Sheet Metal Shop 03 A

Front 1

List 3 types of measuring tools used on the shop

Back 1

Rules

Tapes

Specialty measuring devices

Front 2

To adjust the blanks and patterns for growth remove:

Back 2

1/16" per joint

Front 3

The net pattern lines are created on a blank that has cut to size by:

Back 3

Making the allowances

Front 4

What are 2 adjustments that needs to be checked when using a brake?

Back 4

A) the distance between the top leaf and the folding leaf.

B) the clamping pressure.

Front 5

When using the box-and-pan brake, the operator should always:

Back 5

Check the alignment of the fingers to ensure that they are straight.

Front 6

Over-bending of material in the brake is done to compensate for:

Back 6

Spring-back

Front 7

The allowances on the curved cheeks will normally be:

Back 7

3/16"

Front 8

Cheeks with straight sides may have the male Pittsburg allowance of:

Back 8

1/4"

Front 9

To properly notch the allowance of a runner that will be broken, the notch should be:

Back 9

To the net pattern line.

Front 10

On a slip roll forming machine, the roll that is set to form the amount of curve is the:

Back 10

Rear Roll

Front 11

Y branches and larger fittings may require a:

Back 11

2 piece heel.

Front 12

When folding 1/2" fold on a fitting to accept the drive cleat _____ ____ may not be used.

Back 12

Cheek bender.

Front 13

To prevent damage to the folding leaf when forming a hamerlock, it is necessary to relieve the material used for the ______ of the Pittsburgh lock.

Back 13

Pocket

Front 14

List 4 advantages that the proprietary duct connection offers over a standing drive connection.

Back 14

*Fabrication of fittings and ductwork is simplified

*Net patterns only are required on the duct joint ends.

*The joint provides more rigidity

*The joint makes better seal.

Front 15

Before attempting to assemble the Pittsburgh lock, it is important to ensure that:

Back 15

The female side of the lock is open and loose enough to accept the male.

Front 16

Tacking a Pittsburgh seam refers to:

Back 16

Folding the flange over at intervals.

Front 17

If the Pittsburgh lock seam is forced all the way close in one pass, it will save time and look neater. T/F

Back 17

False. It will make wrinkles and have room for air to move.

Front 18

When assembling a slip-and-drive joint, the drive cleat goes on the:

Back 18

Vertical side of the fitting.

Front 19

When bending over the hammerlock flange, the flange should be_____ by placing the project on a bench.

Back 19

Backed-up

Front 20

Flexible duct connection is used for :

Back 20

Isolate HVAC equipment from ductwork .

Front 21

What is the maximum length of a fire damper sleeve with breakaway connections?

Back 21

Fire separation wall + 6" on both sides.

Front 22

Fire damper may be adjusted or modified to fit odd sized ductwork

Back 22

Not at all. They are ULC rated.

Front 23

If fire damper sleeve is required for 8" ×8" ductline, what size does the fire damper needs to be?

Back 23

8"×8"