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Plaster expands while hardening then contracts slightly just before hardening completely. This makes plaster excellent for use in molds, and it is often used as an artistic material for casting. Plaster is also commonly spread over an armature (form), made of wire mesh, cloth, or other materials; a process for adding raised details.
Plaster for hair slabs made with manila hemp fiber broke at 195 lb (88 kg), plaster mixed with sisal hemp at 150 lb (68 kg), jute at 145 lb (66 kg), and goats' hair at 144 lb (65 kg). [ citation needed ] Another test was made in the following manner.
The college was previously known as the Boston Architectural Center. By 1965, the BAC had developed a continuing education program to serve the broader community. In the mid-1960s, it was forced out of its Somerset Street building and purchased a three-story brick building at 320 Newbury Street. The structure was a former stable and was solid ...
Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO 4 ·2H 2 O. [4] It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, drywall and blackboard or sidewalk chalk.
Boston College was founded through the efforts of the first Jesuit community in New England, which was established at St. Mary's Church in Boston in 1849. [16] Jesuit priest John McElroy maintained the vision for what became BC, recognizing the need for an educational institution for the Irish Catholic immigrant population. [17]
Boston College Main Campus Historic District encompasses the historic heart of the campus of Boston College in the Chestnut Hill area of Newton, Massachusetts. It consists of a collection of six Gothic Revival stone buildings, centered on Gasson Hall, designed by Charles Donagh Maginnis and begun in 1909.
By 1970 all Boston College undergraduate programs, including at Morrissey College, had become coeducational. Stokes Hall, a humanities building that houses several arts and sciences departments, was completed in 2013. [8] In 2015, the School of Arts & Sciences and Graduate School of Arts & Sciences were renamed Morrissey College of Arts ...
Pietro Paulo Caproni (1862–1928) was founder and co-owner of PP Caproni & Brother, Boston, Massachusetts, manufacturers of plaster reproductions of classical and contemporary statues. These 'cast' reproductions were, in an era before commercial photography, an integral educational tool in teaching people the history of art and antiquities.