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Wood Species

Spruce wood

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Spruce belongs to powerful and durable trees.

Under favorable conditionsit reaches height of 40-50 m.

The old giant specimens may rich 1.5 m in diameter and

the age of 300 - 400 years. The tree needs 100 years to have height of 35 m.

Spruce is widely used for landscaping and cities, especially its decorative forms.

The tree has broad crown, usually without branches.

Spruce bark is thin,of reddish-brown color, with a resinous secretions.

Needles are sharp, shiny, dark green, and their length exceeds 2.5 cm.

Spruce is an unpretentious tree. It carries easily considerable shade,

high humidity and even a slight soil waterlogging. When the weather is dry,

tree branches fall down, and when it is wet outside, before the rain, they rise up.

Spruce can even grow in cracks of rocks. Beeing under the tent of deciduous

trees and shrubs are favorable conditions for the tree, and soon

spruce drowns them.Spruce wood is valuable for its softness, lightness,

uniformity of structure, small gummosity, even white color, which won't turn dim.

It has diminutive fibers and even increase in diameter,

which provides its resonance properties.Spruce is used as a medicinal herb

for wound healing particularly.

Long time ago it was obligatory for pitch, tar, rosin, wood vinegar production.

The disadvantage of spruce is that its wood because of small amount

of pitch, rots quickly when staying outdoors.In physical and mechanical properties

it is inferior to pine, but in quality factor it dominates (3-4%).

Spruce wood is harder to chip than pine wood, because

of greater amount of knotholes, dark tarry knotholes and increased hardness,

which occurs very often.

 

Spruce properties:

Properties

Description

color

white

knots

abundant

growth rings

hardly visible

fiber

diminutive

texture

soft

nominal density

450 kg/m3

Use and application of wood:

Spruce wood is used to produce musical

instruments. It is also applied in paper industry.

Essential oil and vitamin C are extracted

from needles.

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Pine wood

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Pine is a beautiful conifer with smooth and thin barrel, common in cold

and temperate climates of the northern hemisphere, where it forms

forests and orchards on well drained soils and rocky slopes.

In average pine lives 350 years, reaching a height of 35 m to 75 m.

Water conditions:

Drought, period without rain lasts from 3 to 5 months.

Rainfalls total from 400 to 800 mm.

Pine is often used as building material. It has reddish-yellow or pale yellow colour.

But this does not affect working properties of the wood.

Soft structure of pine makes it easy to absorb different dyes.This refers to the lacquer.         

While drying pine wood doesn't deform It is durable, lightweight and does not cause

any difficulties in processing. In addition, due to high resin content, it is very resistant

to rot and influence of atmospheric phenomena. Pine wood (especially pine,

which grows in the western regionsof Ukraine) has high physical

and mechanical properties.

 

           Pine properties

Properties

Description

color

yellowish-red or pale yellow

growth rings

hardly visible

fiber

long, straight

texture

soft

nominal density

513 kg/m3


Use and application of wood:

Pine wood is used in industrial, residential,

rail, agricultural building, bridge-, ship, wagon-,

auto, agricultural machinery and aircraft

construction, in furniture manufacture, production

of building parts, packaging, etc.

 

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 Poplar wood

Poplar is a deciduous tree with broad top that can reach up

to 35 meters height and 2 meters in diameter.Its trunk is straight and cylindrical,

with a thick brown bark.

This species endure very hard frosts and boasts of great plasticity,

shown in its hybrids variety. It grows preferably in deep, muddy, fertile,

and neutral pH- aerated soils.

Popular products:

-        matches;

-        toothpicks;

-        popsicle sticks;

-        panels;

-        wooden packaging.

 

Poplar properties

Properties

Description

color

pale, almost white

knots

abundant

growth rings

hardly visible

fiber

straight

texture

soft

nominal density

720 kg/m2

 

Use and application of wood:

Poplar wood is used for low-value

production - production of pulp and lumber.

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Oak wood     

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Oak grows in foothill areas and reaches the 700-meter height.

It grows well in areas where rainfall exceeds 1500 mm per year.     

High strength and hardness of oak wood promotes production of small, but at

the same time, strong fastening connections.

Due to high tannin content, oak is considered to be most resistant to

rot (among all hardwoods). It also can bend and has a good texture and color.

 

Oak properties

Properties

Description

color

reddish brown

growth rings

hardly visible

texture

fine

nominal density

613 kg/m2

volumetric

13%

permeability

difficult to treat

    

Use and application of wood:

 Oak is often used in construction

 of buildings and bridges, railroad ties, columns,

 pillars, structures and the ship deck,

 in making beautiful, durable furniture.

 In addition, dense wood can decorate parts

 with relief carving.

Oak wood is applied in joiner,

furniture and floor production, in the manufacture

of laminated veneer lumber, agriculture, and in

the production of billets with staves for wine barrels.

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Ash wood

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Ash is a tall tree with openwork, high held crown and slender trunk.

It is durable, fast-growing, shade plant. Ash grows in the first tier of hardwood forests.

Ash wood is of high strength and toughness, mostly without cracking.

This tree is durable, resistant to rot, of very good texture, similar

to oak wood, gutters less and bends well while drying.

Static bending strength, striking density and edge hardness are 15% higher

compared with oak wood. Ash wood almost does not smell, and

the smell only occurs when it is fresh cut and processed.

 

Ash properties

Properties

Description

color

brownish yellow and light gray

growth rings

clearly visible

fiber

clear, rough, straight and wavy

texture

solid

nominal density

690 kg/m3

 

Use and application of wood:

It is used mainly for the production

of sports equipment, in-camp, wagon-,

shipbuilding, and furniture manufacture,

veneer and floor production, stair railings and

handles instruments.

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Beech wood

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Beech is a tree of mountainous areas only that lives 250 - 300 years

and reaches a height of 40 m and 2 m in diameter.

Beech wood has a high strength, good texture, but small resistance to rot.

Compared with oak, wood density, hardness and compressive strength along

the fibers is lower (2-10%), strength at static bending and striking

toughness are almost identical. It bends well being steamed.


Beech properties

Properties

Description

color

from pinky-yellow to reddish-brown

growth rings

clearly visible

fiber

thin, straight

texture

firm, tender

nominal density

680 kg/m3

 

Use and application of wood:

Beech wood is applied in in the manufacturing

of bent furniture, for making planing

veneer, parquet products,

musical instruments (cases).

It is also used in engineering, container,

skis, oars, shoe pads, heels, spool,

weaving shuttles, drawing tools

(lines, triangles, etc.) production.

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