BLAST PRO­TEC­TIVE FA­CADE

Domus - - RASSEGNA - PERMASTEELISA GROUP www.per­mas­teel­is­agroup.com

The theme of trans­parency is very much at the fore­front in the field con­tem­po­rary ar­chi­tec­ture and cur­rent de­sign trends fo­cus on max­imis­ing the ex­tent of glazed ar­eas. Build­ing en­velopes de­signed in this way how­ever must in­creas­ingly of­ten en­sure high lev­els of re­sis­tance and se­cu­rity in the event of nat­u­ral dis­as­ters or ter­ror­ist at­tacks. To re­spond to both these de­mands, the Permasteelisa Group have fo­cussed on the de­vel­op­ment of a con­struc­tion tech­nol­ogy known as Tes­tudo®, that is able to pro­vide cost-ef­fec­tive se­cu­rity with­out com­pro­mis­ing ar­chi­tec­tural free­dom. The strat­egy for im­prov­ing the con­struc­tion of the façade in­volves the use of dis­si­pa­tive con­nec­tors to al­low large de­flec­tions with­out dis­en­gag­ing the panel. The Permasteelisa Group used nu­mer­i­cal tools de­vel­oped in­house in or­der to sup­port the de­sign dur­ing the dif­fer­ent phases of the project. All the ma­jor out­comes of their re­search have been there­fore in­te­grated into the pro­pri­etary soft­ware Tes­tudo® for the uni­tised pan­els. In the photo: the of­fice block at 99 Bish­ops­gate re­fur­bished by GMW Ar­chi­tects has be­come a new con­tem­po­rary land­mark for Lon­don. The glazed cover­ing of the build­ing has been spe­cially de­signed to re­sist shock­waves from any nearby ex­plo­sions and can with­stand a bomb blast of 8,000 Pa.

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