Nianing's church, Senegal

by Nicolas Vernoux-Thélot
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2019-06-07 17:00:50
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France
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7698 / FR

New Construction

Building Type : Other building
Construction Year : 2016
Delivery year : 2019
Address 1 - street : Nianing, Sénégal Sénégal NIANING, Autres pays
Climate zone : [As] Tropical dry

Net Floor Area : 457 m²
Construction/refurbishment cost : 1 059 799 €
Number of none : 3 none
Cost/m2 : 2319.04 €/m²

Primary energy need :
3 kWhep/m².an
(Calculation method : )

Energy consumption

Economical buildingBuilding

< 50A

51 à 90B

91 à 150C

151 à 230D

231 à 330E

331 à 450F

> 450G

Energy-intensive building

Located on the shells' coast, south of Dakar, the project is imbued with this regional particularity taking as a starting point the spiral shape of a cymbium.

Oriented towards the east and sloping towards the sky, the building closes to the north and the south to protect itself from the sun and the harmattan.

The building opens to the west to capture the freshness of the trade winds by a set of volumes broken down into seven vaults with a bell tower that rises to 45 meters and plays the role of both signal and ventilation chimney.

In order to put in place a natural passive ventilation, the project is inspired by the functioning of the African termite mound which is an extremely efficient model of thermal regulation. It is also inspired by the operation of wind towers in East Africa, which have also been known for centuries for their effectiveness.

Sustainable development approach of the project owner

Promote the hiring of a local workforce for the construction of the building.

The Eiffage company honored this request and hired more than 50% of the construction team in the Mbour region

Architectural description

The woods all come from Cameroon forest labeled "respect for the environment and sustainable development". All non-reusable formwork timber for other sites was recovered to build the church choir chairs.

Building users opinion

Without knowing the work on the passive natural ventilation, the abbot told us when the final reception of the works in April 2019: What a freshness in this church!

Photo credit

King L'enemy

Contractor

Name : Archidiocèse de Dakar

Contact : Benjamin Ndiaye, archevêque de Dakar

Construction Manager

Name : IN SITU ARCHITECTURE

Contact : [email protected]

http://www.insitu-architecture.net

Stakeholders

Function : Construction company

Eiffage Sénégal

Dominique Job / Sandra Villepontoux / Gérard Sénac

http://senegal.eiffage.sn/

General Enterprise

Function :

ETECS

Lucien Santolini

https://www.etecsafrique.com/

Office of study structure

Function : Construction Manager

GA2D

Eric Mulot

executing project management relays

Energy consumption

Primary energy need : 3,00 kWhep/m².an

Breakdown for energy consumption : Nave: emergency block * 5 / Baffles * 10 / Projectors * 28 Sacristy and sanitary block and technical: 5 ceiling lights / 1 amp

Real final energy consumption

Final Energy : 1,00 kWhef/m².an

Real final energy consumption/m2 : 1,20 kWhef/m².an

Year of the real energy consumption : 2 019

More information

LED bulb (total consumption: 496 kWh / year)

Systems

Heating system :

No heating system

Hot water system :

No domestic hot water system

Cooling system :

No cooling system

Ventilation system :

Natural ventilation

Renewable systems :

No renewable energy systems

Solutions enhancing nature free gains :

rafraîchissement par tirage thermique qui permets d'économiser 112 % de la consommation énergétique de l'édifice

Urban environment

Land plot area : 5 691,00 m²
Built-up area : 725,00 %
Green space : 4 311,00

Product

Concrete

cimenterie locale (à Kirene, environ 50km)

Cimenterie du Sahel

Product category : Structural work / Structure - Masonry - Facade

Reinforced concrete vault, optimization of the material (15cm thick)