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should  be  to  create  as  much  stand-off
                                                                 distance  between  the  air  shock  wave
                                                                 and  the  building  as  possible.  On
                                                                 congested  city  centers  there  may  be
                                                                 little or no scope for repositioning the
                                                                 building, but what small stand-off there
                                                                 is  should  be  secured  where  possible.
                                                                 This  can  be  achieved  by  strategic
                                                                 location  of  obstructions  such  as
                                                                 bollards, trees and street furniture.


                  Equipment                                      Establishment  of  protective  cowl  for
                                                                 machine tools

                  Energy networks                                Gas,     water,     steam     installations,
                                                                 electrical  connections,  elevators  and
                                                                 water  storage  systems  should  be
                                                                 planned to resist any explosion affects.
                                                                 The main control units and installation
                                                                 feeding  points  should  be  protected
                                                                 from     direct    attacks.    A    reserve
                                                                 installation system should be provided
                                                                 for a potential explosion and should be
                                                                 located    remote      from     the    main
                                                                 installation system.


                  General measures                               With correct selection of the structural
                                                                 system,  well  designed  beam-column
                                                                 connections,       structural     elements

                                                                 designed  adequately,  moment  frames
                                                                 that  transfer  sufficient  load  and  high
                                                                 quality material it’s possible to build a
                                                                 blast  resistant  building.  Every  single
                                                                 member should be designed to bear the
                                                                 possible blast loading. For the existing
                                                                 structures, retrofitting  of the  structural
                                                                 elements might be essential.



                         Table 7.3 – Overpressure ΔР              (kPa), causing by destruction of some
                                                            f max
                  objects elements:
                                                                                   Degree of destruction
                                       Elements of object                          depending on ΔР      f max. ,
                                                                                              kPa



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