00105-15 Construction Drawings

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section drawing

A cross-sectional view that shows the inside of an object or building

hidden line

A dashed line on a plan showing an object obstructed from view by another object.

computer-aided drafting (CAD)

Almost all construction drawings today are made by this...

floor plan

Also called a plan view, this is an aerial view of the layout of each room.

isometric drawing

Also known as a pictorial illustration, this lets you see an object as it really is, rather than as a flat, two-dimensional view.

electrical plans

Engineered drawings for electrical supply and distribution, include locations of the electric meter, switchgear, and convenience outlets.

leader

In drafting, an arrowhead is placed on this in order to identify a component.

plumbing

Refers to both water supply and all liquid waste disposal

roof plan

Shows the shape of the roof and the materials that will be used to finish it.

beam

Sturctural plans may show this large, horizontal support made of concrete, steel, stone, or wood.

fire protection plan

The drawing that makes up a building's piping, valves, and switches.

blueprints

The traditional name for construction drawings.

piping and instrumentation drawings (P&IDs)

These are schematic drawings which show all the equipment, piplines, valves, instruments, and controls needed to operate a piping system.

title block

This is part of the construction drawing and gives information about the structure and is numbered for easy filing.

foundation plan

This is part of the structural plans and shows the lowest level of the building.

not to scale (NTS)

This means that the drawing gives approximate positions and sizes.

scale

This part of a drawing tells the size of the object drawn compared with the actual size of the object represented.

heating, ventilating, and air conditioning (HVAC)

This plan includes the piping system plans for gas, oil, or steam heat.

plumbing plans

This shows the layout for the plumbing system that supplies hot and cold water, for the sewage disposal system, and for the location of plumbing features.

dimensions

To do accurate work, you must know how these measure to the exterior or the interior of the object

structural plans

Used to support the architectural design, include the general notes, a foundation plan, a roof framing plan, and structural section drawings.

Specifications

Written statements provided by the architectural and engineering firm to define the quality of work to be done and to describe the materials to be used.

schematic

a one-loine drawing showing the flow path for electrical circuitry.

architect

a qualified licensed person who creates and designs drawings for a construction project

elevation drawing

a side view that shows height

engineer

applies scientific principles in design and construction

detail drawings

are enlarged views of some special features of a building, such as floors and walls.

legend

defines the symbols used in architectural plans

mechanical plans

engineered plans for motors, pumps, piping systems, and piping equipment.

architectural plans

show the design of the project, including many parts, such as the floor plan, roof plan, elevation drawings, and section drawings.

civil plans

show the location of the building from an aerial view, as well as the natural contours of the earth.

contour lines

solid or dashed lines showing the elevation of the earth on a civil drawing

symbols

these may be used on a drawing to tell what material is required for that part of the project - architectural, civil, structural, mechanical, & plumbing

elevation

this refers to the height above sea level or other defined surface

construction drawings

together with the set of specifications, detal what is to be built and what materials are used.

dimension line

usually has an arrowhead at both ends with the measurement written near the middle of the line.