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Holedeck (hˈo͡ʊldɛk) is a type of reinforced concrete structure characterised by lateral perforations, which reduce the volume of concrete and allow the passage of installations.

Design[edit]

The design is based on the principles of the lightened, triangulated bird bone structure.

For the construction of the transverse windows, special removable and reusable truncated cone-shaped moulds are used, which are extracted laterally after the concrete has been poured. This technology was patented and developed by the Spanish architect Alberto Alarcón García.

Bidirectional system

Configurations[edit]

The structure has two configurations: unidirectional or in orthogonal or triangular grid. For lattice arrangements the structural behaviour and calculation is similar to that of other waffle slabs.

One-way system

In the case of the one-way system, the layout is similar to a conventional in-situ joist and beam truss. The shear of the structure is solved by the literal application of the tie rod model and is calculated in a similar way to concrete structures without perforations.

These structures are suitable for spans of between six and twenty-two metres, making them an optimal choice for the construction of sustainable concrete structures.

Features[edit]

  • Lower consumption of concrete and steel. The compression layer has a minimum thickness of between 8 and 12 cm, strictly sized according to structural fire regulations. The joists are spaced between 1 and 3 metres apart, thus making structural use of this compression layer, lightened by the perforations. For further optimisation they can be post-tensioned.
  • Minimisation of concrete and steel consumption making it possible to reduce the embedded carbon footprint by around 50% compared to a lightened slab.
  • Possible elimination of false ceilings and raised floors. Installation and maintenance of facilities is facilitated.
  • Possible reduction in the height of the building by integrating the installations and the structure in the same thickness.
  • Good geometry for thermal activation due to the high surface area in contact with the air and a smaller volume of concrete than a slab.

Built Proyects[edit]

"Edificio Logytel I+D"[1], Alcalá de Henares. 2012. Arquitects: Alarcón+Arquitectos.

"Oficinas Badajoz 97"[2], Barcelona. 2019. Arquitects: Batlleiroig Arquitectura​. Developer: Conren Tramway.

"Ampliación de la sede de Roche Diagnostics" [3], Sant Cugat del Vallès. 2022. Arquitects: Batlleiroig Arquitectura.

"Edificio 77A"[4], Elche. 2021. Arquitects: Antonio Pérez Serrano arquitecto + Serrano y Valderrama Arquitectos.

"Campus Méndez Álvaro MADNUM"[5]. Madrid. 2023. Arquitects: Estudio Lamela.

Publications[edit]

"Programa Retos de la Colaboración", 2017. Spanish Ministry of Science, Innovation and Universities. In collaboration with CSIC: Institut of Building Sciences Eduardo Torroja[6], IECA y European Regional Development Fund.

"Technical seminar Thermal activation of sustainable concrete slabs".[7] CSIC: Institute of Building Sciences Eduardo Torroja.

"This Innovative Concrete Slab System Uses up to 55% Less Concrete"[8]. ArchDaily architecture article.

"New construction system saves "50 centimetres per floor""[9]. Dezeen Magazine architecture article.

"Holedeck Waffle Slab Construction System Saves 20" Per Floor"[10]. Treehugger architecture web article.

"Bidirectional hollow-core slab system, 2012. Nº 38, pp. 101". Tectónica (Spanish Architecture Magazine).

Recognitions[edit]

"Innovation Award" del CTBUH, 2015​.[11]

"Advanced Architecture Awards", 2021.[12]

"Premios Everis", 2014. Fundación Everis.[13]

"Premio EmprendedorXXI", 2012. Caixabank.[14]

References[edit]

  1. ^ "Logytel I+D / Alarcón + Asociados". ArchDaily en Español (in Spanish).
  2. ^ "Oficines Badajoz 97 a Barcelona". Batlleiroig Arquitectura.
  3. ^ "Ampliació de la seu de Roche Diagnostics a Sant Cugat del Vallès". Batlleiroig Arquitectura.
  4. ^ "Edificio 77A / Antonio Pérez Serrano arquitecto + Serrano y Valderrama Arquitectos". ArchDaily en Español.
  5. ^ "Campus Méndez Álvaro MADNUM". Estudio Lamela Arquitectos.
  6. ^ "Forjado reticular innovador con materiales de cambio de fase activado térmicamente «HOLEDECK Active»". CSIC. Instituto de Ciencias de la Construcción Eduardo Torroja.
  7. ^ Instituto Torroja TV. Jornada técnica Activación térmica de forjados sostenibles de hormigón – via YouTube.
  8. ^ "This Innovative Concrete Slab System Uses up to 55% Less Concrete". ArchDaily. 2015-12-23.
  9. ^ "New construction system saves "50 centimetres per floor"". Dezeen. 2012-10-09.
  10. ^ Toronto, University of. "Holedeck Waffle Slab Construction System Saves 20" Per Floor". Treehugger.
  11. ^ "CTBUH Announces 2015 Performance and Innovation Award Winners | CTBUH Awards". Council on Tall Buildings and Urban Habitat.
  12. ^ "Awards 2021". REBUILD.
  13. ^ "Everis supera el millón de euros invertidos en 'startups' con sus premios". La Vanguardia.
  14. ^ "CaixaBank Sala de Prensa -". CaixaBank Sala de Prensa.