified this as over spec’d and VE’d to a less heavy duty fence
The other VE option was a change to the external walls for the sports block - from a sinusoidal cladding panel system with SFS with insulation to a full composite cladding wall system.
Why were the VE options not discovered previously?
The design was heavily VE precontract, however due to the timing constraints the client decided to use all of there risk allowance to allow the project to go ahead at that time.
This meant that further VE needed to be carried out post contract. The VE exercise was ongoing from the design stages through to construction.
The Scientists testing regime, is this not the same as WAC testing?
WAC - Waste Acceptance Criteria
No, as the soil was tested as it was excavated from the dark ground area. the on site testing exercise would also be supervised by an employer’s representative.
Why did you obtain quotes? Why not instruct the contractor what to do
The contractor was continuing to insist that the material be removed immediately to stop the contamination spreading, so rather than instruct the contractor to do it
We wanted to take control of the situation, by employing an independent geotechnical scientist and we thought us obtaining the quotes would achieve best value
Why was two stage tendering used over single stage?
As the project was large scale with a complex design, the Employer wanted to get the contractor on board early to benefit from their expertise of building methodology - as this could help the design
Also timing constraints - as two stage tendering allows tender and design to overlap - the main contractor was appointed at the end of RIBA Stage 2
How were the design team novated? What was contained within the novation agreements?
Through a novation agreement
Scope of works, design responsibilities, post novation fees, insurance requirements - PI etc, attestation pages for signature.
You undertook a VE exercise, what’s the difference between Value Engineering and Value Management?
VE is identifying specific elements and looking for alternatives that achieve better value
VM is a process where you look at the overall project and try do identify alternative options that can achieve better value.
What was the length of time between discovering the bitumen barrels and instruction to the contractor? Did the contractor submit an extension of time?
8 days, no fortunately the works weren’t on the critical path and the contractor was slightly ahead of the programme so no delay was incurred.
If you could go back, how would you ensure that the stakeholders were managed effectively to minimise the risk of key issue nr 2?
I would have ensured that a commercial review stage was introduced to the RDD process to collate any change proposals prior to the items being developed into the designs
If you could go back how would you record these risk allowances and what are the risk categories
If I was involved earlier in the programme I would have conducted a risk workshop and produced a risk register for the project, however there just wasn’t enough time or information available for me to do this when I joined the project.
NRM defines risk into four categories - construction risk, design development risk, client change risk, client other risk
What impact will the COVID-19 pandemic have on the handover if the school term start dates have been missed?
The new campus was due to be handed over in July 2020, then the client had a six week programme to decant from the existing campus into the new campus before the school term started
The new campus was handed over on 9th October 2020 and pupils moved in after the autumn break.
What is dark ground?
Dark Ground is a term used to describe areas of the site that are not captured in the ground investigation report
so for example areas of the site that have existing assets or areas of the site that were not investigated due to access restictions
Could you have made an allowance for dark ground?
Making an allowance for the dark ground would be difficult as the conditions are unknown,
However you could have took a measurement of the full area of dark ground and added an allowance to a risk register,
Although depending on what your anticipated soil classification was, this could be a high costing item.
How would you make an allowance for the dark ground?
Hold a risk workshop with the client and design team
Identified different risk types (design, pre-construction, construction, H&S)
Reviewed the probability of the risk
Impact of the risk on cost time and quality
I allocated a possible cost effect
Then Allocated a risk factor = Probability x (Cost + Time + Quality)
Weighted Cost Effect = Probability x Possible Cost Effect