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General Information

Beginning of works: March 2012
Completion: 29 April 2019
Status: in use

Project Type


Location: , ,
Coordinates: 36° 44' 6.98" N    3° 8' 21.86" E
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Technical Information


total length 600 m
gross floor area 370 000 m²
gross cubic volume 1 768 000 m³
minaret width 26.8 m
height 265 m
number of floors (below ground) 2


structural steel 14 300 t
concrete volume 445 000 m³
reinforcing steel 71 000 t

Design Loads

max. lateral acceleration 6.5 m/s²


minaret composite steel-reinforced concrete

Case Studies and Applied Products

500 years earthquake protection for Great Mosque of Algiers

500 years earthquake protection for Great Mosque of Algiers

The Great Mosque of Algiers (Djamaâ El Djazïr) will be the third biggest in the world and has to last for at least 500 years – at least theoretically. Consequently it has to be protected against earthquake which has to be expected in thi ... [more]

Excerpt from Wikipedia

Djamaa el Djazaïr (Arabic: جامع الجزائر‎), also known as the Great Mosque of Algiers (French:Grande mosquée d'Alger), is a mosque in Algiers, Algeria. It houses the world's tallest minaret and is the third-largest mosque in the world after the Great Mosque of Mecca and Al-Masjid an-Nabawi of Medina in Saudi Arabia.


The construction of the mosque began in August 2012 after the Algerian government's contract, for 1 billion euros, was won by the China State Construction Engineering Corporation. The design was done by German architects KSP Juergen Engel Architekten and engineers Krebs und Kiefer International and was completed by April 2019. The mosque faced construction delays owing to budgetary concerns due to the falling prices of oil. Around 2,300 workers from China, Algeria and other African countries were deployed to work on the project. The construction of the mosque was seen by many to serve as a symbol of the reign of long-serving president Abdelaziz Bouteflika.


The mosque sits on a site covering 400,000 m² (4,300,000 sq ft) and overlooking the Mediterranean Sea. The prayer hall has a capacity of 37,000 worshippers, while the structure including the compound can house up to 120,000 worshippers and has parking space for 7,000 cars. The complex also houses a Koranic school, a park, a library, staff housing area, a fire station, a museum of Islamic art, and a research centre on the history of Algeria.

The mosque also has a 265 m (869 ft) tall minaret, which makes it the tallest building in Africa. It also houses an observation deck atop the minaret, which has 37 floors. The mosque is designed to withstand an earthquake of magnitude 9.0 and the structure has been specially processed to resist corrosion. The main prayer hall has 618 octagonal columns serving as support pillars and 6 km (3.7 mi) of calligraphic writing engraved with a laser system. The dome of the prayer hall has a diameter of 50 m (160 ft) and rises to a height of 70 m (230 ft).

Text imported from Wikipedia article "Djamaa el Djazaïr" and modified on 14 August 2020 according to the CC-BY-SA 3.0 license.

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