class info
DESCRIPTION
Class info. Website address: xlcrindustrialtechniques.weebly.com . What is today’s topic? Instructions: Use this phone pad diagram as the key to unlocking the topic for today. Example 4 is either G , H , I “42739663 263 76389663”. Hardwood and Softwood trees. Grade 8. softwood. - PowerPoint PPT PresentationTRANSCRIPT
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Class info
Website address:xlcrindustrialtechniques.weebly.com
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What is today’s topic?Instructions: Use this phone pad diagram as the key to unlocking the topic for today. Example 4 is either G , H , I
“42739663 263 76389663”
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Hardwood and Softwood trees
Grade 8
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softwood
• Softwood is a generic term used in woodworking and the lumber industries for wood from conifers. Conifers are needle-bearing trees from the order Pinales.
• Softwood trees are often harder than hardwood trees. Douglas fir, a softwood, is harder and stronger than many hardwoods. Balsa, a hardwood, is much softer than most softwoods
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Hardwood trees
• Hardwood trees are angiosperms, plants that produce seeds with some sort of covering. This might be a fruit, such as an apple, or a hard shell, such as an acorn. Hardwood comes from a deciduous tree which loses its leaves annually. Hardwoods tend to be slower growing, and are therefore usually more dense, but not always.
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Difference between hardwood and softwood
Uses:Hardwood Used for trimmings
and furniture but less frequently than softwood.
Softwood Widely used as woodware for building (homes/cabins) and furniture.
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Difference between hardwood and softwood
Cost:Hardwood is typically more expensive than
softwood.Softwood is typically less expensive
compared to hardwood.
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Difference between hardwood and softwood
Growth:Hardwood has a slower growth rate.Softwood has a faster rate of growth.Anular ring:Hardwood is Not DistinctSoftwood is Distinct
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Difference between hardwood and softwood
Density:Hardwood has a higher density and is
therefore usually harder.Softwood has a lower density, therefore
most softwood varieties are softer than hardwood.
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Difference between hardwood and softwood
Shedding of leaves:Hardwoods shed their leaves over a period
of time.Softwoods tend to keep their leaves
throughout the year.
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Difference between hardwood and softwood
Colour:Hardwood is Dark in colourSoftwood is Light in colourWeight:Hardwood is HeavySoftwood is Light
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Difference between hardwood and softwood
Fire Resistance:Hardwood is More fire resistantSoftwood is a Poor fire resistantConversion:Hardwood is Difficult to convertSoftwood is Easy to convert
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Examples of Softwood
• Spruce Colour• White uses• Wood pulp ,General
purpose joinery
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Examples of Softwood
Spruce lumber
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Examples of Softwood
• Scot pine Colour• Red or YellowUses• Light poles, Exterior
work, Railway sleepers
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Examples of Softwood
• Scot pine lumber
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Examples of Softwood
• Red Cedar colour• Reddish BrownUses• Building wooden
houses , Roofing shingles
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Examples of Softwood
• Red Cedar lumber
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Examples of Softwood
• Larch Colour• Reddish-brownUses• Farm gates• fences
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Examples of Softwood
• Larch lumber
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Examples of Softtwood
• Douglas Fir Colour• light tan to reddishUse• timbers, plywood. • railroad ties, mine
timbers, house logs, post and poles, fencing, and firewood..
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Examples of Softwood
• Douglas fir lumber
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Examples of Softwood
• Parana pine Colour• Light brown with
pinkish streak UsesGeneral purpose joinery
and building
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Examples of Softwood
• Parana Pine lumber
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Examples of Hardwood
• Oak Colour• red oak or white oak, Uses • tables, chairs,
cabinets, bookcases • storage units • wood flooring other
construction projects.• Wine barrels
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Examples of Hardwood
• Oak Lumber
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Examples of Hardwood
• Beech Colour• light brown Uses • an excellent firewood • furniture framing • carcass construction,
flooring • in plywood • household items
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Examples of Hardwood
• Beech lumber
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Examples of Hardwood
• Ash Colour• whiteUse• Handles, furniture,
cabinets, interior joinery, sports equipment,
baseball bats, auto bodies, and some musical instruments
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Examples of Hardwood
• Ash lumber
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Examples of Hardwood
• Sycamore Colour• white to light tan,
heartwood is a darker reddish brown
Use• cutting boards and
dramatic furniture.• drawer side • Doors
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Examples of Hardwood
• Sycamore Lumber
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Examples of Hardwood
• Elm Colour• dark brown or a
strong red tone. Uses• chest • a few chairs • outdoor furniture
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Examples of Hardwood
• Elm lumber
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summary
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1. What is the difference between hardwood and softwood?
2. Name five ways we botanical group hardwood and softwood trees
3. What type of softwood is used to make the following: Farm gate Wooden houses General joinery4. What type of hardwood is used to make the following: Garden furniture Wood tools Base ball bats