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The murus Dacicus technique began with selecting appropriate stone. The Dacian fortresses used local limestone or andesite, quarried from nearby sources to minimize transportation difficulties. The masons understood which rock formations would yield blocks suitable for construction—stone that was sufficiently homogeneous to be worked predictably but not so soft that it would weather rapidly.
The quarrying process required reading the stone’s natural structure. Limestone bedding planes suggested where blocks could be separated most easily. The masons looked for natural fractures that indicated weakness, seeking sections where stone was sound throughout its volume. A block with hidden flaws might crack during transport or installation, wasting the labor invested in its extraction and preparation.
The extracted blocks were roughly shaped at the quarry, removing excess material before transport to reduce weight. The preliminary shaping followed the stone’s natural grain, working with its structure rather than forcing unnatural forms. The blocks remained oversized at this stage—final fitting would occur during installation when exact dimensions could be determined.
Transport from quarry to construction site was major undertaking. Blocks weighing several tons had to be moved uphill to mountain peaks where fortresses were positioned. The Dacians used wooden rollers, ropes, and probably animals for hauling, but the primary motive force was human muscle. The labor investment in moving a single block was substantial—dozens of workers laboring for days to position one stone.
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