Construction and Electrical Drawings Quiz
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Questions and Answers

What do most symbol lists include?

  • Symbols for international projects
  • Only those symbols applicable to the particular project
  • All possible electrical symbols
  • Symbols for both electrical and mechanical systems (correct)

What does the abbreviation AFF mean?

  • Above finished floor (correct)
  • After final finish
  • As found formerly
  • Attach front first

When used as a grounding electrode, a ground ring must be at least how long?

  • 20' (6.0 m) long (correct)
  • 5' (1.5 m) long
  • 15' (4.5 m) long
  • 10' (3.0 m) long

When a screw is used as a main bonding jumper, it must be colored?

<p>Green (B)</p> Signup and view all the answers

What material must the main bonding jumper (MBJ) be made of?

<p>Copper or other corrosion-resistant material (D)</p> Signup and view all the answers

What information is typically found in the title block of a construction drawing?

<p>All of the above (D)</p> Signup and view all the answers

Where is the legend block typically located on a construction drawing?

<p>Lower right corner (C)</p> Signup and view all the answers

Which block on a drawing contains the initials of the drafter, design supervisor, owner, and architect?

<p>Title block (D)</p> Signup and view all the answers

What is the purpose of contour lines on a site plan?

<p>To indicate the slope of the property (A)</p> Signup and view all the answers

Which of the following is a primary advantage of using an architect’s scale over an engineer’s scale in construction drawings?

<p>Architect’s scales are easier to use for detailed architectural drawings (C)</p> Signup and view all the answers

Why is having 12 different scales on a triangular architect’s scale beneficial?

<p>It provides versatility for different types of projects and scales (D)</p> Signup and view all the answers

What is the purpose of a key plan in electrical drawings?

<p>To identify the part of a project to which the sheet applies (B)</p> Signup and view all the answers

Which of the following symbols indicates a range receptacle?

<p>A rectangle with a line through it (A)</p> Signup and view all the answers

Flashcards

Title Block Information

The title block on a construction drawing contains essential information like project name, location, and possibly the owner.

Legend Block Location

The legend block, containing symbols and their meanings, is typically found in the lower right corner of a construction drawing.

Drawing Approval Block

The approval block contains the initials of individuals involved in the project, like drafters, supervisors, owner, and architects.

Contour Lines on Site Plan

Contour lines on a site plan represent the slope and elevation of the property.

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Architect's Scale Advantage

Architect's scales offer versatility for detailed architectural drawings by providing various scales on one tool.

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Key Plan's Purpose(Electrical)

A key plan in electrical drawings identifies the scope of a specific electrical project sheet.

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Range Receptacle Symbol

A specific symbol on an electrical drawing indicates an outlet for appliances.

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Number of Architect's Scale Benefits

Multiple scales on architect's triangles offer quick conversions for various projects.

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Ground Ring Length

When used as a grounding electrode, a ground ring must be at least 10 feet (3.0 meters) long.

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MBJ Material

The main bonding jumper (MBJ) must be made of copper or other corrosion-resistant material.

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Screw as MBJ Color

When a screw is used as a main bonding jumper, it must be colored green.

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AFF Meaning

AFF stands for "after final finish."

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Symbol List Content

Symbol lists usually include all possible electrical symbols, not just project-specific ones.

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Study Notes

Construction Drawings

  • Title block typically includes project name, location, and owner.
  • Legend block usually located near the title block.
  • Initials of drafter, design supervisor, owner, and architect are in the title block.
  • Contour lines on site plans indicate property slope.
  • Architect's scales are advantageous for detailed architectural drawings.
  • Architect's scales can be more accurate for larger projects.
  • Architect scales typically have 12 different scales which is advantageous for different projects and scales.
  • 12 different scales on a triangular architect's scale allows for versatility and different scales for different projects.

Electrical Drawings

  • Key plan identifies the part of a project to which the sheet applies.
  • A circle with a single line crossing it indicates a range receptacle.
  • Symbol lists include symbols for a particular project (not all possible ones).
  • AFF stands for above finished floor.
  • Ground ring must be at least 5' (1.5 m) long for grounding electrode use.
  • A main bonding jumper (MBJ) must be made of copper or other corrosion resistant metal.
  • Purpose of bonding jumpers is to connect to the service equipment to the utility supply.

Drawing Number Block

  • Drawing numbers are typically located within a box in the architect's title block.
  • Formatted as a letter and a dash (or two letters) followed by one to three numbers.
  • First letter indicates the discipline.
  • Second letter (if used) indicates subdivisions within discipline.
  • First number usually relates to the sheet type/floor number of building.
  • Subsequent numbers are usually sequential, sometimes skipped; allows changes or additions later.

Title Block (2 of 3)

  • Title block is usually located in the lower right corner of the sheet.
  • Information typically includes project name, location, owner, architect's firm, and job number.
  • Includes the scale of the drawing and sheet number.

Scale Drawings

  • To use a scale drawing, note the dimension on the drawing and convert it to the value of the scale.
  • For example, if a drawing shows a scale of 1/2" = 1'-0", this means that every inch on the drawing represents two feet, so a drawing distance of 3" represents an actual dimension of 6'.
  • Architect's scale has special markings and multiple scales to simplify drawing dimensions.
  • A one-inch architect's scale can have a scale of 1" = 1'.
  • Flat and triangular architect's scales are available.
  • Triangular architect's scales can be marked with 12 different scales on each edge.

Load Center Sizing

  • Each ungrounded conductor must have overcurrent protection (fuses or circuit breakers).
  • Fuses and circuit breakers protect conductors and equipment.
  • Ground fault circuit interrupters (GFCIs) protect people.
  • A two-pole GFCI monitors the balance between two hot conductors and the neutral conductor.
  • Any imbalance above 4mA will trip the device.

Grounding Electrode Installations

  • Rod, pipe, and plate electrodes must be buried below the permanent moisture level.
  • Free of nonconductive coatings (paint, enamel).
  • Pipe can be driven at an angle if necessary to reach the required depth.
  • Minimum depth is 8 feet vertically.

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Description

Test your knowledge on construction and electrical drawings, including key elements such as title blocks, architect's scales, and electrical symbols. This quiz covers essential topics for anyone involved in architecture or engineering. Challenge yourself and see how well you understand these crucial drawing components.

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