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37 Cards in this Set
- Front
- Back
The brittle quality of cast iron kept it from being used in ______; it could only be used in ________ |
Tension Compression |
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The construction of which bridge marked the end of the era in which stone and timber were the dominant building materials? |
Cast iron bridge near coalbrookdale |
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What metal quickly replaced cast iron as a structural material in the late 1700s? |
Wrought Iron |
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Up until the 19th century, what was the problem in using steel over iron? |
It was high in cost |
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In 1855, Henry Bessemer patented a process for making steel cheaply and in large quantities. During this process, why is a blast of air blown through the molten metal? |
It helps burn off impurities and carbon |
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During the construction of the Brooklyn bridge, what process was used for the first time as a means of protecting steel wire? |
Galvanizing |
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Until the introduction of elevators, commercial buildings were generally limited to how many floors in height? |
5 floors |
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Because of its lack of high tensile strength, cast iron was not used in long spans. How was it used in the construction of buildings during the middle to late 1800s? |
Single window units, with the repetition of units creating the visual effect of the front |
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In the late 19th century technical advances in elevators allowed commercial buildings to reach the practical height limits (for a structure with solid walls) of how many floors? |
10 floors |
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What type of construction allowed buildings to go higher than 10 floors? |
Skeleton construction consisting of columns, girders, and beams |
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In skeleton constructions, what does the cage consist of? |
Columns, girders, and beams |
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Charles Schwab was the organizer and president of what well known company? |
Bethlehem Steel Company |
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Name this rolled structural shape |
Angle |
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Name this rolled structural shape |
Channel |
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Name this rolled structural shape |
Beam |
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Though popular through the early 1900s, rivets have largely been replaced by _______ in new construction. |
Bolts |
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In a riveting gang , what job uses a pneumatic hammer to pound the red hot end of the rivet flat against the steel? |
Riveter |
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In a riveting gang, what job places rivets in the forge and heats them until they are red hot and malleable? |
The heater |
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In a riveting gang, what job presses the rivet into place and holds it there while the rivet head is formed on the other end by another member of the crew? |
Bucker up |
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In a riveting gang, what job catches the rivet in a catch can, knocks it against the steel work to remove scale and inserts it into its prepared hole? |
Catcher |
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Reinforcing ironworkers place and tie reinforcing steel in _______ and ______ and usually, steel _______ _______ are placed on the concrete to distribute the load. |
Footings and piers Base plates |
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When a building is exceptionally tall what is put on top of the foundation to achieve an even greater distribution of the load? |
Grillages |
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What are the members you will encounter most frequently during your iron working career? |
Columns, beams, girders, and trusses |
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What does the term "beam" describe? |
Most horizontal members except trusses and joists |
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What are the benefits of detailed and careful planning and scheduling in advance of a project? |
To eliminate unnecessary delays, rehandling of materials, and rework. |
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______ is the act of developing a sequence of events in order to accomplish part or all of a project. |
Planning |
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______ is the process of attaching times and dates to the events identified in the planning process |
Scheduling |
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What is a pick list? |
Establishes an order in which pieces will be hoisted |
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A lanyard attached to a full body harness must be securely anchored and capable of withstanding a _______ pound shock load. |
5000 pound shock load |
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In the construction industry the pressures in hydraulic tools reach or exceed _______ psi. |
10,000 |
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Instead of a finger or hand, what should be used to locate a hydraulic leak? |
Cardboard or wood |
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The standard impact wrench is generally used for all high-strength bolting and is powered by compressed air with a minimum pressure of _______ psi for 7/8" diameter bolts and smaller |
90 psi |
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Used to align 2 or more plies of steel, but not a "bull pin" |
Barrel- type drift pin |
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Used primarily to grip and lock objects |
Adjustable locking pliers |
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Used to align two plies of steel |
Bull pin |
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Identified by the color of the handles, they are used to make small, intricate cuts |
Cutting shears |
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Tapered for about half its length and has 5 flutes on the sides of the tool |
Tapered reamer bit |