PD TQ Prep Flashcards
What step differentiates conical layout from radial line development?
Both use a vertical apex and elevation view but radial adds the use of a plan view
When is a branch mitre developed?
Two or more oblique cones intersect, creating one primary opening and multiple secondary openings
Is a full pattern necessary when developing a pattern for an oblique three-way?
False
Is it necessary to create a plan view when developing an oblique three-way Y Branch?
True
What is an apex in plan view B used to accomplish?
Swing true length lines
Which pipe tee on cone fitting is most preferred on a dust collection system?
30 degree
What other application is the preferred pipe tee on cone fitting used?
Commercial air handling
Where is a conical tee on round pipe typically found?
Commercial HVAC
Is a side elevation view necessary when developing a 90° conical tee fitting?
No
Is a side elevation view necessary when developing a 30° conical tee fitting?
Yes
What size of pattern is necessary to develop a 90° conical tee fitting?
¼ view
Where are boot tees commonly found?
Dust collection systems
What application is a tee on taper commonly used in?
Blow pipe system
What other fitting usually accompanies a commercial conical tee?
Reducer
Where can sectional curves be found?
45° fitting
What is the minimum number of points needed to develop sectional curves?
3
What view is developed from the sectional curves?
Hole miter plan view
What must be developed on the elevation view prior to creating the hole pattern stretchout?
The developed miter
What method is used to develop the hole pattern for a 45° pipe tee on cone?
Radial line development
What is a residential conical tee fitting commonly called?
Saddle takeoff
What type of fitting do boot tees commonly replace?
45° Tee
What is the shape of the mitred end of a right cylinder?
Elliptical
What method is used to develop an oblique cylinder pattern?
Line to line
The oblique cylinder ½ pattern curved stretch out equals ½ the cylinder’s mitred _____?
Circumference
What method is used to develop the pipe tee stretch out?
Parallel line development
What does the plan view in radial line help to develop?
Frustums of cones, cone intersections and point locations
What is used to measure the stretch out when developing the full pattern stretch out for a cone?
Pee wee tape