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Week 5

Week 5. Drafting and Dimensioning the Architectural Floor Plan. Objectives. This chapter discusses how to draft and dimension a floor plan using straight-edged tools The single-family residence is the primary focus. What is a Floor Plan?.

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Week 5

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  1. Week 5 Drafting and Dimensioning the Architectural Floor Plan

  2. Objectives • This chapter discusses how to draft and dimension a floor plan using straight-edged tools • The single-family residence is the primary focus

  3. What is a Floor Plan? • Orthographic, two-dimensional drawing made by inserting a horizontal cutting plane 4'-0" above the ground • Shows lengths and widths, but not heights • The roof and walls above the cutting plane are “lifted up” • Cutting plane may be staggered at different levels • Example: split-level houses

  4. What is a Floor Plan?(cont’d.) Figure 8-1 A floor plan is made with a horizontal cutting plane 4'-0" above the ground.

  5. What Goes on in an Architectural Floor Plan? • Shows finished and unfinished space • Balconies, attached garages, decks, patios, and pools • Walls, wall openings, windows, doors, door swings, skylights, exposed beams, etc. • Room names and symbols that reference the plan to schedules, sections, and details • Each level of the building has its own plan

  6. What Goes on in an Architectural Floor Plan? (cont’d.) Figure 8-6 Construction drawing of a house floor plan.

  7. Symbols • Knowledge of symbols, poché, and wall thickness is needed to draw a floor plan • Items must be pochéd with line symbols that represent the material they are made of • Walls must be drawn with a thickness that represents their construction • Doors, windows, cabinets, drains, draperies, and other common items are drawn to represent their size and type

  8. Symbols (cont’d.) Figure 8-7 Different ways to poche a 6" exterior wood-frame wall.

  9. Drafting a Floor Plan • Decide which scale to use • Draw the plan’s overall width and length • Draw the exterior walls, the interior walls, door and window openings, the stairs and fireplace

  10. Drafting a Floor Plan (cont’d.) Darken the walls Draw cabinetry, appliances, plumbing fixtures, and door and window symbols, and outline the front and back porches Draw a second-floor plan

  11. Drafting a Floor Plan (cont’d.) Figure 8-25 If a furniture plan is needed, add furniture

  12. Types of Walls • Load-bearing walls can be interior/exterior • Non–load-bearing walls bear no weight • Partial walls are not full height • Partitions are non-load bearing interior walls • Chase is a passage between floors or walls • Dimensions are numbers that describe the size of features and their location from other features

  13. Types of Walls (cont’d.) Figure 8-31 Chase wall thickness for floor and wall-mounted fixtures

  14. Dimensioning Architectural Construction Plans • Essential rules for dimensioning are accuracy, completeness, and a single, legible interpretation • Architectural dimensioning is aligned • Imperial dimension notes in feet and inches • Circles and arcs are dimensioned from their center points

  15. Dimensioning Architectural Construction Plans (cont’d.) • Typically three stringers • Place exterior dimensions outside the plan to avoid overcrowding • Varies depending on whether building is standard, wood frame, or masonry • Doors and windows must be located on the drawings

  16. Dimensioning Architectural Construction Plans (cont’d.) Figure 8-35 Locate a circle’s or curve’s center from two directions.

  17. Dimensioning Architectural Construction Plans (cont’d.) Figure 8-34 Place a dimension note outside a space if there is not enough room to place it inside

  18. Dimensioning Architectural Construction Plans (cont’d.) Figure 8-39 Dimensioning practices for wood, masonry, and veneer construction

  19. Dimensioning Cabinet Industry Plans • Drawings are done to a 12" 1'-0" scale • Wall cabinets are drawn with a solid line • Appliances are dimensioned to their centers • Special features such as pull-out shelves and lazy Susans are not drawn • All numbers are given in inches or inches and fractions of inches • Height is from finished floor to ceiling

  20. Dimensioning Cabinet Industry Plans (cont’d.) Figure 8-42 Bathroom dimensioned to cabinet industry standards. Note that fixtures are dimensioned to their centers. Circled numbers reference millwork to a schedule.

  21. Summary • Floor plans are hard-lined once the layout is final • Fixed architectural features are shown in symbol form • Other symbols reference the plan to other drawings • Dimension notes show the size and location of the features • Dimensioning is done differently depending on the target audience for the drawing

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