Pd

Question 1

How can concial layout be described ?

Answer 1

Developing a pattern for a right using the apex and the fittings elevation to swing true lengths

Question 2

What does radial line development add in terms of cones?

Answer 2

Adds the use of plan view which allows for the development of frustums of cones

Question 3

What views does adding a plan view give you for cones ?

Answer 3

Top down view or bottom up view

Above elevation view then it’s a top down view and below elevation view is bottom up view

Question 4

What are some common uses for radial line pattern development?

Answer 4

Come on pitch commonly found in residential homes

Conical tees
Pipe tees on cones

Question 5

What are the points of a cone layout exercise ?

Answer 5

Intro to radial line development

Can be identified on elevation view of cone

By doing this u can transfer points from view to view

Question 6

When laying out a truncated cone what is important to do ?

Answer 6

Draw entire cone first then cut it off later

Question 7

Where do element lines always run ?

Answer 7

Base to apex or apex to base

Question 8

Are all element lines on the elevation view true lengths ?

Answer 8

No , they are foreshortened lines because they slope away from you. Element lines 1,7 are true lengths

Question 9

Would spinning the cone make other element lines true lengths ?

Answer 9

Yes

Question 10

What is the primary difference between conical and radial line development ?

Answer 10

Addition of the plan view

Question 11

Where is a cone on pitch fitting commonly found and used?

Answer 11

On a residential sloped roof

Question 12

A commercial conical tee ussally accompanies what other fitting ?

Answer 12

A reducer

Question 13

The true lengths for the cone on pitch miter line are transferred to where ?

Answer 13

The outside of the cones elevation view

Question 14

Where is a pipe tee on a cone used ?

Answer 14

A blowpipe system

Question 15

What is the difference between a tee on taper and a pipe tee on cone fitting ?

Answer 15

There is no difference

Question 16

Where is a tee on taper commonly used ?

Answer 16

A blowpipe system

Question 17

What is a residential concial tee fitting commonly called ?

Answer 17

Saddle

Question 18

The plate flashing for an adjustable roof flashing is developed using what type of layout ?

Answer 18

Parallel line layout

Question 19

When developing a pattern for a 90 degree conical tee how many views are required ?

Answer 19

Only 1

Question 20

When developing any conical tee that is not a 90 degree how many views are required ?

Answer 20

2

Question 21

Can you use the same method of layout for any degree of conical tee besides 90 degrees ?

Answer 21

Yes

Question 22

When developing a 90 degree conical tee is a side elevation necessary?

Answer 22

No

Question 23

What is the minimum pattern necessary for a conical 90?

Answer 23

1/4

Question 24

Does the verticle apex formula work to determine the apex of an oblique cone ?

Answer 24

No it does not

Question 25

What are element lines used for when developing oblique cones ?

Answer 25

Develop the views

Question 26

What are the true lengths lines used for when developing oblique cones?

Answer 26

The pattern

Question 27

When is a branch miter developed ?

Answer 27

When 2 or more oblique cones intersect creating a primary opening and multiple secondary openings

Question 28

Does a full pattern need to be created when developing a pattern for an oblique 3 way branch ?

Answer 28

No

Question 29

Is 1/12 spacing used to determine the stretch out length of an oblique cone ?

Answer 29

Yes

Question 30

Where is the refrence line placed on a pipe tee on cone ?

Answer 30

Anywhere along the right half of the elevation view

Question 31

What are the arcs and curves called on a pipe tee on cone ?

Answer 31

Sectional curves

Question 32

What are the sectional curves created called ?

Answer 32

Reducing radius curves

Question 33

What type of fittings can sectional curves be found in ?

Answer 33

45 degree fittings

Question 34

What is the minimum number of points needed to develop a sectional curve ?

Answer 34

3

Question 35

What view is developed from sectional curves?

Answer 35

Hole miter plan view

Question 36

The hole pattern for a 45 degree pipe tee on cone uses which method of layout ?

Answer 36

Radial line

Question 37

What must be developed on elevation view prior to creating the hole pattern stretch out ?

Answer 37

Developed mitre

Question 38

Should pd shortcuts be used when extreme accuracy is necessary ?

Answer 38

No they should not

Question 39

When could u use to rollation method ?

Answer 39

Square to round Round to round reducer

Question 40

When useing rollation do u add allowances after rolling?

Answer 40

Yes

Question 41

What is slipping the cheek shortcut?

Answer 41

Involves laying out the flat check or triangulating the check with the least amount of change and then using that check to develop the other check

Question 42

What are 3 ways u can determine the stepp off ?

Answer 42

Mathematically Tape measure Dividers

Question 43

How do you slip the pattern ?

Answer 43

Slip the flat cheek forward until it meets your new points created. Then trace the rest

Question 44

What should be used in a shop setting to correct irregular bumps ?

Answer 44

Trimulation

Question 45

What are the limits to calculating a miter on site ?

Answer 45

Length of offset should be at least 24” if the offset is less than 24” the mitre allowance will be to large to attach. If the offset is more than 6” an ogee should be orderd

Question 46

When is slipping the pattern commonly used ?

Answer 46

Transitional cheeks and offsets

Question 47

If u have an on center square to round using a framing square method what do you do ?

Answer 47

Trimulation

Question 48

What is another name for pipe tees on cones ?

Answer 48

Stub ys

Question 49

What system is a pipe tee on cone typically found in ?

Answer 49

Blowpipe system

Question 50

What angle is the typical pipe tee on cone?

Answer 50

30-45 degrees but 30 is preferred

Question 51

What are the distances from the opening of the stub to the points on the mitre line all considered ?

Answer 51

True lengths

Question 52

How do you get an apex on a cone ?

Answer 52

Extend lines of cone till they intersect the middle line

Question 53

What is rollation?

Answer 53

Developing a elevation view with plan views then bending up plan views and useing them to roll the pattern

Question 54

Where is the preferred location of the seam on a vertical pipe tee on cone ?

Answer 54

Short side of the stub

Question 55

Where do you draw your tee on cone mitre lines to ?

Answer 55

Yiur center point of the large plan view

Question 56

When your tee intersects the large plan view where do you extend the lines to ?

Answer 56

Go straight up from your intersection point till you reach the baseline

Question 57

Once you have yiur mitre lines on the baseline where do you extend them to ?

Answer 57

The apex

Question 58

How do u divide the strech out patterns ?

Answer 58

Using a sloped rule method to divide into 6 equal sections

Question 59

How do u pick your center line for your concial body pattern ?

Answer 59

Arbitrary

Question 60

How do you get true lengths of your cone ?

Answer 60

Project lines across the cone until they hit the other side

Question 61

How do you step off your center lines for pipe tees on cones ?

Answer 61

Point to point from your larger plan view

Question 62

How is the pipe tee stretch out determined ?

Answer 62

Parallel line

Question 63

Where are boot tees commonly found ?

Answer 63

Dust collection systems

Question 64

When is a boot tees used ?

Answer 64

Confined area installation where a 45 degree lateral tee cannot be used and a perpendicular branch must be run from the main duct

Question 65

What eases transition of airflow from the branch to the main ?

Answer 65

Angled gusset creates less friction than 90 degree bullhead

Question 67

When developing on center boot tees what is necessary?

Answer 67

Elevation and right side view

Question 68

Boot tees Commonly replace what type of fitting ?

Answer 68

45 degree tee

Question 69

What is the shape of an oblique cylinders cross section perpendicular to its centerline or axis ?

Answer 69

Elliptical

Question 70

What method is used to develop an oblique cylinders pattern ?

Answer 70

Line to line