1. Means of Egress Chapter 3 Part 1: Stairs ID 234 Building Codes
Fall 2008
Means of Egress
Chapter 3
Part 1: Stairs

2. General requirements for stairs
Minimum width 44” (non-residential)
Rise and run dimensions
Cannot get more narrow
Landings based on vertical rise
Guard rails when drop >27”
Handrails both sides (non-residential)
General requirements for stairs

3. Overall stair dimensions

4. Stair dimensions

5. When required?
Areas of Refuge

6. Areas of Refuge

7. Guard rails

8. Ramp railing dimensions

9. Think strategically Try to follow along Take notes
SketchUp Tutorial
Think strategically
Try to follow along
Take notes

10. Components and Groups Use GROUPS for similar repeated items
Use COMPONENTS for exact copies of repeated items
Components and Groups

11. Editing Double-click to edit Use quick move and rotate tools
Have nothing selected
Mouse over object to highlight
Click and drag
Editing

12. Painting behavior To paint all elements within a group, paint closed
To paint individual elements, open first
To paint all instances of a component, OPEN first
To paint only on instance, paint closed component
Painting behavior

13. Editing Components Freestanding are easy Surface-breaking
Hide/Display the rest of model
Surface-breaking
Explode first, then recreate
Editing Components

14. Complex uses: Stairs Create tread/riser component
11” minimum tread
7” maximum riser
Copy up and over to top of rise
Adjust # of copies
Adjust length if needed
Create group
Rotate runs as needed
Create landing as needed
Complex uses: Stairs