Asbestos Cement Sheets

Asbestos cement sheets are commonly used as roofing and cladding material in industrial and agricultural buildings. These sheets are made by mixing asbestos fibers and cement together, which gives them strength, durability, and resistance to fire, weather, and insects.

Maximum Permissible Span

The maximum permissible span of asbestos cement sheets is the distance between two supports that the sheet can span without sagging or breaking. This span depends on various factors like the thickness and quality of the sheet, the load it will bear, the wind and snow load in the area, and the temperature and humidity conditions.

The maximum permissible span of asbestos cement sheets is calculated based on the deflection limit of L/180, where L is the span of the sheet. This means that the sheet should not deflect more than 1/180th of its length, which ensures that it remains stable and does not crack or break.

Answer

The maximum permissible span of asbestos cement sheets is 1680 mm or 1.68 meters. This means that any distance between two supports greater than 1.68 meters will cause the sheet to sag or break, which can be dangerous and expensive to repair. Therefore, it is important to choose the right thickness and quality of the sheet and install it properly with adequate supports and fasteners to ensure its safety and longevity.