Lesson 1: Introduction to Shearwalls
Lesson 2: Adjusting Units, Snap Increments, and Site Information
Lesson 3: Diaphragm Analysis
Lesson 4: Shearwall Design: Capacity vs. Deflection Based Force Distribution
Lesson 5: Shearwall Design: Deflection Analysis
Lesson 6: Hold-Down Design
Lesson 7: Single Shearwall Design: An Example
Lesson 8: Outputs, Data and Information Management
Lesson 9: Modelling Techniques and Tips
Lesson 10: The Speed of Structural Design in Shearwalls
Résumé du cours
Lesson 10 Assessment
Difficulty Level: 5/5
Estimated Time to Complete: 30 minutes
Problem Statement: Design of a 3-Storey Building
The figure below shows a floor plan and elevation along with the preliminary shear wall locations for a 3-storey light wood-frame building. It is assumed that some preliminary calculations have been provided to determine the approximate length of the wall required to resist the lateral seismic loads.
Given Data:
- Building area: A = 12.2 m x 18.3 m
- Seismic mass
- Wr = 1.3 kN/m2 (roof) (Included dead load)
- Ws = 0.5 kN/m2 (full snow load on roof)
- Wf = 2 kN/m2 (floor)
- The mass of walls are already factored in the mass of floors
- Floor to floor height: h = 2.75 m
- The roof is flat (2 degrees slope and no overhang)
- Building is regular
- Building is located in Castlegar
- Site Class C soils
- Importance factor = 1.0
- Sheathing and framing
- Use DF Plywood for sheathing
- SS D.Fir. L (38 x 140) for framing
- Stud spacing: To be determined
- 4 Studs at each end of shearwall segments
- Hold-down type : HDU8-SDS2.5
- Use hold-downs on all segments
- Apply hold-downs at all openings
- Use the shearwall deflection to calculate rigidity, and distribute force on wall segments based on rigidity
- Always linearize deflection equation
Design Requirement:
Use the software to design the shearwalls and provide answers to the questions below.
Question 1
The sheathing material information can be found in page 3 of the Design Results.