What are the typical dimensions and sizes of shuttering plywood sheets used in construction?

Shuttering plywood, used primarily for forming concrete structures, comes in a variety of sizes and thicknesses to suit different construction needs. Here are some typical dimensions and sizes:

     1. Sheet Sizes: -

(a)  4x8 Feet (1.22x2.44 Meters): This is one of the most common sizes for shuttering plywood, used widely in various construction applications.
(b)  5x10 Feet (1.52x3.05 Meters): This larger size is also available and can reduce the number of joints and seams in formwork. 
(c)  4x10 Feet (1.22x3.05 Meters): Slightly larger than the standard 4x8 feet, this size can also cover more area with fewer sheets.

      2. Thicknesses:

(a)  12mm (1/2 Inch): Commonly used for lighter formwork or smaller projects. 
(b)  18mm (3/4 Inch): A popular thickness for general-purpose shuttering, providing a good balance between strength and weight.
(c)  21mm (7/8 Inch): Used for heavier-duty applications where additional strength is required.

    Special Sizes and Variations -

1. Custom Sizes: Depending on specific project requirements, plywood can be cut to custom sizes. This is useful for specialized formwork or non-standard applications.

2. Other Thicknesses: 15mm (5/8 Inch) and 22mm (7/8 Inch): Less common but available for specific needs or where additional strength is required.

3. Overlays and Coatings: Shuttering plywood may come with different surface treatments, such as a phenolic film overlay, which helps to reduce concrete adhesion and improve the finish of the concrete surface.

4. Strength and Load-Bearing: The plywood's dimensions and thickness should match the formwork's load-bearing requirements. 

5. Transport and Handling: Larger sheets may be more difficult to handle and transport, so choosing the right size based on the project scale and available resources is important.

In summary, the typical dimensions for shuttering plywood sheets are often 4x8 feet or 5x10 feet, with thicknesses ranging from 12mm to 21mm. Custom sizes and variations are also available to meet specific project needs.

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