Please do all your work and report your answers on separate sheets of paper
(not on these sheets). Be sure to put your name on each sheet and to show
enough of your work to demonstrate your method.

1. 20 points -- Define the following terms (a definition should be no longer
than ten or twelve words):

 A) Solidus
 B) Endurance Limit
  C) Killed Steel
 D) Allotropic
 E) Toughness

2. 20 points -- Identify the following terms (the words which the letters
represent):

 A) BCC
 B) AISC
 C) BOF
 D) BHN
 E) MOH

3. 15 points -- Name three types of primary bonding for atoms.

4. 15 points --  True? or False?

 1. A blast furnace produces iron, not steel.

 2. An ion has an equal number of electrons and protons.

  3. The inverse lever law is used to predict the toughness of metals.

 4. Steel has a carbon content above 2.0%; iron has a carbon content below
2.0%.

 5. Aluminum is stiffer than brass.

5. 10 points -- To achieve the desired properties for a specific grade of
steel, it is required that it contain 1.75% cementite at room temperatures
(Figure 13-4 in the Lecture Notes). How can this be achieved?

6. 20 points -- The following member sizes are available (1" square, 1.5"
square, 2.0" square, 2.5" square, 3.0" square, and 3.5" square) in the
following grades of steel (A572 Grade 50, A572 Grade 60, A572 Grade 65, A588,
A852, and A514 Grade A). Select the minimum cost member and steel grade for
the following applications:

a) Highway bridge in Iowa, dead load 45 kips tension, total load 55 kips
tension, client desires to eliminate painting costs

b) Highway bridge in Iowa, Kl/r = 130, dead load 45 kips compression, total
load 55 kips compression, client desires to eliminate painting costs

c) Bridge suspenders, dead load 45 kips tension, total load 55 kips tension
 
d) Bridge post, dead load 10 kips tension, total load 55 kips tension, two
million cycles of loading
 
e) Bridge diagonal, Kl/r = 130, dead load 45 kips compression, total load 55
kips compression