CHAPTER 3

Question 0

Woods basic defect is its combustibility, and its main advantage is its low cost. Wood cannot be manufactured fireproof or non-combustible, but it can be manufactured fire-retardant. Pressure treatment of wood in order to fire-retard the wood, decreases its allowed load by____%

Answer 0

25%

Question 1

When a fire has entered the inner structure of a ballon frame building it can spread to every part of the building in all directions. What are the correct tactics

Answer 1

• Investigate all parts of the building immediately
• Examine the attic before smoke, heat and fire make conditions untenable
• Fire moving up and down exterior stud channels can often be stopped by removing siding from the outside at the 2nd floor line, and the eave and foundation lines
• Collapse is a serious threat, so with fires in ballon frame buildings you should assign an officer to be an observer from the exterior

Question 2

Brick veneer walls have all bricks laid as stretchers (bricks laid lengthwise) and no headers (bricks laid across the wall with the ends showing). In a bearing brick wall, headers can be seen, usually every _____row.

Answer 2

7th Row

Note: Recently the use of metal truss masonry reinforcements has made it possible to omit the headers from the solid masonry wall. If a brick wall has all stretchers, suspect brick veneer, but you cannot be certain

Question 3

Masonry column-Masonry bracing incorporated into unstable masonry walls, often called piers, buttresses, pollsters or columns. Where visible they indicate where the wall is the

Answer 3

Strongest, often where concentrated loads are applied and where NOT to attempt to breach a wall

Question 4

Brick veneer walls have all bricks laid as stretchers (bricks laid lengthwise) and no headers (bricks laid across the wall with the ends showing). In a bearing brick wall, headers can be seen, usually every _____row.

Answer 4

7th Row

Note: Recently the use of metal truss masonry reinforcements has made it possible to omit the headers from the solid masonry wall. If a brick wall has all stretchers, suspect brick veneer, but you cannot be certain

Question 5

Masonry column-Masonry bracing incorporated into unstable masonry walls, often called piers, buttresses, pollsters or columns. Where visible they indicate where the wall is the

Answer 5

Strongest, often where concentrated loads are applied and where NOT to attempt to breach a wall

Question 6

The NYC Building Code prohibits

Answer 6

Open bar joist construction in high rise commercial buildings since 9/11