1.
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2. Contents Robust Details: Brief Review of Part E
Part E Robust Details
Contents
Robust Details:
Brief Review of Part E
Part L and Regulatory Change
Sustainability, Noise and Regulation
A Robust Details Approach
Conclusions

3. Plot Registrations The Scheme Part E Robust Details

4. Plot Registrations - 2005/6 RD wall registrations
Part E Robust Details
Plot Registrations /6
RD wall registrations
(June Dec 2005)

5. Plot Registrations - Walls
Part E Robust Details
Plot Registrations - Walls
RD wall registrations
(June Dec 2005)

6. Plot Registrations - Floors
Part E Robust Details
Plot Registrations - Floors
RD wall registrations
(June Dec 2005)

7. Plot Registrations - Combinations
Part E Robust Details
Plot Registrations - Combinations
RD wall registrations
(June Dec 2005)

8. Performance Monitoring
Part E Robust Details
Part E Robust Details
The Scheme
Performance Monitoring

9. Performance Monitoring
Part E Robust Details
Performance Monitoring
3,500 Dwellings Tested
25% of Sites Inspected

10. Current Robust Details
Part E Robust Details
Part E Robust Details
The Scheme
Current Robust Details

11. Masonry Walls Part E Robust Details
The details are categorised into separating walls and separating floors as well as the form of construction.
The first section being masonry separating walls.
There are currently six cavity masonry separating walls, the variations relating to:
type of blockwork;
type of finish

12. Timber and Steel Frame Part E Robust Details
The details are categorised into separating walls and separating floors as well as the form of construction.
The first section being masonry separating walls.
There are currently six cavity masonry separating walls, the variations relating to:
type of blockwork;
type of finish

13. Masonry Floors Part E Robust Details
The details are categorised into separating walls and separating floors as well as the form of construction.
The first section being masonry separating walls.
There are currently six cavity masonry separating walls, the variations relating to:
type of blockwork;
type of finish

14. New Registrations Suspended w.e.f 1st November 2006
Part E Robust Details
Masonry Floors
New Registrations Suspended w.e.f 1st November 2006
The details are categorised into separating walls and separating floors as well as the form of construction.
The first section being masonry separating walls.
There are currently six cavity masonry separating walls, the variations relating to:
type of blockwork;
type of finish

15. Part L and Accredited Details The Scheme Part E Robust Details

16. Regulatory Change Drivers for Change: Cyclical Review
Robust Details
Regulatory Change
Drivers for Change:
Cyclical Review
Precedent Disasters
Government Policy
So what are Part E robust details, we are talking about Part E of the Building Regulations in England and Wales of course.
In principle, they are a bunch of separating wall and floor designs which are effectively “over-engineered” so that there is a large safety margin to take care of any reduction between the theoretical performance and the actual performance as built performance achieved. It is this safety factor which has to be big enough to give sufficient confidence to ODPM and the industry to make sound testing unnecessary.
Expand on bullets.

17. Regulatory Change Drivers for Change: Part E Cyclical Review
Robust Details
Regulatory Change
Drivers for Change:
Part E
Cyclical Review
Consultation in January 2001
Implementation in July 2004
(for PCT and RDL)
So what are Part E robust details, we are talking about Part E of the Building Regulations in England and Wales of course.
In principle, they are a bunch of separating wall and floor designs which are effectively “over-engineered” so that there is a large safety margin to take care of any reduction between the theoretical performance and the actual performance as built performance achieved. It is this safety factor which has to be big enough to give sufficient confidence to ODPM and the industry to make sound testing unnecessary.
Expand on bullets.

18. Regulatory Change Drivers for Change: Part L Government Policy
Robust Details
Regulatory Change
Drivers for Change:
Part L
Government Policy
Consultation in July 2004
Implementation in April 2006
So what are Part E robust details, we are talking about Part E of the Building Regulations in England and Wales of course.
In principle, they are a bunch of separating wall and floor designs which are effectively “over-engineered” so that there is a large safety margin to take care of any reduction between the theoretical performance and the actual performance as built performance achieved. It is this safety factor which has to be big enough to give sufficient confidence to ODPM and the industry to make sound testing unnecessary.
Expand on bullets.

19. Sustainability, Noise and Regulation The Scheme Part E Robust Details

20. Noise and Regulation New Buildings: Health and Safety
Robust Details
Noise and Regulation
New Buildings:
Health and Safety
Welfare and Convenience
….post 1985
Sustainability
….post 2006

21. Health and Safety ‘prejudicial to health’? Welfare and Convenience
Robust Details
Health and Safety
‘prejudicial to health’?
(Vella vs Lambeth BC and L&Q )
…should be interpreted in line with ‘sanitary’ origins
Welfare and Convenience
….post 1985 B Regs
…essentially the same sound insulation standards as Victorian new-build

22. Sustainability A ‘Voluntary’ Code?
Robust Details
Sustainability
A ‘Voluntary’ Code?
….how will enforcement secure standards?
….more like Planning and less like Building Control?

23. Sustainability Welfare Factors: Reducing Stress and Anxiety
Robust Details
Sustainability
Welfare Factors:
Reducing Stress and Anxiety
Quality of Sleep Fitness and Health?
Contentment disincentive to move?

24. A Robust Details Approach
Repeatability - uniformity of building practices
Time Saving - minimum disruption to the construction process
Material Efficiency - standardization in specification and ordering
Energy Saving - reduction in on-site testing
Long-term improvement - the feedback cycle

25. Robust Details and Accredited Details The Scheme Part E Robust Details

26. What is a Part E robust detail?
Part E Robust Details
Definition
What is a Part E robust detail?
Separating wall or floor design assessed and approved by RDL
Capable of consistently exceeding ADE performance standards
Practical to construct on site
Reasonably tolerant to workmanship
Can be used as an alternative to PCT to comply with Requirement E1
So what are Part E robust details, we are talking about Part E of the Building Regulations in England and Wales of course.
In principle, they are a bunch of separating wall and floor designs which are effectively “over-engineered” so that there is a large safety margin to take care of any reduction between the theoretical performance and the actual performance as built performance achieved. It is this safety factor which has to be big enough to give sufficient confidence to ODPM and the industry to make sound testing unnecessary.
Expand on bullets.

27. What is a Part L accredited detail?
Part E Robust Details
Definition
What is a Part L accredited detail?
Separating wall or floor design assessed and approved by RDL?
Capable of consistently exceeding ADL performance standards?
Practical to construct on site?
Reasonably tolerant to workmanship?
Can be used as an alternative to PCT to comply with Requirement L1?
So what are Part E robust details, we are talking about Part E of the Building Regulations in England and Wales of course.
In principle, they are a bunch of separating wall and floor designs which are effectively “over-engineered” so that there is a large safety margin to take care of any reduction between the theoretical performance and the actual performance as built performance achieved. It is this safety factor which has to be big enough to give sufficient confidence to ODPM and the industry to make sound testing unnecessary.
Expand on bullets.

28. What is a Part L accredited detail?
Part E Robust Details
Definition
What is a Part L accredited detail?
‘Envelope’ component assessed and approved by calculation
(Should be) capable of exceeding ADL performance standards
Practical to construct on site?
Reasonably tolerant to workmanship?
Can be used to reduce PCT under Requirement L1
So what are Part E robust details, we are talking about Part E of the Building Regulations in England and Wales of course.
In principle, they are a bunch of separating wall and floor designs which are effectively “over-engineered” so that there is a large safety margin to take care of any reduction between the theoretical performance and the actual performance as built performance achieved. It is this safety factor which has to be big enough to give sufficient confidence to ODPM and the industry to make sound testing unnecessary.
Expand on bullets.

29. What is a Part L accredited detail?
Part E Robust Details
Definition
What is a Part L accredited detail?
‘Envelope’ component assessed and approved by calculation
(Should be) capable of exceeding ADL performance standards
Practical to construct on site?
Reasonably tolerant to workmanship?
Can be used to reduce PCT under Requirement L1
No third party monitoring
No national database
No feedback and improvement loop
So what are Part E robust details, we are talking about Part E of the Building Regulations in England and Wales of course.
In principle, they are a bunch of separating wall and floor designs which are effectively “over-engineered” so that there is a large safety margin to take care of any reduction between the theoretical performance and the actual performance as built performance achieved. It is this safety factor which has to be big enough to give sufficient confidence to ODPM and the industry to make sound testing unnecessary.
Expand on bullets.

30. What is a Part L accredited detail?
Part E Robust Details
Definition
What is a Part L accredited detail?
‘Envelope’ component assessed and approved by calculation
(Should be) capable of exceeding ADL performance standards
Practical to construct on site?
Reasonably tolerant to workmanship?
Can be used to reduce PCT under Requirement L1
So what are Part E robust details, we are talking about Part E of the Building Regulations in England and Wales of course.
In principle, they are a bunch of separating wall and floor designs which are effectively “over-engineered” so that there is a large safety margin to take care of any reduction between the theoretical performance and the actual performance as built performance achieved. It is this safety factor which has to be big enough to give sufficient confidence to ODPM and the industry to make sound testing unnecessary.
Expand on bullets.

31. Part E vs. Part L Individual homeowner vs. whole population
Robust Details
Part E vs. Part L
Individual homeowner vs. whole population
Who will benefit from ‘good’ Part L performance?
Energy efficiency is a global issue
So what are Part E robust details, we are talking about Part E of the Building Regulations in England and Wales of course.
In principle, they are a bunch of separating wall and floor designs which are effectively “over-engineered” so that there is a large safety margin to take care of any reduction between the theoretical performance and the actual performance as built performance achieved. It is this safety factor which has to be big enough to give sufficient confidence to ODPM and the industry to make sound testing unnecessary.
Expand on bullets.

32. PCT and Sustainability
Robust Details
PCT and Sustainability
PCT Failure:
Priority 1: To get a pass!
Diagnostics may be unnecessary
Short-term, short-duration, cheap solutions
Lost opportunity to learn lessons and share information
So what are Part E robust details, we are talking about Part E of the Building Regulations in England and Wales of course.
In principle, they are a bunch of separating wall and floor designs which are effectively “over-engineered” so that there is a large safety margin to take care of any reduction between the theoretical performance and the actual performance as built performance achieved. It is this safety factor which has to be big enough to give sufficient confidence to ODPM and the industry to make sound testing unnecessary.
Expand on bullets.

33. Part E Robust Details
Part L Possibilities
Robust Details option included in Draft Approved Document…
….but excluded from final version
Implementation date now passed
Accredited Construction Details - first step towards Robust Details for Part L?...
…. Or a solution for the long term?

34. New Code Possibilities
Part E Robust Details
New Code Possibilities
Robust Details have submitted case for inclusion to DCLG…
….requires a different approach to current EcoHomes rules
‘Rewards’ for high levels of PCT need to be reduced (Sustainability Grounds)
Rush to implement Code may lead to Part L-type problems

35. Other Possibilities Wherever PCT is proposed…
Part E Robust Details
Other Possibilities
Wherever PCT is proposed…
…. Airtightness in Part L looks like a ‘good fit’
Wherever a National Database would be helpful…
….especially with proliferation of BCBs?…
examples:
sustainable drainage
(disproportionate collapse, flood zones; radon areas; waste management)

36. Other Possibilities Wherever quotas are set for compliance:
Part E Robust Details
Other Possibilities
Wherever quotas are set for compliance:
e.g. 10% testing
10% lifetime homes
20% fuelled by renewables
50% zero-carbon
Wherever basic performance standards are prescribed AND industry is given the opportunity to provide its own preferred solutions

37. Part E Robust Details
Part E Robust Details
The Scheme
Conclusions

38. Robust Details so far…. Good levels of early take up
Favourable early results
Industry friendly - learning lessons together
New RDs under development
Part L and new Code possibilities

39. thankyou www.robustdetails.com robustdetails robustdetails
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