simple Layout (110102c)

Question 1

What are five common layout types in PD?

Answer 1

Simple layout
Parallel line development
radial line development
Triangulation and rollational development

Question 2

what is simple layout defined as?

Answer 2

Patterns that are drawn onto metal with no use of orthographic views other development patterns

Question 3

What is parallel line development defined as?

Answer 3

patterns that use a number of straight and parallel lines to create a pattern

Question 3

what is triangulation defined as?

Answer 3

used to develop un common irregular objects by drawing and then dividing the pattern into triangles

Question 3

Radial line development is defined as?

Answer 3

Objects that have a main apex point that the pattern is then developed from

Question 4

what is Rollational development?

Answer 4

this is the use of a pattern that has been created and is simply rolled onto the new metal sheet

Question 5

What is Stretchout?

Answer 5

the distance around the duct ( perimeter)

Question 6

What is the formula that we use for calculating the stretch out? (Perimeter)

Answer 6

2(Width) plus 2(Diameter)

Question 7

How are brake lines marked?

Answer 7

With a capital X and then marked up or down with the desired angle

Question 8

What two sizes are required before laying out a piece of pipe?

Answer 8

Diameter of the pipe
Length of the pipe

Question 9

what is the formula for pipe Stretchout?

Answer 9

(3.14)x(Diameter of pipe) = Stretchout

Question 10

How can raw edge connection be fastened?

Answer 10

by welding the seam

Question 11

How wide is a slip cleat or s cleat?

Answer 11

1”

Question 12

how wide is a Drive cleat?

Answer 12

1 1/8” or 1.125”

Question 13

what are the S+D allowances?

Answer 13

1/2” on square and rectangle 1(w)
1” on round and radius fittings 2(w)

Question 14

What is another name for Hammerlock seam?

Answer 14

Tap-in

Question 15

What is the allowance for a hammerlock?

Answer 15

commonly we use a 3/4” allowance
3(W) depending on the size of the application

Question 16

What are the Pittsburgh allowances for female and male?

Answer 16

Female 15/16” at SAIT or Commonly 1”
Male 1/4” for straight fittings 3/16” for curved - Radius fittings

Question 17

Were are the female Pittsburgher seam placed?

Answer 17

on the short side of the fitting

Question 18

when do we develop a gross pattern?

Answer 18

When we have to add allowances to the net pattern

Question 19

what angle do we notch at?

Answer 19

30 degree

Question 20

What is a standing drive connection also known as?

Answer 20

CP connection

Question 21

what is needed on slip and drive connections?

Answer 21

proper allowances and proper notching