Joints And Seam

Question 1

The minimum recommended edge distance for fasteners is ________the fasteners diameter.

Answer 1

Two times

Question 2

Is a common, easy to fabricate and simple to assemble seam?

Answer 2

Lap seam

Question 3

_________ refers to the distance between the edge of the material and the centerline of the fastener that will be used to secure the seam?

Answer 3

Edge distance

Question 4

The distance between the fasteners is referred to as?

Answer 4

Fastener pitch or simply pitch

Question 5

Has the lap allowance offsets slighthly and is designed to produce a joint that is flat on one side?

Answer 5

Offset lap

Question 6

On a round elbow or offset gore section, the offset is created in a?

Answer 6

Burring machine

Question 7

Two pieces of metal folded over, hooked together and is an offset form to lock the seam and keep it from coming apart. Most often used on round products?

Answer 7

Grooved seam (3W)

Question 8

Two types of corner lap seams?

Answer 8

Outside corner lap (heavier gauge)
Inside corner lap (lighter gauge)

Question 9

A simple way use to secure the lap seam?

Answer 9

Spot weld

Question 10

Means of fastening a lap seam in a more permanent manner?

Answer 10

Rivets

Question 11

Breaks and falls free in pop rivet

Answer 11

Mandrel

Question 12

The most common solid rivet in sheet metal is known as? Requires acces to both sides.

Answer 12

Tinners rivet

Question 13

A common machine used to form the hooks for the grooved seam?

Answer 13

Barfolder

Question 14

Tool used to offset the grooved seam

Answer 14

Hand groover

Question 15

Used to form the grooved seam to the inside of an object?

Answer 15

Grooving stake

Question 16

Is a machine designed to form grooved seams in one operation, inside and outside groove seams?

Answer 16

Noyes Groover

Question 17

Flanged connection seams also known as?

Answer 17

Tapins

Question 18

Normally a field fabricated seam, used in place of a hammerlock?

Answer 18

Dovetail (1W)

Question 19

Is the most commonly used seam in the sheet metal trade?

Answer 19

Pittsburgh lock

Question 20

Pittsburgh lock consist of two parts:

Answer 20

Female pocket and male hook

Question 21

Female pocket allowance will always be 3/8 deep? True or false

Answer 21

True

Question 22

A throatless rotary machine with bed mounted 45° to the rolls?

Answer 22

Easy edger

Question 23

Is designed to fold an edge on the inside throat of a square throat elbow?

Answer 23

Cheek bender

Question 24

Should be used to create the hook on the straight insides of cheeks or on the ducts?

Answer 24

Brakes and barfolders

Question 25

Lock used on rectangular duct for a lighter gauge and lower pressure classes of duct construction?

Answer 25

Button lock

Question 26

Machine used to form a stop on a round hammerlock?

Answer 26

Elbow rolls or rolling rules

Question 27

Used to crimp materials in round pipe?

Answer 27

Crimping rolls