Case Study Flashcards
What would you typically expect your residential schemes to cost?
£2.5/£3.5k /m2
Why was Single Stage D&B chosen?
The client wanted to have:
- single point responsibility
- no design risk
- cost certainty
- contractors buildability
Can you name some contract amendments on your project?
Payment period
Rectification period
Level of retention
Schedule of Valuation Dates
Talk me through the Cost Planning process?
Review Design Design Queries to disciplines Carry out measurement and pricing Benchmarking Market Testing Present to client
Why wasn’t any cost estimates undertaken prior to the client inheriting the design?
The client had inherited the design along with planning and hadn’t carried out a proper estimate prior to my involvement
When did this key issue happen?
- Inherited design not consistent with clients projects
- Appraisal carried out on non-comparable projects
- Lack of cost control
- Ambitious Programme to start on site
Which elements did you identify for cost savings?
Glazing
External Walls
Roof
How did you back up the elements that could produce savings?
Through benchmarking and market testing.
I would expect to see:
External Walls @ £260/m2 not £300/m2
Glazing @ £110/m2 not £170/m2
The benchmarking seems reasonable at a £/m2, why wasn’t the cost acceptable?
Exceeded my clients budget
Large communal areas made cost look efficient
What planning submission would have been required should you have opted for redesign?
Section 73a - granted planning permission with conditions attached.
Still a new planning submission
Why would planning affect the overall development and how long did you anticipate the delay be?
A redesign would have taken around 12 months as well the new planning submission, this would have caused a delay of 24 months which was not acceptable for my client
What was the allowance you had for the EW and how did you arrive at this?
£400k. Benchmarked against my clients other developments for this type of scope
Did you carry out a PQQ for the EW?
No :
- fairly low cost package with low risk
- was using competent EW contractors
How did you substantiate the £400k for the EW?
Pre-Tender Estimate
Benchmarking
Market Testing
Why did you propose competitive tendering of the EW?
To guarantee my client value through the competitiveness of the tender
Which contract was used for the EW and why?
JCT Intermediate was selected because:
- suits contracts over £250k and under £1m
What were the risks of bringing forward the EW?
Should the cost exceed the allowance there would have been further budgetary issues but the risks were low because:
- Market testing
- Benchmarking
- PTE
- Competitive Tender
How did you control costs throughout the design development?
Through continuous monitoring of changes from Stage 2 in a design tracker.
This monitored aspects of design which incurred costs and help my client make decisions and kept them apprised of movements
What were the performance criteria for the glazing?
1.2- 1.4 U:Value
36-40
How did you ensure that both windows could meet the performance criteria?
I utilised the supply chain when market tested and they confirmed that the performance could be met
Why were SFS and Reinforced Concrete declined as options?
SFS - acoustics meant an expensive acoustic material would be required. This was not non-combustible
RC - price
Why did you opt for Blockwork?
Naturally fire resistent
Acoustics
Cheapest
How did you arrive at the costs for each option?
Carried out measurement of the relevant areas
Market tested the costs
Comparison against the S2 Cost Plan
What were the structural impacts of blockwork?
There was a slight increase to the slab thicknesses on the penultimate and roof slab which was advised by the structural engineer