This Architectural Drawing is AutoCAD 2d drawing of L- shaped Sofa cad block in AutoCAD, dwg file. L-shaped sofas are a great choice for those who want a large, generous seating area. Offering plenty of room for everyone to sprawl out, L-shaped sofas are a good option for living rooms of all shapes and sizes. One of the most important things to consider when buying an L-shaped sofa is the size of your living room.