Traffic Areas

1
Traffic Areas

• Passage from one room to another
• Minimum space should be allotted.
• Avoid traffic areas that require the passage
  through one room to get to another.
• Long hallways should be avoided.
• Hallways should have adequate lighting.
• Minimum hall width is determined by building
  codes but must be wide enough to accommodate the
  moving of furniture. 3-6 would be acceptable.

2
Stairs

• Types
• U-Shaped
• Straight-Run
• Wide L-Shaped
• Double L-Shaped
• Long Run L-Shaped
• L-Winder
• Wide L-Shaped
• Spiral
• Wide U-Shaped (See page 179)

3
Stairs

• Terms
• Tread The horizontal member of each step on
  which a person steps.
• Riser The vertical face of a step
• Rise The distance from the top surface of one
  tread to the same position on the next tread.
• Landing Platforms that allow a change in
  direction of a staircase.

4
Staircase
5
Staircase

• Terms
• Run The distance from the face of one riser to
  the face of the next.
• Stringer A structural member that supports the
  treads and risers.
• Total Rise The total floor-to-floor height of
  the stairs.
• Total Run The total horizontal length of the
  stairs.

6
Staircase
7
Staircase

• Rules
• Slope Angle 30 to 35.

8
Staircase

• Rules
• 2(Risers) 1 Tread 25

9
Staircase

• Rules
• Riser Height(Tread Width)75

10
Staircase

• Rules
• Riser Tread 17 to 18

11
Staircase

• Calculations
• Find the Total Rise.
• TR 9 6-1/4
• TR 9(12) 6-1/4
• TR 108 6-1/4
• TR 114.25

12
Staircase

• Calculations
• Divide the Total Rise by an ideal riser height
  (7 to 7-5/8). This will find the approximate
  Number of Risers needed for the design.
• NR 114.25/7.50
• NR 15.23
• (use) NR 15

13
Staircase

• Calculations
• Divide the Total Rise by the Number of Risers to
  find the exact Riser Height.
• RH 114.25/15
• RH 7.616
• RH 7.62

14
Staircase

• Results
• Total Rise 9 6-1/4
• Number of Risers 15
• Riser Height 7.62
• Number of Treads 14 (one less than the
  number of risers)

15
Stairs

• Terms
• Tread Average depth is 10.
• Riser Average riser height is 7-¼.
• Minimum width 3-0 (3-6 to 4-0 is
  better).
• Headroom Minimum is 6-6 (up to 7-0 is
  better)
• Landing Should be planned for staircases with
  more than 16 risers.

16
Area Planning

• Square Footage The product of the length and the
  width of a room. If a room measures 12 x 14
  the square footage is 12 x 14168 sq. ft.
• Entrances The entrance of a house can open into
  the living room area, however a foyer can be
  designed in the plan.
• Open plan A design that uses fewer walls,
  vaulted ceiling, and fewer dividers to separate
  rooms.

17
Area Planning

• Closed plan A design separated by solid
  partitions (walls) and doors.
• Décor A pattern of decoration.
• Foyer An inside entrance.
• Motif Theme used for architectural design
• Special Purpose Rooms Den, Study, music room,
  exercise room, etc.
• Great room Combines the functions of a living
  room, dining room, and family room.

18
Area Planning

• Formal living room Closed, small, and usually
  has formal furniture.
• Informal living room Family room. Designed for
  television viewing, etc. Also known as the
  multi-activities room.
• Serving Wall Separation between the dining room
  and kitchen used to pass items through.
• Spacing Min. of 2-0 allowed between a chair
  and wall when the chair is pulled out.

19
Area Planning

• Spacing 2-3 between people when seated at the
  dining room table.