Contractor

Name : Association Sportive et Culturelle de Mézières

Contact : ascmezieres[at]wanadoo.fr -

 https://www.ascmezieres.fr/

Construction Manager

Name : Laure-Hélène DOERLER

Contact : lhdo[at]lhdo-architecture.com

 http://lhdo-architecture.com/

Stakeholders

Function :

BABI BET Structure

 http://www.agencebabi.com/

Function : Thermal consultancy agency

MAYA Construction Durable

Max MAUREL

 http://maya-concept.com/

Energy consumption

• Primary energy need : 82,90 kWhep/m².an
• Primary energy need for standard building : 154,60 kWhep/m².an

Calculation method : RT 2012

CEEB : 0.0002

Breakdown for energy consumption : Heating: 53.5 kWe.p / m² / year Hot water: 2.0 kWe.p / m² / year Ventilation: 7.0 kWe.p / m² / year Auxiliary: 1.5 kWe.p / m² / year Lighting: 19.0 kWe.p / m² / year

Real final energy consumption

Final Energy : 65,60 kWhef/m².an

Envelope performance

• Envelope U-Value : 0,31 W.m^-2.K^-1

More information

VERTICAL WALLS facing outside: The building is constructed of timber framed walls with wood fiber insulation sandwiched between the 145 mm + 6 cm thick wood fiber insulation on the inside covered with a vapor barrier. Interior finish: plasterboard OSB bracing panel on the outside (as requested by the Technical Controller, see below), anti-UV rain film. Exterior Cladding: Solid Wood Blades Exterior Finish: Double Cladding Cladding FLOOR LOW: The low floor is built in floor beams concrete beams (land in flood zone) ROOF: The frame is made of glulam: crossbow and failures. The roof is treated like a cold roof with the installation of counter-battens under the doors to create an air space, which are themselves placed on wood fiber underlayment panels (acoustic and thermal insulation). ) fixed on the rafters. The insulating panels on the underside of the roof, between and under the framing timber faults are made of rock wool because of the nature of the false ceiling put in place (suspended ceiling suspended in mineral slabs 60x60) for questions of economy, because wood fiber does not have sufficient fire resistance The cover complex is the following (from the outside to the inside): - pre-patinated zinc cover (request from the Architect of Buildings of France) - counter-battens on wood fiber panels (covered with under-roofing film) fixed on wooden rafters (fixed on the framing faults) carpentry: Double glazed wood and triple glazing for roof frames.

Systems

Heating system :
• Urban network
• Low temperature floor heating
• Wood boiler
Hot water system :
• Individual gas boiler
Cooling system :
• No cooling system
Ventilation system :
• Single flow
Renewable systems :
• No renewable energy systems

Urban environment

The new building is part of an existing complex, consisting of a "bourgeois" one-storey house with attic, housing the current leisure center and an outbuilding hosting a youth information point. The choice of wood facade allows to establish a dialogue between the contemporary intervention and its immediate context but also more widely on the scale of the town, whose church is classified (perimeter of Historic Monuments protection).

Product

Product category : Structural work / Structure - Masonry - Facade

The sunscreens on the west facade of the building are slatted shutters (vertical wood slats of the external cladding).

Contrary to what was foreseen during the studies and validated by the technical controller during his initial report, the company in charge of the frame lot was forced to put the bracing panel on the external face of the timber frame wall, whereas it was originally planned on the internal side.
In keeping with the DTU (Unified technical document), the Technical Controller never agreed to accept the calculation note for water vapor transmission wood frame walls transmitted by the thermistor (in accordance with RAGE 2012 and EN 13788).

Product category :

Construction and exploitation costs

• Total cost of the building : 309 954 €

Comfort

Health & comfort :

The choice of "all wood" , versatile material natural and warm, meets a multiple objective:

• The use of wood contributes to the feeling of comfort and hospitality and contributes to a satisfactory indoor air quality. The wood fiber insulation offers a significant phase shift for summer comfort.
• The wood shutters in the north-west facade are lightened-vertical way to sift the light of the West.                                                                                                     

Whether in terms of air quality and comfort related to the effusivity of materials, attention has been paid to users. For example, the floor coverings are made of natural linoleum (surface finish without metallization) and the tiling or earthenware was chosen for the walls of the damp rooms. For the other walls, the choice fell on paints without volatile organic compounds. Comfort is also expressed in the quality of use, in particular by a playful design of the details designed for children:

• The building, elevated due to the unspoiled nature of the land, is accessible by a low-slope ramp whose opening is supported on the outside by wooden posts arranged according to a variable pattern. This arrangement makes it possible to have a protection of the elements without having a closed frontage and to give more depth of field windows of the existing building located in front. It is also a filter for southern light which also offers games of sight on the existing building and plays of light with the late morning sun that move as the sun rises.
• The installation of wooden steps on the garden facade, in the extension of the activity room and across the width of the glazed windows, offers children an indoor / outdoor transition space that they can appropriate to play and who can make Bleacher for small outdoor shows.
• The faience tile cover placed above the children's washbasin features 4 slant mirrors in a tile, located at the child's eye level to allow them to look at each other and make faces.

GHG emissions

• GHG in use : 16,00 KgCO₂/m²/an
Methodology used :

Regulatory thermal study