1. U2-L5
March 17, 2008
QUIZ WEDNESDAY
Home Construction and Architecture Styles and Vocabulary
Take out your note sheet for notes on residential framing

2. Wood-Frame Systems SKELETON-FRAME CONSTRUCTION
U2-L5
Wood-Frame Systems
SKELETON-FRAME CONSTRUCTION
Wooden structural members are joined.
They make an open framework for the structure.
Open framework is then covered with layers of other construction materials to form solid surfaces.

3. Wood-Frame Systems LUMBER Hardwoods
U2-L5
Wood-Frame Systems
LUMBER
Hardwoods
Withstand much wear – flooring and railings
Fine natural finish – cabinets and furniture
From broad-leaved trees – oak, walnet, birch, cherry, mahogany, maple
Softwoods
Used for structural members – joists, rafters, studs, sheathing
From coniferous trees – Douglas fir, pine, cedar

4. Wood-Frame Systems LUMBER Plywood
U2-L7
Wood-Frame Systems
LUMBER
Plywood
Thin sheets of wood (plies) laminated together with adhesive
Can be made in wide sheets and is structurally stable
Construction-grade (softwood)
Veneer-grade (hardwood)

5. Wood-Frame Systems LUMBER Nominal dimensions Actual dimensions
U2-L7
Wood-Frame Systems
LUMBER
Nominal dimensions
Size wood is cut
Actual dimensions
Wood dries, shrinks
Surface of lumber is “finished” (smoothed)

6. Wood-Frame Systems Wood-Framing Methods Balloon Framing
U2-L5
Wood-Frame Systems
Wood-Framing Methods
Balloon Framing
Invented during the age of the Queen Ann Victorian Style
Studs are continuous for the full height of the building and joists butt against them
Rarely used today
STUD – vertical framing member to which materials are fastened
JOIST – horizontal framing member used to support ceiling or floor

7. Wood-Frame Systems Wood-Framing Methods Platform Framing
U2-L5
Wood-Frame Systems
Wood-Framing Methods
Platform Framing
Used most frequently today
The second floor rests directly on first-floor exterior walls
STUD
JOIST

8. Wood-Frame Systems POST-and-BEAM CONSTRUCTION
U2-L5
Wood-Frame Systems
POST-and-BEAM CONSTRUCTION
Heavy timbers used for floors and roofs.
Larger structural members than skeleton-frame construction – and spaced farther apart.
3 basic components – posts or columns, beams, and planks.
Many members remain exposed for visual appeal.

9. U2-L5
REVIEW
POST-and-BEAM CONSTRUCTION
SKELETON-FRAME COSTRUCTION

10. U2-L5
REVIEW
BALLOON FRAMING
PLATFORM FRAMING

11. U2-L5
REVIEW
LUMBER
Hardwoods
Softwoods

12. U2-L5
REVIEW
LUMBER
Plywood
2 Grades:
Construction-grade
Veneer-grade

13. U2-L5
REVIEW
LUMBER
Nominal dimensions
Actual dimensions

14. U2-L5
REVIEW
STUD
JOIST

15. U2-L5
Wood-Frame Systems
Rough Framing of a house is divided into 3 general areas:
Floor Framing System
Wall Framing System
Roof Framing System

16. Floor Framing Systems Wall Framing Systems 7 8 6 5 4 3 2 1
U2-L5
Floor Framing Systems
Wall Framing Systems 7 8
T-Foundation
Sill
Header
Joists
Subfloor
Plate
Stud
Finished Floor 6 5 4 3 2 1

17. U2-L8
Floor Framing Systems
Go to Sketchup File

18. Wall Framing Systems Studs are placed 16” OC (on-center) Trimmer studs
U2-L5
Wall Framing Systems
Studs are placed 16” OC (on-center)
Trimmer studs
Cripple studs
Plate and DBL top plate