From Wikipedia, the free encyclopedia
Jump to: navigation, search
The mezzanine of the Maastricht Centre Céramique
View of the mezzanine in the lobby of the former Capitol Cinema, Ottawa, Ontario, Canada
A structural steel mezzanine used for industrial storage
Bilbao Metro station's mezzanine

A mezzanine (or in French, an entresol)[1] is an intermediate floor in a building which is partly open to the double-height ceilinged floor below. Mezzanines may serve a wide variety of functions. Industrial mezzanines, such as those used in warehouses, may be temporary or semi-permanent structures.


A mezzanine is an intermediate floor (or floors) in a building which is open to the floor below.[2] It is placed halfway up the wall on a floor which has a ceiling at least twice as high as a floor with minimum height.[3] A mezzanine does not count as one of the floors in a building, and generally does not count in determining maximum floorspace.[2] The International Building Code permits a mezzanine to have as much as one-third of the floor space of the floor below. Local building codes may vary somewhat from this standard.[2] A space may have more than one mezzanine, as long as the sum total of floor space of all the mezzanines is not greater than one-third the floor space of the complete floor below.[2]

Mezzanines help to make a high-ceilinged space feel more personal and less vast, and can create additional floor space.[4] Mezzanines, however, may have lower-than-normal ceilings[1] due to their location. The term "mezzanine" does not imply a function, as mezzanines can be used for a wide array of purposes.[5][6]

Mezzanines are commonly used in Modern architecture, which places a heavy emphasis on light and space.[3]

Industrial mezzanines[edit]

In industrial settings, mezzanines may be installed (rather than built as part of the structure) in high-ceilinged spaces such as warehouses. These semi-permanent structures are usually free-standing, can be dismantled and relocated, and are sold commercially. Industrial mezzanine structures can be supported by structural steel columns and elements, or by racks or shelves.[7] Depending on the span and the run of the mezzanine, different materials may be used for the mezzanine's deck.[8] Some industrial mezzanines may also include enclosed, paneled office space on their upper levels.[7]

Industrial mezzanines are typically not constructed of wood, although advancements in the engineering of composite lumber in the late 1990s and early 21st century greatly increased the viability of wood-based products as a mezzanine flooring solution. While mezzanines made out of wood are traditionally considered only as a solution for storage[9] and not for material handling purposes, composite lumber panels are a commonly used for elevated platforms or in LEED certified warehouses due to the presence of recycled contents in the compost and a decreased dependency on the amount of structural steel required to raise the platform.

An architect is sometimes hired to help determine whether the floor of the building can support a mezzanine (and how heavy the mezzanine may be), and to design the appropriate mezzanine.[8]


  1. ^ a b Harris 1983, p. 353.
  2. ^ a b c d Allen & Iano 2012, p. 303.
  3. ^ a b Coates, Brooker & Stone 2008, p. 163.
  4. ^ Robinson, Paula; Robinson, Phil (May 31, 2006). "The Room Planners: How to Add a Mezzanine". The Telegraph. Retrieved May 15, 2016. 
  5. ^ Habraken & Teicher 1998, p. 133.
  6. ^ Guo 2010, p. 78.
  7. ^ a b Drury & Falconer 2003, p. 122.
  8. ^ a b Materials Handling and Management Society 1993, p. 11—136.
  9. ^ Aghayere & Vigil 2007, p. 1.


External links[edit]