Symbols hatchings
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Transcript of Symbols hatchings
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Symbols and Hatchings
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Unit 101/501: Principles of Building Construction, Information and Communication
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Learning Objective
To be able to identify symbols and hatchings from drawings in relation to BS 1192
City & Guilds | L1 Carpentry & Joinery 6706-13
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All sections of the UK Construction Industry should follow a set of official British Standards for symbols and hatching: BS 1192.
Symbols are a simplified representation of an item (eg a run of stairs).
Hatching is a term given to the markings that indicate the type of material that something is constructed from (eg stone, plywood).
Symbols usually appear on floor plans; hatchings usually appear on sectional drawings.
City & Guilds | L1 Carpentry & Joinery 6706-13
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What symbols can you recognise on this floor plan?
City & Guilds | L1 Carpentry & Joinery 6706-13
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RangeYou must be able to identify:
WCSinkBath
Door Window
Rough Sawn Timber (unwrot)Prepared Timber (wrot)
BrickworkBlockworkConcrete
HardcoreSub Soil/Earth
Insulation Damp Proof Course (DPC)Damp Proof Membrane (DPM)
City & Guilds | L1 Carpentry & Joinery 6706-13
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Brickwork, Blockwork and Concrete
Brickwork
Blockwork
Concrete
Stonework
City & Guilds | L1 Carpentry & Joinery 6706-13
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Concrete is made up of….?City & Guilds | L1 Carpentry & Joinery 6706-13
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Concrete is made up of:
• Coarse aggregate (gravel 5mm to 50mm)
• Fine aggregate (natural sand/tiny pebbles, up to 5mm)
• Cement• Water• Additive (plasticiser)
And if required (eg for foundations)
• Steel reinforcement (rebar)
City & Guilds | L1 Carpentry & Joinery 6706-13
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Hardcore and Sub-soil/earth
Hardcore
Sub-soil (earth)
City & Guilds | L1 Carpentry & Joinery 6706-13
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Timber Rough sawn (unwrot)
Generic wrot (prepared) timber:
Softwood (machined all round)
Hardwood (machined all round)
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DoorsCity & Guilds | L1 Carpentry & Joinery 6706-13
As shown on floor plan
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Lights (windows) Light, as shown on floor plan
Standard casementArrow points to hinge (in this example, hung on right)
Double hung (standard sliding sash)
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Plumbing / AblutionCity & Guilds | L1 Carpentry & Joinery 6706-13
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Insulation
Batt and roll (blanket)insulation
Cavity wallinsulation
Rigid (board)insulation
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