Stonemasons cut and shape hard and soft stone blocks and masonry slabs to construct and renovate stone structures and monumental masonry. Apprentices will learn to: Study plans and specifications to determine materials required, dimensions and installation procedures. Erect scaffolding. Seal foundations with damp resistant materials and spreads layers of mortar to serve as base and binder for blocks, using trowels. Check vertical and horizontal alignment. Cut, shape, and polish stones and bricks using machines and hand tools, and shapes bricks to fit irregular spaces. Repair and maintain bricks, cement blocks and related structures. Design and cut monumental masonry including lettering. Construct walls using stone slabs and large masonry slab blocks.