Course No. 10
Pipe Fitting – Simple and Rolling Offsets
Section A (6 hours) : Use of the “invisible box” method of showing simple offset dimensions on isometric single-line piping drawings. Standard pipe fitting handbook tables to find the set, run, and travel measurements for the common offset fitting angles. Calculation of cut lengths of pipe to make simple offsets using screwed, flanged, and welding fittings. Section B (9 hours) : Use of the “invisible box” method of showing rolling offset dimensions on single-line piping drawings. Pipe fitting handbook tables and the “steel square” to calculate and lay out the set, run, roll, and travel measurements using the common angular fittings. Calculation of cut lengths of pipe to make common rolling offsets from screwed, flanged, and welding fittings. Section C (5 hours) : Several practice problems using two-pipe equal-spread offsets and offsets around common field obstructions. Simple pipe fitting handbook formulas are used in the solution of practical field problems using simple offsets.
Prerequisites: The ability to use whole numbers, fractions, and decimals, read simple single line piping drawings, and use pipefitting handbook tables.