CPD test paper

Part L 2010 The CIOB requires members to assess and fulfil their own CPD needs. Members can therefore choose to study the CPD articles published in CM as a valid part of their personal record of CPD activity. To complete the questionnaire printed below, members should log

on to www.construction-manager.co.uk then click on this month’s CPD article. Scroll down to the end of the article, and you will find a link to the online questionnaire (see example pictured below) and the five multiple choice questions printed here. Select your answers, fill in your contact details then click “submit”. If all five questions are answered correctly, you will be invited

to download and print a PDF document confirming your successful completion of the questionnaire. If one or more questions is answered incorrectly, please reread the article and try again, pressing “submit” to resend the amended form. The questionnaire for the October edition will be available on

the website until 1 December. We are no longer offering the facility to send questionnaires by fax or post. Please email any questions regarding this CPD service to cmcpd@atompublishing.co.uk

Continuing Professional Development Part L 2010

1. Renovation is now defined as: 50% of the element or 50% of the total envelope in context 70% of the element or 25% of the total envelope in context 50% of the element or 25% of the total envelope in context 25% of the element or 50% of the total envelope in context

2. Under 20D, prior to work starting, designers will need to submit: Target CO2

Calculated CO2

emissions rate for the building emissions rate for the building

as designed A list of specifications to which the building will be constructed All of the above

3. If a dwelling is not pressure tested, there must be a “confidence factor” applied of: 6m3 2m3

/h/m2 /h/m2

@ 50 Pa @ 60 Pa

2m3 4m3

/h/m2 /h/m2

@ 50 Pa @ 50 Pa

4. Approved Document L2A states that thermal bridging be calculated in accordance with: BREEAM BR 467 ISO 13370 BR 497

5. The limiting U-value for heat loss through party walls is: 0.2W/m2 4W/m2

K K 2W/m2 38 | OCTOBER 2010 | CONSTRUCTION MANAGER K 0.1W/m2 K

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necessary to provide as-built calculations with the fit-out areas conditioned to the previously assumed temperatures. A predicted energy performance certificate (EPC) rating is also required to show what level of performance is possible. However, there is no requirement for an EPC to be formally lodged at that stage. A revised procedure is now in place to

limit the effects of solar gain, whether or not a building has air conditioning at the time of design. Even where a design for a naturally ventilated building achieves Part L approval, this does not automatically mean that internal environmental temperatures will be satisfactory as they can be affected by the user. The 2006 requirement for a building log

book was not regularly enforced, but under 2010 Building Control departments will be expected to demand to see that these are provided before they can issue a completion certificate.

Approved Documents L1B and L2B: refurbishment Changes here are relatively simple and mostly concern alterations to minimum

U-values to achieve the 25% improvement. The relaxation for listed buildings under Regulation 9 has been further clarified and now states that the exemption only occurs “where compliance would unacceptably alter the character or appearance of the building and it is: a listed building; in a conservation area; a scheduled monument”. Even when exemption applies the aim

should be to improve energy efficiency as far as practical. Finally, there is also a change in the definition of renovation, which is now defined as 50% of the element or 25% of the total envelope in context. For example, when removing plaster from a room, then the element is the area of external wall to the room; when removing external render, it’s the area of that elevation. As a result, it will be necessary to consider upgrading the insulation or heating/cooling systems on almost any building project.

Geoff Wilkinson is managing director of Wilkinson Construction Consultants geoff@thebuildinginspector.org