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Three components of Tactical Diagramming ScienceScience Planning and building codesPlanning and building codes Terrain AnalysisTerrain Analysis SkillSkill.

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Presentation on theme: "Three components of Tactical Diagramming ScienceScience Planning and building codesPlanning and building codes Terrain AnalysisTerrain Analysis SkillSkill."— Presentation transcript:

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2 Three components of Tactical Diagramming ScienceScience Planning and building codesPlanning and building codes Terrain AnalysisTerrain Analysis SkillSkill Building practices and tactical diagramming practiceBuilding practices and tactical diagramming practice ArtArt Personal intuition, imagination and ingenuityPersonal intuition, imagination and ingenuity A techniquenot a tactic!A techniquenot a tactic! Procedures for performing specific tasks or functionsProcedures for performing specific tasks or functions

3 Building Codes Three "national" building codesThree "national" building codes Originally instituted for fire prevention and escapeOriginally instituted for fire prevention and escape Model codes rather than regulatory but usually adopted locally as requirementsModel codes rather than regulatory but usually adopted locally as requirements Local zoning ordinancesLocal zoning ordinances Uniform Building Code Southern Building Code Building Officials and Code Administrators

4 Building Codes National Building Code of CanadaNational Building Code of Canada Adopted in 1941Adopted in 1941 Originally instituted for fire prevention and escapeOriginally instituted for fire prevention and escape Model code rather than regulatory but usually adopted locally as requirementsModel code rather than regulatory but usually adopted locally as requirements Local zoning ordinancesLocal zoning ordinances

5 Reverse Engineering Mentally disassembling a house to visualize the interiorMentally disassembling a house to visualize the interior Knowledge of building code requirements helpful but not essentialKnowledge of building code requirements helpful but not essential Familiarization with building practices is largely already availableFamiliarization with building practices is largely already available Personal experiences and observationsPersonal experiences and observations Especially useful for police and militaryEspecially useful for police and military All buildings are built for a purpose and many are altered to suit particular usesAll buildings are built for a purpose and many are altered to suit particular uses

6 Building Practices Driven by economic and aesthetic factorsDriven by economic and aesthetic factors Size and shape of house and organization of roomsSize and shape of house and organization of rooms Expense of installation and cost of materialsExpense of installation and cost of materials Cultural conventionsCultural conventions Enables mass produced goods and componentsEnables mass produced goods and components Examples include window coverings, hardware, cabinets, furniture, plumbing fixtures, and so forthExamples include window coverings, hardware, cabinets, furniture, plumbing fixtures, and so forth Some have been incorporated into local ordinancesSome have been incorporated into local ordinances Just as influential as regulationsJust as influential as regulations Tend to be universal rather than regionalTend to be universal rather than regional

7 Building Principles Four elements that must be controlledFour elements that must be controlled Fire, Wind, Water, GravityFire, Wind, Water, Gravity Use of building will strongly influence constructionUse of building will strongly influence construction Buildings are hollowBuildings are hollow Limitations on span by materials and expenseLimitations on span by materials and expense Nearly all residences in America are "stick framing"Nearly all residences in America are "stick framing" Interior walls are used for intermediate supportInterior walls are used for intermediate support Bearing walls are more predictable than partitionsBearing walls are more predictable than partitions

8 Coup d'oiel French"The vision behind the eye"French"The vision behind the eye" English translationperceptive insightEnglish translationperceptive insight An ability to "see" on the other side of the hill or inside a houseAn ability to "see" on the other side of the hill or inside a house Part art and part sciencePart art and part science

9 Helpful Hints Work from large to smallWork from large to small Start with orientationStart with orientation Next go to building outlineNext go to building outline Diagram floor plan lastDiagram floor plan last Work from confidence to ambiguityWork from confidence to ambiguity Sketch in as many features that can be reliably placed and sized firstSketch in as many features that can be reliably placed and sized first CompareCompare What you know or believe to what you seeWhat you know or believe to what you see Be suspiciousexplain incongruitiesBe suspiciousexplain incongruities Don't be afraid of "I don't know!"Don't be afraid of "I don't know!"

10 Residential Trivia Size of house ~2,450 square feet (median)Size of house ~2,450 square feet (median) Typical three-bedroom in Southwest USA is about 1,400 sq. ft.Typical three-bedroom in Southwest USA is about 1,400 sq. ft. 80% built since % built since 1920 About 2/3 will have an attached garage or carportAbout 2/3 will have an attached garage or carport Almost half will have a separate dining roomAlmost half will have a separate dining room More than 2/3 are occupied by the ownerMore than 2/3 are occupied by the owner More than 3/4 are single-family structuresMore than 3/4 are single-family structures Approximately 90 million homes in USAApproximately 90 million homes in USA Each has more in common with the others than differencesEach has more in common with the others than differences

11 Frequently Asked Questions Why focus on residences?Why focus on residences? Most common target for warrantsMost common target for warrants Public buildings provide far easier access to gain infoPublic buildings provide far easier access to gain info How long does it take?How long does it take? Varies with amount of desired detail and complexity of buildingVaries with amount of desired detail and complexity of building Generally, figure minutes for most applicationsGenerally, figure minutes for most applications How accurate can a diagram be?How accurate can a diagram be? Depending on resource photos, as close as six inches for a room and a foot for a buildingDepending on resource photos, as close as six inches for a room and a foot for a building Features can be precise!Features can be precise! Many features, like doors and windows, can be estimated within one inchMany features, like doors and windows, can be estimated within one inch

12 Useful Tools ¼ ʺ graph paper¼ ʺ graph paper Good scale for nearly all diagramsGood scale for nearly all diagrams Mechanical pencil with HB leadMechanical pencil with HB lead Soft lead with dark lines but easily erasedSoft lead with dark lines but easily erased Compass or dividersCompass or dividers Easy and accurate transfers of scaleEasy and accurate transfers of scale Gum eraser, especially pen styleGum eraser, especially pen style Computer softwareComputer software By far, the easiest and simplest method for diagrammingBy far, the easiest and simplest method for diagramming Some are automatically defaulted for sizes and codesSome are automatically defaulted for sizes and codes Provide instant 3D versions, including walk- throughsProvide instant 3D versions, including walk- throughs Sketchupfree version from GoogleSketchupfree version from Google Chief ArchitectBetter Homes and GardensChief ArchitectBetter Homes and Gardens Punch ProPunch Software, less than $100Punch ProPunch Software, less than $100

13 Useful Books Look for illustrations as well as narrativeLook for illustrations as well as narrative Comprehensive overview is better than detailed informationComprehensive overview is better than detailed information You dont need to read them, youll use them for reference and precisionYou dont need to read them, youll use them for reference and precision

14 Tactical Diagramming Book Used as text for this courseUsed as text for this course Written from a tactical perspective rather than a buildersWritten from a tactical perspective rather than a builders Heavily illustrated with examples, graphics, photographs, etc.Heavily illustrated with examples, graphics, photographs, etc. Focused entirely on tactical diagrammingFocused entirely on tactical diagramming

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