Here is the detailed autocad dwg of acoustic isolation roofs ,it is used to reduce noise inside a room.
Column and beam foundation
Construction Layout Plan A
Foundation plan and sectio
Bolt nut section table aut
Staircase construction det
Side wall constructive sec
Stair plan and elevation,
Wall Section With Flooring
Head assembly pre fabricat
Chlorination and false bac
Foundation plan and constr
Column plan and section de