Cavity Walls (short not)

The walls having their thickness constructed in two separate parts with a uniform gap in between are known as cavity or hollow walls. Cavity wall consists of two walls with a 50 to 80 mm gap or cavity between them. the outer wall is known as outer leaf. It is 100 mm thick. The inner wall is thick and strong. It carries the super imposed loads of beams, trusses roofs etc. The minimum allowed thickness for inner walls is T00 mm. These walls are always laid in C. mortar (I: 4) to (I :5). These two walls are held together by impervions material ties.