Frequent question: Why are symbols used in construction drawings?

Graphic symbols are used in construction drawings as a pictorial shorthand to reduce drawing time and coordinate separate drawings. For example, symbols can be used on a floor-plan drawing to indicate placement and type of specific equipment such as electrical outlets and wall light switches (Figure 5-18).

Why are symbols important in floor plans?

Using the appropriate symbols for the living space, including symbols for doors, windows, cabinets, appliances, and plumbing fixtures; and those more closely associated with the construction of the structure, including electrical circuits, material description and sizing, and proper dimensioning, provides for the …

What are the GD&T symbols?

GD&T Symbols

  • True Position. Position is one of the most useful and most complex of all the symbols in GD&T. …
  • Regardless of Feature Size. …
  • Least Material Condition (LMC) …
  • Maximum Material Condition (MMC) …
  • Datums in GD&T. …
  • Perpendicularity. …
  • Total Runout. …
  • Flatness.

What are pictorial symbols?

The expression or illustration regarding the different information about any object or objects or activities through pictures or picture symbols is called pictorial representation or pictograph.

What is the name of this symbol @?

The at sign, @, is normally read aloud as “at”; it is also commonly called the at symbol, commercial at or address sign.

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What does T in a circle mean on floor plans?

Electrical Symbols



A small circle bisected by two parallel lines is a wall outlet, while a circle superimposed over an X is a ceiling light and a T hanging from a circle is a thermostat.

What does C stand for on a floor plan?

House plan abbreviations

ABBREVIATION MEANING
C Cooker
CAB Cabinet
CBD / CPD Cupboard
CD Clothes dryer

What does a triangle mean on a drawing?

RE: Drafting symbol



We use triangles to designate flag notes.

What are alphabet lines?

The lines in the Alphabet of Lines are used to describe shape, size, hidden surfaces, interior detail, and alternate positions of parts. Each conveys a particular meaning on the drawing.

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