Pattern Development Flashcards
____ ____ are the foundation of parallel line development.
Element lines.
To properly develop a parallel line development pattern, you must have the true length of the:
Element line.
Primes in parallel line pattern development are names used to identify an ____ ____ ____
Extra element point.
An object not developed with simple parallel line development is a:
Boot tree.
True or false: You can develop patterns for spherical objects with the parallel line development.
True; Parallel line development can be used to develop patterns for dome shaped objects.
True or false: Parallel line development uses the same steps for any object developed with this method
False; More complicated objects may require you to add different steps to your parallel line method, but the basic principles remain the same.
The ___ of the ___ is found in the plan view.
The perimeter of the pater is found in the plan view.
Element line spacing on the stretchout is best developed by:
Calculating and measuring.
To see what the actual base plate would look like, you could develop a:
Auxiliary view.
A ____ adjustable elbow can be twisted to form any angle from ____.
90 degree, any angle from 0 degree to 90 degree.
Adjustable elbows that are manufactured for commercial applications are typically made from either ____ or sections otherwise referred to as ____.
5 or 7 pieces, gores.
Round offsets are required when the pipe must ____ either horizontally or vertically.
Bypass a permanent obstruction.
The ____ is the line where two gores of the round elbow meet at an angle.
Miter line.
What is the formula used to calculate the miter angle?
Miter angle = Degree of the elbow divided by (2x number of pieces -2)
What is the formula used to calculate the stretch out for pipe?
3.14 x diameter = Stretchout
What are the two methods used to draw the miter line for a round elbow?
Basic geometry and a protractor.
The plan view can be drawn either a ____.
Full plan view or half plan view.
When calculating the miter line of a round offset, there are four possible methods which can be used depending on which criteria applies. State the four different possibilities.
1) with the throat given
2) with the centerline given
3) with the heal given
4) bisecting the centerline
The development of a round offset is similar to that of a ____.
3 piece elbow.
When the throat height is given when creating the miter line for a round offset, the arc will be drawn from ____.
The throat.
What is the allowance for an elbow seam?
1/8”
Using a ____ connects the points with curves to complete the first gore.
Flexible curve.
What is the small end allowance?
7 x the material thickness.
What is the allowance for a grooved seam?
3 x the grooved seam.
