Plywood

Wood

Basic

- Natural, organic, lightweight, strong, readily accessible, simple to work with in construction

- Flaws in a piece of wood such as knots, splits, or wraps affect its strength, grading and appearance.

Plywood

Process

-Made up of multiple wood veneers glued together, alternating grain direction ninety degrees for each adjacent veneer.

-Made from wood veneer sheets rotary slices from logs and then kiln- dried to an approximate moisture content of 5%.

-Pressed together under elevated temperature and high pressure to create a solid board.

Technical information

-Differentiate into grades for different usage

Eg. N-being a smooth, natural finish

A-     A smooth, paint grade finish

B-      Smooth finish with knots and plugs

C-      Sheathing grades, unsanded

D-     A grade limited to interior panel use

-High uniform strength in relation to its weight.

-Affords a way to create curved shapes to be framed.

-Exterior grade plywood (WBP)

Limitations

Standard plywood sheet – 4 by 8 feet (121.9*243.8)

Thickness for standard sheet- 0.25 to 1.124 inches (6.35 to 28.57mm)

Normal Usage

-Use on floors, walls and roofs in house constructions.

-Furniture such as chair and table

-Wall paneling

-Sheds and cladding are made from this material.

- Exterior grade plywood (WBP - Weather and Boil Proof). This type of plywood can be used outside. Water-resistant adhesives are used and can resist a certain amount of moisture.

Environmental impact

-It is environmentally friendly material but if it is stick together, the glue and chemical used might not be biodegradable.

-Plywood can be recycle if it is not undergo with chemical.

Advantages

-The more veneers used, the stronger the plywood becomes.

-Easy to be transport once product is done. (Lightweight compare to other material such as concrete)

Disadvantages

-It’s weight and unwieldiness, and unless a  high grade is selected plywood can have voids and inconsistencies in its structure.

Company in Australia

-http://www.australply.com.au/

-http://www.gunnersens.com.au/

Reference
-Materials for architectural design, By Victoria Ballard Bell with Patrick Rand
-http://www.woodsolutions.com.au/Wood-Product-Categories/Plywood

-http://www.gunnersens.com.au/products/building-products/plywood.html