Duplex is a term used to refer to apartments that are laid out over two floors connected by an inner staircase. In some regions duplexes are also called maisonettes. In some newer designs of duplex apartments there is a mezzanine level offering a smaller living space on the upper-level that overlooks the larger lower-level space, which instead has a higher than usual ceiling level, creating a feeling of spaciousness due to the large open space.
Lusail is a district in the Al Daayen municipality. The city is truly futuristic and unique in that it is the first and largest sustainable city development in Qatar. This development also known as Lusail City, is comprised of four exclusive islands and 19 districts which are used for residential, entertainment and commercial purposes, with all sorts of amenities to fulfil the needs of the local community.
The city's transport plans are ambitious, but conscious of global environmental concerns of the age. The city will have light rail network: Lusail Tram Network (designed to reduce vehicular emissions and save energy), a water taxi transportation system (which transports passengers to and from Lusail City through the Lusail marina and the main Grand Canal), cycle and pedestrian network, park and ride system (underground parking close to rail networks to encourage use of the rail network), and a shuttle bus system to connect all residential, commercial and retail areas to the public transportation system. Much of the work has already been completed.
The district is in fact designed as a "Smart City". Homes and offices will be fully automated, with a Building Management System for each building. State of the art security services will be available and the city will all be connected to smart metering, smart grid and interactive traffic management systems.
In order to create a greater sense of neighbourhood and community for residents, the city has been planned such that all facilities (i.e., schools, mosques, daily shopping and other basic commodities) can be found within walking distance in each locality. Neighbourhood gardens have also been designed for each locality. Medium and large shopping malls are located in central locations in the city to make access easier. The brand new and iconic Lusail Stadium with a capacity of over 80,000 will be the host for the opening and final matches of the 2022 FIFA World Cup.