Questions and Answers
Timber is often used as ______, beams, lintels, doors and windows.
posts
Timber can be used in ______, roofing, ceilings.
floorings
Timber is used for making ______, sports goods, railway sleepers.
furniture
The ______ of timber should be uniform.
Signup and view all the answers
A clear ringing sound when struck indicates the timber is ______.
Signup and view all the answers
The ______ of good timber is fine and even.
Signup and view all the answers
Timber with higher ______ have thicker walls and are stronger.
Signup and view all the answers
Good timber does not ______ under changing environmental conditions.
Signup and view all the answers
Timber should be capable of resisting ______ loads.
Signup and view all the answers
The quality of timber must be ensured before using it for a ______.
Signup and view all the answers
Study Notes
Plywood Types and Uses
- Interior Plywood: Bonded with water-resistant adhesive, suitable for cabinetry, rough flooring, and finished walls.
- Exterior/Structural Plywood: Uses waterproof adhesive, ideal for wall sheathing, finished walls, roof sheathing, and concrete forms.
Laminated Timber
- Glu Laminated Timber: Process of bonding layers of lumber increases spanning capabilities and alters traditional construction techniques.
- Customization: Beams, arches, and various shapes can be fabricated, made from kiln-dried lumber for both interior and exterior applications.
- Prefinished Products: Typically prefinished in factories with protective wrapping before delivery.
Lumber Products
- Types: Includes rough framing members (minimum 2″ thick), finished lumber (e.g., flooring, trim, paneling), and specialty items (decorative panels, carved doors).
-
Classification:
- Rough-Sawn Lumber: Cut to size but not dressed or surfaced.
- Surfaced Lumber: Finished to size by planing (S2S for two sides, S4S for four sides).
Plywood Characteristics
- Construction: Made of several layers of lumber with grains arranged at right angles, typically using an odd number of layers for consistency in grain direction.
- Standard Size: Commonly available in 4' × 8' panels with thicknesses ranging from 1/8" to over 1".
- Economical Benefit: Modular size and uniformity enhance speed in construction.
Timber Uses and Importance
- Employed in structural applications (posts, beams, lintels) and various building components (flooring, roofing, ceilings).
- Utilized in decorative applications and furniture making, as well as in durable items like railway sleepers and sports goods.
Properties of Timber
-
Quality Assessment: Must be evaluated for various properties before usage.
- Color: Should be uniform; light color suggests weakness.
- Odor: Freshly cut timber should have a pleasant smell.
- Soundness: A clear ringing sound upon striking indicates good quality.
- Texture: Good timber exhibits fine and even texture.
- Grains: Close grains indicate quality timber.
- Density: Higher density correlates with stronger timber.
- Hardness: Harder timber is typically more durable.
- Warping: Quality timber does not warp with environmental changes.
- Toughness: Should withstand shock loads effectively.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
This quiz covers the differences between interior and exterior plywood, their uses, and bonding adhesives.