Pipe Drafting - Sizes and End PrepPipe Drafting - FittingsPipe Drafting - FittingsPipe Drafting - 1- and 2-Line SymbolsPipe Drafting - Isometric CuesPipe Drafting - Pipe Detail DimensioningPipe Drafting - Fabrication TolerancesPipe Drafting - Spool Dimensioning

Someone with these skills can:

Explain the NPS and DN Pipe Size Systems
Explain the ANSI B36.10 pipe schedules and
the data available there
Explain how Mil Tolerance can affect wall
thickness as delivered
Define the common pipe end preparations
and surface finishes
Someone with these skills can:

Name the common fittings used in pipe
Match 1- and 2-line layout symbols for pipe
fittings and valves in their flanged, butt
welded and socket welded applications
Identify fittings and valves on a plan or
elevation route
Define the main tolerances on butt welded
flanges per ASME B16.9
Someone with these skills can:

Compare and Contrast the Major
Flange Attachment and Facing Types
Explain how pipe spacing in racks is
affected by flanges
Explain the role of Gaskets and Bolts in
Someone with these skills can:

Identify correct single line and double line
symbols for pipe joined by welding, flange,
screwed connections
Explain the conventions for:
Approximating ell curve with right angle
Stab-in (Stub-in) and Olet branches
Open Pipe symbol
Flanged pipe in projections
1-line symbols for insulation, etc.
Someone with these skills can:

Explain the use of Isometric cues to convey
pipe route direction and dimensions
Explain the relationship to Isometric drawings
to true Orthographic views
Explain the orientation of planar components
and planar symbols in Isometric planes
Someone with these skills can:

Explain the use of witness lines in the plane
showing true size
Explain the indication of component
orientation and alignment using, for example:
Representative Bolt Holes
Hatched angles
Explain the pipe offset calculation for
changes in Top of Steel Elevation
Explain the concept of Working Point Dimensioning
Someone with these skills can:

Explain the sources of errors in fabrication
Explain the tolerances placed on elbow fit-up
Explain the corrective effect of:
Centerline Intersection Dimensioning for Spools
Reference Dimensioning for Equipment
Field Fit-up Welds
Someone with these skills can:

Explain the PFI ES-44 dimensioning and
callout conventions for pipe spools
Identify the most common component
dimensioning reference points
Explain the use of minimum straight lengths
for bends