simple layout

Question 1

1. Patterns drawn straight onto the metal is known as simple pattern development ? true or false

Answer 1

true

Question 2

Patterns are developed straight onto the proper cut size of metal with openings and allowances? true or false

Answer 2

true

Question 3

True lengths of the surface are drawn on

Answer 3

plan and elevation views

Question 4

4. Round elbows are examples of parallel development

Answer 4

true

Question 5

All sides that meet at an apex or common point are

Answer 5

radial line development

Question 6

6. Triangulation is used when patterns are irregular shaped object ( square to round and offset 90 are examples )

Answer 6

true

Question 7

7. Rollation developement is a example of a short cut method of pattern developement

Answer 7

true

Question 8

When speed is a factor its fast and easy to make , funnels and round reducers are examples

Answer 8

rollation developement

Question 9

9. When you start a layout you only require the finish dimensions

Answer 9

true

Question 10

Three measurements are required for rectangle pattern

Answer 10

width ,depth , length

Question 11

two measurements are needed for round patterns

Answer 11

diameter and lenght

Question 12

18. Duct connections vary from each shop

Answer 12

true

Question 13

18. Duct connections vary from each shop

Answer 13

true

Question 14

20. S- cleat is “1” and the drive is “1 1/8”

Answer 14

true

Question 15

21. Slip and drive require 1/2 allowance to be added and standing drive(cp) requires two allowances

Answer 15

true

Question 16

22. Hammer lock ( tap in ) requires three allowances

Answer 16

true

Question 17

Butt seam is usually heavier gauge and mostly

Answer 17

welded

Question 18

Lap seams depend on whats going to fasten them together

Answer 18

( spot welded or rivets )

Question 19

25. Pitsburgelock is the most common lock used in the trade 1/4 male on straight 3/16 on a radius and female of “1

Answer 19

true

Question 20

26. Pitsburgelock is usually on the short part of the duct

Answer 20

true

Question 21

Button lock is used on lighter material for

Answer 21

round and rectangular duct

Question 22

28. Acme lock is a double hook with a offset

Answer 22

true

Question 23

When adding duct connections

Answer 23

add 1/2 for the slip and drive from the finish line on the shorter side of the fitting