A stone mason builds and repairs stone structures such as piers, walls and abutments. They also lay walks, curbstones, or special types of masonry for vats, tanks and floors.
The stone mason works predominantly with two types of stone:
The stone mason cuts, shapes and cleans these stones to erect structures, lay pavements and paths. The stone mason uses kerbstones and special types of masonry for vats, tanks and floors. He may work from drawings in which each stone has been marked for placement.
Different tasks include the laying our of wall patterns or foundations, using straight edges, rules or staked lines, shaping, trimming, facing and cutting marble or stone preparatory to setting, using power saws, cutting equipment and hand tools, setting the vertical and horizontal alignment of structures using plumb bobs, gauge lines and levels, and mixing mortar or grout and pouring or spreading it onto the marble slabs, stone or foundation. They remove the wedges, fill the joints between the stones, finish the joints between the stones using a trowel and smooth the mortar to an attractive finish, using a pointer. They clean excess mortar or grout from the surface of the marble, stone or monument, using sponges, brushes, water or acid and smooth, polish and bevel surfaces, using hand and power tools. They drill holes in marble or ornamental stone and anchor brackets in the holes. The stone or marble is set in place, according to the layout or pattern.
For the making of moulds, the interior of the moulds is lined with treated paper and the moulds filled with composition-stone mixture, then the mould is positioned along the guidelines of the wall, pressed into place, and the moulds and paper removed.
Repair work includes replacing broken or missing masonry units in walls or floors, repairing cracked or chipped areas of stone or marble, using blowtorch and mastic, and removing rough or defective spots from concrete, using a power grinder or chisel and hammer.
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