Unit 8 Module: Testing of Wood Samples for Bending, Compression, Shear, Tension and Water Content

Question 1

the woody materials of trees that are suitable for house construction, bridge and ship
building, furniture and cabinet making, carving and engraving for most structures used in agriculture,
commerce and industries.

Answer 1

Timber

Question 2

fibrous substance which composes the pith and the bark

Answer 2

Wood

Question 3

the lignified water conducting, strengthening and storage tissues of
branches, stem and roots of trees.

Answer 3

Wood

Question 4

also known as “xylem”.

Answer 4

Wood

Question 5

the most common building materials because of the following properties: a strong
material, has durability, light in weight, ease of fastening; and with artistic and natural beauty.

Answer 5

Wood

Question 6

classified as good lumber used in building construction are those that grows
larger by the addition of new layer on the outer surface each year identified by botanists as “oxygen’s”

Answer 6

Wood

Question 7

Some trees
grow up to _____ in diameter per year or more.

Answer 7

1/8” to½”

Question 8

rowing trees which are the most preferred for lumbering

Answer 8

endogenous

Question 9

This kind of tree is less preferred for lumbering because of
the center core of its log which is soft and brittle in character.

Answer 9

Endogenous Trees

Question 10

refers to the quality of the mass and volume of the wood s

Answer 10

Density

Question 11

The characteristics of the tree when it comes to its leaves are: ____________

Answer 11

needle shaped and broad
shaped.

Question 12

varies from either of the following: white,
yellow, orange, red, brown and black, etc.

Answer 12

Shades or Color of wood

Question 13

The grain of wood is classified into: _________________

Answer 13

straight grain, cross grain, fine grain and coarse grain.

Question 14

the general term used in reference to the ability of wood to resist stresses and strain.

Answer 14

Strength

Question 15

resistant to compression along the fibers

Answer 15

Wood

Question 16

r the ability to resist bending as in floor joists and beams supporting heavy load.

Answer 16

Stiffness

Question 17

an important factor in the strength of wood. Thus, to a certain extent, strength increases with
the degree of seasoning of wood.

Answer 17

Moisture

Question 18

also important consideration. Heavy woods are generally strong, light wood are usually
weak.

Answer 18

Weight of wood

Question 19

expressed as resistance to indentation or to the saw or axe across the grain.

Answer 19

Hardness

Question 20

is
dependent largely on weight, structural elements of the wood and degree of seasoning. This feature is
important in several methods of utilization such as flooring, furniture, cross ties, handles and many small
wood articles.

Answer 20

Hardness

Question 21

is the resistance of wood to cleavage along the grains. The line of least resistance in cleavage
is along the radius because the wood rays are in this direction.

Answer 21

Cleavability

Question 22

refers to combined strength, shock resistance and pliability of wood

Answer 22

Toughness

Question 23

The moisture content of wood varies from ___ to ___ by weight and it is defined as the ratio
weight of moisture or water in a piece of wood to the oven dried weight of wood.

Answer 23

8%, 25%