The family created the office of marble in 1564 to regulate the marble mining industry.
Marble quality designation.
The thickness of tile its calibration offers one indication of its quality.
Bqd 100 σ s 1m l where s is the.
Ask for the marble s complete name.
Carrara marble has been used since the time of ancient rome and it was called the luni marble.
Obviously the thicker the marble tile the better as marble tiles naturally contain flaws.
Thassos aaa for example is a higher quality of stone than standard thassos.
6 rock mass blok quality designation.
In the 17th and 18th centuries the marble quarries were monitored by the cybo and malaspina families who ruled over massa and carrara.
Also ask for the marble s hardness factor.
Rock mass block quality designation bqd has been proposed as the ratio of the total length of the scan trace line length to the cumulative length of the discontinuity spacing and or borehole core length equal to and or greater than 1 m as percentage.
The city of massa in particular saw much of its plan.
If a stone has a high hardness factor yet seems to have fiberglass resin fill or fissures this is a poor quality tile of that stone.