Exercise 1.1 - Overview on Timber Design

Why would a designer choose to use Pine over Mahogany?

• Pine is sustainable.

• Pine is more expensive.

• Pine has a nicer aesthetic.

• Pine comes in larger sizes.

Seasoning timber is when it is dried out to lower the moisture content. What happens to unseasoned timber?

• It increases strength.

• It attracts insects.

• It causes skin rashes.

• It warps and bends.

It is a wood used as structural materials

• Composite Materials

• Timber

• Steel

• Reinforced Concrete

The following item are the factors that influence the strength of structural timber materials except;

• unit weight

• density

• material defects

• moisture content

For the protection of life and property, the design of structures like timber materials and for the preparation of its structural plans is regulated and controlled by this code which was initially published by Association of Structural Engineer of the Phils. (ASEP).

• Occupational Safety and Health Standards

• Building Code of the Phils.

• Philippine Environment Code

• National Structural Code of the Phils.

For 8 pieces of 2 x 4's and 12' long, the equivalent value in board feet is

• 48

• 16

• 64

• 72

A defect of wood which has the characteristics of separation along the annual ring and it reduced the resistance to shear not to longitudinal compression.

• shake

• check

• split

• decay

Weight of wood is approximately _____ times the weight of water.

• 2.5

• 1.8

• 1.53

• 1.48

It is a joists less than 4 inches thick.

• beams

• planks

• stringers

• sash

It is defined as the product of the saw and planing mill not further manufactures thru by sawing, re-sawing.

• Lumber

• Carpentry works

• Planks

• Timber