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Suspended plaster ceilings have been in use already for several decades. 1_______. Suspended ceiling is a finish ceiling. 2_______. Among them the most widely used are gypsum, board, plaster, and various boards made of fibers. 3_______. Ceilings produced of fibrous materials are classified as acoustical ceilings. 4_______.
How are suspended ceilings characterized
Suspended ceilings can be produced of almost any materials
Suspended plaster ceilings are rather popular in modern constructions of different kinds
Their most useful property is high absorption of sound energy