Embodied Carbon Webinar 2014 quiz

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Please answer the following 10 multiple choice questions, then click 'submit' to check the result. The pass mark for a CPD certificate is 8 out of 10, and you may retake the quiz as many times as you wish, but the questions will vary! Please note that one, two, three or all of the possible answers presented for each question may be right, and to gain a mark for that question all correct answers must be identified.

Good luck

Embodied carbon

The changes to Approved Document L (as applied to England) originally planned for 2013 but published in 2014, were originally intended to lead to a reduction in regulated operational carbon emissions of 25% compared to the previous version, published in 2010. However, these were diluted. The new targets were described. What are they?

6% improvement for domestic buildings and 9% for non-domestic buildings.
9% improvement for domestic buildings and 12% for non-domestic buildings.
15% improvement for domestic buildings and 20% for non-domestic buildings.
20% improvement for domestic buildings and 30% for non-domestic buildings.

The phrase Carbon Dioxide equivalents was explained in terms of characterisation factors for various gases. After CO2, the next most potent greenhouse gas was methane. What is its characterisation factor?


How was the term downcycling defined?

The recycling process when the resultant material is of a lower quality than the original source.
The process whereby construction material is sent to landfill at end of life.
The process whereby construction material is recycled back to identical products at end of life.
The process whereby new uses are found for otherwise useless materials that have come to the end of their life.

The C modules in BS EN 15804 cover the demolition separation and removal process at end of life for building components. It also includes CO2e emissions from secondary preparation (e.g. woodchip production in preparation for incineration). Which of the following statements is correct?

The emissions from demolition and separation always make a significant contribution to the total.
The emissions from demolition and separation are generally small.
The emissions from demolition and separation can be small or large and are a function of the materials used in the buildings.
None of the above.

Most of the CO2e emissions from the manufacture of concrete arise from the production of cement. It is possible to use cement replacements in concrete to reduce those emissions. Which two of these are widely used cement replacements?

Ground clinker
Ground granulated blast furnace slag
Ground soda-lime glass
Pulverised fly ash

Data was presented from the recently published Wood for Good database. Which of the following conclusions can be drawn from that data?

That the CO2e emissions from secondary reprocessing of wood from demolition for recycling and incineration are large in terms of overall emissions.
That significant amounts of CO2 are sequested in timber products.
That the cradle to cradle CO2e emissions from timber are strongly influenced by the end of life outcome assumed.
All of the above

Which set of BS EN 15804 modules should be the minimum included in a cradle to cradle approach to embodied carbon calculation (carbon footprinting)?

A1-A3 and D
A1-A3, B and D
A1-A3, C and D
A1-A5, B, C and D

Module D is described in BS EN 15804 as Benefits and loads beyond the system boundary. Which of the following applies to Module D?

Module D encourages recycling and reuse.
The use of Module D is compulsory.
Module D allows us to take into account the positive or negative impacts of construction material after the building is demolished.
All of the above

The way in which the Government in England intends to impose an infrastructure of low carbon buildings is via changes to the relevant Approved Document. Is this?

Approved Document B
Approved Document L
Approved Document E
Approved Document P

The Government objective is that all new buildings will be zero carbon in operation (bearing in mind that zero carbon has not yet been defined for non-domestic buildings) by which year?