Chapter 10

Question 1

Fire resistive, in contrast to noncombustible construction, is permitted to be of ___ height.

Answer 1

Unlimited

Question 2

Many non combustable building are ___ stories in height, with the max being ___ stories for certain types of occupancies.

Answer 2

1-3 stories

12 stories

Question 3

Noncombustible construction relies heavily on the use of ___ for its structural system.

Answer 3

Steel

Question 4

The use of ___ in Type 2 construction is typically limited to the exterior walls and shaft enclosures.

Answer 4

Concrete

Question 5

The modulus of elasticity of steel is ___.

Answer 5

29 million psi

Question 6

Steel’s compressive strength is equal to its ___ strength.

Answer 6

Tensile

Question 7

Steel’s shear strength is about ___ of its tensile strength.

Answer 7

3/4

Question 8

Cold drawn steel, such as steel tendons used for tensioned concrete and for exaction tie backs and elevator cables, will fail at about ___.

Answer 8

800°F

Question 9

The variety of steel shapes available has led to a specific nomenclature for specifying structural steel members.
The following abbreviations are used:
C:
CB:
L:
S:
W:
WT:

Answer 9

C: channels
CB: castellated beams
L: angles
S: America Standard (I-beams)
W: wide flange beams and columns
WT: structural tees

Question 10

Structural steel uses the shape abbreviation and a set of two numbers on architectural blue prints. The first number refers to the ___ of the member in inches, while the second number refers to the weight of the member ___.

Answer 10

Depth

Per foot of length in pounds

Question 11

Steel angles use three numbers to to identify the the steel member on blueprints. The first two refer to the ___ of the two “legs”, while the last number refers to the ___ of the legs.

Answer 11

Nominal depths

Thickness

Question 12

Rigid frames can provide clear spans of about ___ feet.

Answer 12

100 feet

Question 13

___ is used where an explosion is a possibility.

Answer 13

Friable construction

Question 14

Aluminum melts around ___.

Answer 14

1,200°F

Question 15

Steel will expand ___ to ___ % in length for each 100°F rise in temperature.

Answer 15

0.06 to 0.07%

Question 16

Heated to 1,000°F, a steel member will expand ___ inches over 100 feet of length.

Answer 16

9 1/2”

Question 17

A steel column will fail when a temperature of ___ is exceeded at one point or ___ is exceeded on the average in the column.

Answer 17

1,200°F

1,000°F

Question 18

In some building codes, steel used to support roofs at a certain distance above the floor (usually ___ to ___ feet) does not require protection.

Answer 18

20 to 30

Question 19

Steel does not require protection in atria roofs over ___ feet above the floor.

Answer 19

55

Question 20

4 types of protection for steel structures.
1.
2.
3.
4.

Answer 20

Unprotected
Dynamically protected
Passively protected
Passive/dynamic combination protection

Question 21

A 2 1/2” hose line can easily throw a horizontal stream more than ___ feet.

Answer 21

80 feet

Question 22

Steel fire escapes must be certified every ___ per code.

Answer 22

5 years