Understanding RT2012, it’s child’s play!
The thermal regulations of 2012 have the objective, like previous thermal regulations, of limiting energy consumption of new buildings whether they are for housing (residential) or any other use (tertiary). The aim of this Thermal Regulation is defined by the law on the implementation of the Grenelle Environmental Forum. This objective restates the energy performance level defined by the BBC-Effinergie label. The thermal regulations in force, consequently, will be reinforced so that all new buildings have, on average, a consumption of primary energy (before transformation and transport) lower than 50 kWh/m² /yr against 150 kWh/m²/yr approximately under the RT2005. The 2012 Thermal regulations rests on three coefficients: the Bioclimatic Requirement (BBio), Consumption (C) and the recommended internal temperature (Tic). In a simplified way, the BBio coefficient corresponds to the losses (natural losses and need for users) minus free supply (body ,heat from the sun, etc.), the coefficient C corresponds to the need on the output of equipment and the Tic to the maximum temperature reached during a period of high heat. The coefficients BBio, C and Tic will be calculated using the computerized computational tools which will be provided by the CSTB and which are under development.
The Thermal Regulations of 2012 apply: For housing programmes (houses, apartment building, centres for young workers and university residences) located in the ANRU area whose building permits will have been filed from October 28th, 2011. For office programmes, teaching premises and child day-care establishments whose building permits will have been filed from October 28th, 2011. For other tertiary buildings whose building permits will have been filed on January 1st, 2013. For buildings for use as housing located outside the perimeter areas for urban renovation whose building permits will have been filed on January 1st, 2013.
It’s always simpler with a drawing!
We suggest a cartoon made by pupils of the ESTP which drew our attention. We hope that this will help you to familiarize yourself with the RT2012. Click on the following link: LINK