Irregular Slabs  (Opus incertum)

For all types and for all workmanships the rock must be substantially uniform and compact and without weathered parts. Rocks with subdivision planes able to determine the breakup of the elements after the installation have to be excluded.. The upper surface of the slabs must be natural and with some irregular contours.

The slabs are distinguished in:
 

Normal Kind the mean minimum diagonal must be 20 cm long. The discart percentage due to the loading, unloading and approaching operations will be tolerated. The thickness of the slabs can vary from 2 to 5 cm. The weight per square meter will be about 85 Kg;

•  Thin Kind

  the mean diagonal must be 20 cm long. The thickness can vary from 1 to 3 cm. The weight per square meter will be about 60 Kg;

• Gigantic Kind

  for normal floorings or for wide-joint ground instalments. The mean minimum diagonal must be 40 cm long. The thickness can vary from 3 to 7 cm. The weight per square meter will be about 100 Kg;

   

• Thin Gigantic Kind

  the mean minimum diagonal must be 40 cm long. The thickness can vary from 1 to 4 cm. The weight per square meter will be about 70-80 Kg.

   

  Flooring type pedestrian pathway for gardens slabs with a  80/120-cm-long diagonal

The normal slabs can be supplied loose, all the others on pallets.