1. Chapter 32
Drawing Framing Plans

2. Introduction A framing plan is used to show: Dimensions
Framing members
Methods of resisting gravity
Seismic loads and wind loads for specific levels of a structure

3. Managing Components Represented on a Framing Plan
Simple one-level house using truss roof
Architectural and structural information can often be combined on floor plan
Custom multilevel structure
Separate plans are developed for architectural and structural requirements of each level

7. Managing Components on a Framing Plan (cont’d.)
Framing members
Key element is to specify locations of:
Headers
Beams
Posts
Joists
Trusses

9. Managing Components on a Framing Plan (cont’d.)
Seismic and wind resistance
Severity of lateral loads will varies
Plywood or OSB shear panels, extra blocking, metal angles, and metal connectors are used to resist forces

10. Managing Components on a Framing Plan (cont’d.)
Dimensions
Process is the same as a floor plan
If a separate framing plan is to be drawn, the floor plan is usually not dimensioned
Where joists extend past a wall, cantilever length must be dimensioned
Many professionals place general notes on the framing plan to ensure compliance
Detail reference symbols are also used

11. Resisting Lateral Loads Using the Prescriptive Path of the Code
Prescriptive design methods
Provided by IRC
Ensure a structure will be able to resist lateral loads
Ceiling and wall heights
Wall placement
Design criteria for wind speeds below 110 mph

12. Resisting Lateral Loads Using the Prescriptive Path (cont’d.)
Prescriptive design methods (cont’d.)
Depending on municipality, prescriptive and design methods may not be allowed on the same house
State and local municipalities altered contents of IRC Section —Wall Bracing

13. Resisting Lateral Loads Using the Prescriptive Path (cont’d.)
Basic terms and concepts
Shear panel
Braced wall panels and lines
LIB, DWB, WSP, SFB, GB, PBS, PCP, HPS, ABW, PFH, PFG
Alternative braced wall panel
Portal frame with hold-downs
Portal frame adjacent to openings at garage
Simpson Strong-Wall

14. Resisting Lateral Loads Using the Prescriptive Path (cont’d.)
Combining reinforcement methods
IRC allows bracing methods to be combined
Intermittent bracing methods can be used on one level and continuous sheathing methods on another
Varied intermittent bracing methods can be used within the same level
On single-level homes in seismic design categories A, B, and C, varied methods of intermittent bracing can be used in same braced wall line

15. Resisting Lateral Loads Using the Prescriptive Path (cont’d.)
Placement of panels within a braced wall line
May vary depending on local conditions and seismic risk
Follow IRC standards
Refer to the text

16. Resisting Lateral Loads Using the Prescriptive Path (cont’d.)
Applying code requirements to a simple home
Required reinforcing depends on:
Seismic design category (SDC)
Soil class
Expected wind speed
Number of building levels above braced wall line
Method used to construct panel reinforcement

17. Resisting Lateral Loads Using the Prescriptive Path (cont’d.)
Continuously sheathed braced wall lines
3/8" thick sheathing nailed to wall studs with 6d common nails at 6" O.C. at panel edges and 12" O.C. at intermediate supports
Must be applied to all surfaces of one wall side
CS-G continuous sheathing garage
CS-PF continuous sheathing portal frame

18. Resisting Lateral Loads Using the Prescriptive Path (cont’d.)
Support of braced wall lines
For homes constructed with wood floor systems, additional guidelines must be met
Refer to the text
Representing wall reinforcement
Location of wall panels must be clearly marked
Materials may be specified in a table

19. Completing a Framing Plan
Order used to draw framing plan depends on:
Method of construction
Level to be framed

20. Roof Framing Plans Similar to roof plan
Shows structure shape and roof outline
Shows size and direction of framing members used to frame the roof
Varies depending on construction methods (e.g., trusses or western platform)

21. Roof Framing Plans (cont’d.)
Refer to the text for instructions on drawing:
Roof plan base drawing
Gable roof framing plan with truss framing
Gable roof framing plan with rafter framing
Hip roof framing plan with truss framing
Hip roof framing plan with rafter framing
Dutch hip roof framing plan with truss framing
Dutch hip roof framing plan with rafter framing

22. Floor Framing Plans
Framing plan can be completed by using base drawings for floor plans
Ideally a Mylar copy of the floor plan should be made after walls, doors, windows, and cabinets are drawn
If a copy was not made prior to completing floor plan, layout can be traced
Refer to the text for instructions

23. Checklists Refer to the text for: Roof framing plan checklist
Truss-framed roof
Stick-framed roof
Framing plan checklist
Braced wall lines
Dimension line placement
Dimensions
Notes