Structure of a Floor

1. The first part of the flooring system that sits on top of the foundation is called the...

• Floor joist
• Sill plate
• Fire blocking
• Subflooring

2. What is the purpose of the "Post and Girder"?

• It provides extra room for the floor joist.
• It supports the floor joist and all the loads on top of it.
• Provides extra space in the basement.
• ONLY supports the 2nd floor sill plate.

3. Floor joist are supposed to be placed how many inches apart?

• 12"
• 24"
• 16"
• 18"

4. What part of the flooring system is a safety net against the spread of fire?

• Post
• Band joist
• Fire blocking
• Fire proof wood

5. What part of the flooring system helps prevent the twisting of the floor joist?

• Band joist
• Bridging
• Post and Girder
• Sill plate

6. What is the purpose of the sub flooring?

• Provides support for the post and girder.
• Helps support the sill plate.
• Keeps the joist from twisting.
• Provides a surface to walk on and flooring material to be installed on top.

7. The band joist...

• Sits on top of the sill plate.
• "Caps" the ends of the floor joist.
• Plays music while the home is being built.
• Support the ceiling loads.

8. (Check all the apply) The floor joist support what type of loads?

• The load from the piano in the room.
• The load from the 20 people at a party in the room.
• The load from the subflooring and other flooring materials.
• The load from some annoying child jumping around in his bedroom.

9. What two parts of the flooring system can do the same job?

• Post and Girder
• Fire blocking and bridging
• Floor joist and sill plate
• Subflooring and band joist.

10. Which one of the below situation is true?

• The subflooring has to be installed prior to the walls being built.
• The subflooring needs to be installed prior to the sill plate.
• The sill plate is installed on top of the foundation BUT on top of the floor joist.
• The wall must be built and installed first and then the subflooring is installed.