Blueprints Review Flashcards
T or F: When looking at a print that contains scaled dimensions and written dimensions, the scaled dimensions should always be used.
False
T or F: The ruler is a hand-held device used to layout repetitive distances on prints.
False
T or F: Standard practice should be used when installing a device in a wall when the mounting height is not listed on the print or in the job specifications.
True
T or F: NICET is the responsible organization for standardization of symbols.
False
Multiple Choice:
Symbols are used on blueprints for which of the following reasons:
a. standardize notations d. simplify
b. update e. revise
c. save space f. clarify
A, C, D and F
Which of the following are reasons for the use of symbols on prints?
a. easier to read c. standardize notation
b. save space d. simplify notation
B, C and D
Which scale is based on tenths or hundredths of an inch?
decimal
Which scale uses the 1/2 or 1/4 size concept?
mechanical
Which scale most often used for large plot plans has a scale like 1” = 50’?
civl
Which scale that is often the most common on prints used in the building trades has a scale like 1/4” or 1/8” = 1’?
architect
The distance an object is from a known ____ point on a print is defined by the location dimensions.
a. feature c. starting
b. reference d. base
B - reference
The hand-held device used to draw circles is the ______.
compass
The hand-held instrument used to layout irregular angles is the ______.
protractor
The print that shows the location of the structure relative to the lot, road, or to other structures is the ______.
site plan
Match:
a. Lists current, voltage, and load information for circuits and circuit breakers.
b. Lists lighting or motor control information by room, circuit designation, and contractor or connections.
c. Includes information relating to window and door size, shape, material, and ordering information.
d. Used to determine the voltage, current and power requirements for motors and other electrical equipment as well as wire sizes and run information for the various machinery.
e. Gives pertinent information regarding walls, ceilings, and floors for each room.
\_\_\_\_\_ panel schedule \_\_\_\_\_ room schedule \_\_\_\_\_ window and door schedule \_\_\_\_\_ control schedule \_\_\_\_\_ equipment schedule
A panel schedule E room schedule C window and door schedule B control schedule D equipment schedule
What is a legend used for on a blueprint?
Used to define or explain a symbol.
Who are the only three people who can make or “OK” changes to a job specification?
architect, engineer, owner
What is the difference between an isometric and oblique projection?
Isometric: all angles are 120 degrees and are 30 degrees off horizon.
Oblique: similar, but front view is parallel to main surface.
Where can a person find what a print symbol means that is unknown?
AWSI book
When print changes are made by an architect or engineer, what should be done?
move new prints, dump old
What is the general purpose of notes that relate to blueprint reading?
more detail
Describe the function of object lines.
boundaries
Describe the function of a cutting plane line.
indicates where drawing cut for section view
Describe the function of extension and dimension lines.
extension: extend feature to be dimensioned
dimension: dots or slashes which connect the extension lines
Describe the function of the riser diagram
shows relationship of electrical distribution system
What computer program is used for most drawings in our industry and why?
CAD - allows for easy changes, accurate, uniformity
Define job specifications
detailed job requirements
Define Addendum
Change to prints or specs before bids open
Define Revision
dated change to blueprints or specs
Define Change Order
Change relating to a construction project that occurs after bids open.
Define As-Built
Set of drawings that indicates exactly how the job was completed.
Define legend notation: MC
Main cross connect
Define legend notation: ER
Equipment Room
Define legend notation: TC
Telephone closets
Define legend notation: WA
Work areas
Define legend notation: S
Station equipment
Define legend notation: EF
Entrance facilities
Define legend notation: IC
Intermediate cross-connects
Define legend notation: X
Cross-connect
EOL
End of line
What is the function of auxiliary views?
View of an object looking from an angle to show the actual size of a surface.
What is the function of a section view?
Scaled drawing created to a larger scale to provide additional information.
What is the function of isometric pictorial views?
3-D view to help understand
What is the function of a perspective view?
Pictoral view of an object showing three views simultaneously that is drawn as the human eye would view.
List the three most common types of prints and identify which is the most commonly used by the electrician.
- Site plan
- Floor plan (use mostly by electrician)
- Elevation
Essay: When you cannot find the mounting height for a piece of equipment on the prints or in the job specification, what should you do?
When in doubt, fall back to the shop standard.
