What criteria should be followed when designing the operation?
Having compiled all the information required (see section 5.2) and having performed the risk assessment, the demolition works can start to be designed, which will culminate in the drafting of the demolition project.
That project and the technical documentation in it will be the main tool to monitor and keep under control the parameters required for the safe operation of the high reach machines. The minimum contents are:
- Identification and specification of the building/structure to be demolished
- Ramps and embankments sizing
- Time sequence of events
- Identification of the characteristics of the high reach machine to be used
- Indication of the debris and dust control systems to be assembled
- Necessary graphic support
During the preparation of the project documentation, some fundamental technical issues, derived from the experience of employing high reach machines on site, should be taken into account and which application can significantly increase the security level of demolition activity. That technical issues are:
- Relation between the height of the building and the distance of the machine
- Positioning of the machine in relation to the structure to be demolished
- Positioning of the arm with respect to the building to be demolished
- Working platforms
- Logical progress of the demolition phase on multi-storey buildings
- Systems of containing dust and debris
- Containment of the rubble
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