Mitsulift Headquarters is an office building
which construction was finalized in October 2012.
It is located on lot 105 Dbayeh, northern
Beirut suburbs, Lebanon.
Architectural program
The space is functional and serves different
purposes: the aim is to create a polyvalent layout to accommodate different
market needs. The top floors are dedicated to the headquarters of Mitsulift (an
elevator company), the ground floor for retail and a few office floors in
between offer an open plan space that can be layout into different
configurations. The building needed to be cost efficient. For this, RAA endeavored
to find smart ideas for using cost efficient and maintenance-free materials, such
as GRC (Glass Reinforced Concrete) panels for the façade.
Façade
A building that works efficiently and in a
sustainable manner is one that has a carefully thought-out space from the
inside, not that just looks good from the outside: the façade is an external
translation of the internal efficiency not just an aesthetic frame.
RAA main concern is the living quality of the
users and the efficiency of the construction by minimizing direct sunlight and
heat intake. To optimize this effect the ceiling height was raised, and high, deep
recessed slit windows were created so that the openings are in the shade on the
east and west. This proportion of high windows gives more natural, homogenized light
into the deep end of the office.
Passive green
The windows are not operable in order to enhance
the insulation properties of the façade in terms of thermal, sound and dust
pollution. The air exchange is through filtered heat recovery machines, hence
minimizes thermal consumption. The building being located on a highway, the
idea was easy to implement; the result is a better quality of spaces in urban
environments.
Ecological solutions are not always technologically
driven. Sun is extremely efficient in Lebanon: it is an available energy. The
architect must cater to the local climate and adapt to local lifestyle and
culture. Other passive approach is the usage of thermal mass to absorb heat
during the day and release it at night. Efficient technological systems such as
solar heating for hot water, VRV air-conditioning machines, LED and fluorescent
lighting, energy recovery, and variable speed elevators are also used in Mitsulift Headquarters building.