Structure Inspection Section#3 Wall System Quiz#3

You should have finished Study Session 2 before starting this study session. This Study Session covers wood frame walls.

The estimated completion time is one hour.

Objectives
At the end of this study session, you should be able to:

• Describe platform and balloon frame construction in one sentence each.
• Describe the difference between load bearing and partition walls in one sentence.
• Describe two types of loads that walls see in one sentence each.
• List three functions of sheathing.
• List four ways to prevent racking of walls.

List five differences between a bearing wall and a partition wall

1. Partition walls have no structural elements below 
2. Load bearing walls rest on foundations, beams or another wall system 
3. Ends of floor or ceiling joists rest on load bearing walls but not partition walls 
4. Load bearing walls often have a wall directly above. Non-load bearing walls are less likely to have this. 
5. Door openings in load bearing walls have lintels. Openings in partition walls do not need lintels.

List four ways to prevent racking of exterior wood frame walls. 1. Interior finishes such as drywall, plaster or plywood  2. Exterior sheathings  3. Panel-type sidings  4. Diagonal bracing List three functions of sheathing. 1. support the siding 2. stiffen the wood frame walls 3. help prevent wind and water entering the building What are girts? (Include their function, location and material.) Girts are horizontal wood braces installed between studs to prevent buckling. They are typically installed near the mid-point of the wall. What is the difference between waferboard and OSB? In waferboard, the pieces are randomly oriented. In oriented strandboard (OSB), the wafers are aligned, at least on the faces of the panel. When is sheathing not needed? Sheathing is not needed if the building is otherwise protected from racking and weather, and the siding needs no support. In _____ framing, the wall studs extend through the subflooring. balloon Studs with splices are - (two answers) weaker more common in partition walls All of these words mean the same thing except: sill plate top plate <selected answer> base plate bottom plate sole plate Loadbearing wall studs should have holes no larger than - 1/3 to 40% of width, depending on authority Adjacent pieces of plywood sheathing should be butted tightly to enhance weather-tightness. False Bearing walls and partition walls are built in substantially the same way. True Openings in partition walls need lintels. False Sheathing paper (building paper) should act as a vapor retarder. False Walls see vertical loads only. False