Level 1 and 2 questions Flashcards
What are different methods for identifying risks?
- brainstorming between the design team, all the experience from the design team can identify risks.
- lessons learnt sessions (typically comes under brainstorming)
What are the different methods for assessing risks?
Qualitative analysis:
This includes assessing the risk based on likelihood and magnitude (impact) of the risk happening.
The likelihood is then multiplied by the impact so
Likelihood (3) * Impact (3) = risk rating (9)
Could add a heat diagram to show levels of risk rating (green okay, yellow not so good, amber/red terrible)
What are the different ways for controlling risks?
Redesign
Further site investigation / surveys of risk
Different construction methods
As a QS what is your role in the risk management process?
My role in the risk management process is to understand if there are any risks that have not been thought of and provide cost impacts for risks that are included within the risk register.
How do you reduce risks?
Typical actions to reduce risks can come in the form of:
1) Redesign and combine with VE possibly
2) Change contract type, to transfer risk responsibility
3) Avoid using unproven methods of construction
4) Carry out more detailed design or further site investigation: to improve the information on which cost estimates and programmes are based
What are the 4 main categories of risk under NRM?
Design Development
Contractor Risk
Employer Change
Employer Other
Give me an example for each of those risks in NRM?
Design Development: Allows for a new high spec of finishes for example
Contractor Risk: Allowance to provide for risks associated with site conditions e.g. existing buildings etc
Employer Change: Allowance for use both during design process and construction process to provide allowance for client driven changes e.g. changes in scope
Employer Other: Further client risks like early handover, postponement, termination
What is typically included in a risk register?
Title of risk
Description of risk
Likelihood rating
Impact rating
Cost impact when multiplied by the two
Mitigation actions
Likelihood / impact rating post mitigation
Cost impact post mitigation
How often do you have risk workshops?
For WHBG in pre-contract, there was a risk workshop with the design team every 2 weeks.
In the post contract stage, an early warning meeting was held every week due to the shortened programme and NEC requirements.
What is the further vibration mitigation measures for LTH?
Vibration measures required (isolating pile caps) due to being in close proximity to TfL tube lines.
Way this was mitigated by a further investigation by acoustic consultant to understand whether it was required.
£400,000 risk impact but eliminated once acoustic consultant confirmed this wasn’t required.
What was the likelihood of the vibration risk for LTH?
Pre mitigation it was rated as a 8 rating (scored 2 for likelihood and 4 for impact)
Post mitigation it was a 1 as it wasn’t required.
What assumptions were made for the vibration risk for LTH?
Assumptions made were that if it was to happen, isolating pads would be applied to pile caps only. No other vibration measures would be required.
When including the cost impact of a risk, is it the full amount?
The cost impact of the risk is then multiplied by the probability to give an expected value. The expected value for each risk is then totalled for an overall risk allowance.
Can you name a risk on one of your projects
Yes
1) West Ham Bus Garage, pre contract risk was not meeting the 22nd September 2023 date, impact would be at least 25k a week and probability at the time was likely.
2) LTH - Risk of requiring vibration isolation measures to substructure due to being next to tube line
3) 31BHS risk of existing raised access floor needing to be replaced due to it being in a bad state
How did the risk change over time (LTH vibration)?
Risk was reduced greatly once the acoustic consultant provided a noise and vibration assessment which outlined that this measure was not required
