When the work is being carried out, the principles set out in Article 6 of Directive 89/391/EEC shall be applied, in particular as regards:
keeping the construction site in good order and in a satisfactory state of cleanliness;
choosing the location of workstations bearing in mind how access to these workplaces is obtained, and determining routes or areas for the passage and movement and equiment;
the conditions under which various materials are handled;
technical maintenance, pre-commissioning checks and regular checks on installations and equipment with a view to correcting any faults which might affect the safety and health of workers;
the demarcation and laying-out of areas for the storage of various materials, in particular where dangerous materials or substances are concerned;
the conditions under which the dangerous materials used are removed;
the storage and disposal or removal of waste and debris;
the adaptation, based on progress made with the site, of the actual period to be allocated for the various types of work or work stages;
cooperation between employers and self-employed persons;
interaction with industrial activities at the place within which or in the vicinity of which the construction site is located.