Structure Inspection Section#2 Floors Quiz#2

You should have finished Study Session 1 and Quick Quiz 1 before starting this Study Session.

The estimated completion time is 45 minutes.

Objectives
At the end of this Study Session, you should be able to:

• List five materials columns may be made of.
• List 13 common problems with columns.
• List two implications of column problems.
• Describe in one sentence each how looking, probing, measuring, and kicking can help identify column problems.

How may steel columns be fastened to steel beams? (three answers)

1. Bolting

2. Bendable tabs

3. Welding

How wide should the top of a column be, relative to the width of the beam above?

The same width

List 12 common column problems.

1. missing

2. settled

3. crushed

4. leaning

5. buckling

6. rust

7. poorly secured at the top or bottom

8. mortar deterioration

9. spalling concrete or brick

10. mechanical damage

11. rot or insect damage

12. heaved

13. prior repairs

List five common column materials.

1. Wood

2. Steel

3. Concrete

4. Masonary

5. Brick

Name three common causes of heaving columns.

1. expansive soils

2. tree roots

3. frost

What tool, in addition to your eyes, is commonly used to inspect columns?

A level or plumb bob

Which column materials are susceptible to crushing?

1. Concrete 
2. Wood

Why would columns settle? (Give three reasons)

1. footing too small

2. no footing

3. poor soil conditions under footing

4. larger than intended load on column

Columns are likely to rot at the -

Bottom

Columns transfer live and dead loads:

from beams to footings