Conical Tees

Question 1

Where is a conical tee on round pipe typically found?

Answer 1

Commercial HVAC

Question 2

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

Answer 2

No

Question 3

When developing a 30 degree conical tee fitting, is a side elevation view necessary?

Answer 3

Yes

Question 4

What pattern is necessary to develop a 90 degree conical tee fitting?

Answer 4

1/4 pattern

Question 5

Can the vertical apex formula be used in developing a 60 degree conical tee fitting?

Answer 5

Yes

Question 6

What is the formula for calculating the vertical apex?

Answer 6

VA = VH x LD
______
LD - SD

Question 7

What is the VA when the LD = 4”, the SD = 2 1/2”, and the VH = 12”?

Answer 7

32”

Question 8

How many views are required when developing a 90 degree conical tee?

Answer 8

One

Question 9

How many views are required when developing any conical tee that is not 90 degrees?

Answer 9

Two

Question 10

What purpose does the half plan view serve in developing a conical tee?

Answer 10

It serves to simplify and unclutter the end view and can be developed at any distance below the centre line of the end views round opening.

Question 11

What is usually best to do when laying out the large diameter?

Answer 11

It is usually best to keep it within the main cylinder to avoid clutter.

Question 12

What is necessary to transfer the points on the mitre line to the outside edge of the cone?

Answer 12

The transfer must be done perpendicular to the centre line of the conical stub.