Fab unit 1-4
A scriber can be used to punch holes in metal.*
no
A standing seam is never riveted, bolted, or button punched.*
no
Aviation snips can be used to cut wire and banding.*
no
Combination-blade snips are as strong as straight-blade snips.*
no
Draw bands can be used with spiral pipe.*
no
Forming puts all of the pieces together to form the completed fittings or duct. *
no
Left-handed aviation snips cut in a counter-clockwise direction and are marked "cuts-right".*
no
Like a saw, the file should always cut on the return stroke.*
no
Locks are seams that lock together using additional means, such as welding or riveting.*
no
One advantage of straight-blade snips is that curves are easy to cut because metal cannot roll over the top of the blade.*
no
One advantage of the Torx screwdriver is that it can be used to tighten any type of screw.*
no
Right-handed aviation snips are marked "cuts right".*
no
The ductwork on shop drawing is without detail and dimension.*
no
staging is another name of delivering
no
Elbow locks are used only _________________.*
on round pipe
TDC and TDF systems are __________________. *
patented duct connections
10. Always use a ___________________ to remove small pieces of metal that have not cleared the back of the machine.*
piece of metal
4. Never bend ____________________ in the brake.*
round stock
Another name for the shop ticket is the _______________.*
shop order
A coffin lock is _______________.*
soldered
The raised bead on a bead and crimp joint ________________.*
stiffens the pipe and provides a stop
A Vanstone edge is ______________. *
the 90 degree flange on duct with companion flanges
11. A squaring shear, also called a jump shear, is used to _________________.*
thin sheet metal
A clip is used ___________________.*
to hold sheet metal products in place
9. The bottom die is the __________________ or female die.*
v die
A Pittsburgh lock is a true lock because it has a 1/4" tail.*
yes
A ball peen hammer can be used for striking chisels and punches.*
yes
A lap seam can be spot-welded.*
yes
A portable band saw can be used to cut through strut.*
yes
A spin collar is formed on a special rollforming machine.*
yes
A water level can be used to maintain elevations while running ductwork.*
yes
Beaded and crimped joints are the most common joints for round pipe.*
yes
Channel lock pliers can be adjusted to different sizes.*
yes
Clips can be purchased or custom-made in the shop.*
yes
Coil-line systems are special systems that form rectangular ductwork from sheets of metal.*
yes
Formed edges are formed from the sheet metal itself.*
yes
Hems and edges are used mainly in architectural sheet-metal work and special projects.*
yes
In architectural shops, strip items (such as gutters and fascia) are often assembled in 20-foot or 30-foot lengths.*
yes
In the cutting position, the upper blade of left-handed aviation snips is on the cutter's left.*
yes
In the cutting position, the upper blade of the right hand aviation snips is on the cutter's right.*
yes
Lap seams are commonly used for roof flashing and gutters.*
yes
Marking gauges are used to mark notches or lap and seam allowances by scratching a line into the metal parallel to the edge.*
yes
Modifications on a coil line system that are not authorized by the factory - regardless of who performs them - may cause unsafe conditions. *
yes
Never position yourself between a stand of material and a piece of equipment.*
yes
One advantage of combination-blade snips is that the curved surface of the blade allows metal to flow over the blade, making it ideal for cutting curves.*
yes
Several methods can be used to join a seam.*
yes
Sheet metal is formed by following the marking made by the layout process.*
yes
Shop drawings are generated from design drawings.*
yes
Shoulder locks provide support for one piece of metal joined to another at right angles. *
yes
Side cutting pliers can be used to cut and strip wire.*
yes
Some of the tens steps in a typical shop's fabrication procedure might be combined in a small shop.*
yes
Standing seams are often staggered on ductwork.*
yes
Straight-blade snips are better for cutting a straight line than combination-blade snips.*
yes
The cutting and notching of fitting patterns is often done during the layout.*
yes
The shop ticket provides such information as the job number, sketch number, and identification number.*
yes
The shop tickets are used by shear operators to blank out the pieces needed for each item.*
yes
The typical workflow in a coil-line system is (a) shearing, (b) notching, (c) roll forming, (d) insulating, and (e) bending.*
yes
Unishears can be used to cut in any direction.*
yes
8. Brakes have about __________________ less capacity for stainless steel compared to their capacity for mild steel.*
50 percent
A coil-line system is one in which the shop tickets and cut lists are calculated by the computer when an operator feeds the data on each fitting or piece of duct into the system.*
no
When using a disk grinder, be sure to ___________________.*
Unplug when changing disks and always wear a face sheild
A disk grinder is used to direct sparks into the weld.*
no
The dimensions on the cut list include _________________.*
allowances for seams and connections
With the ________________ the capacity of the brake is reduced by 4 gauges.*
angle bar removed
Companion flanges are __________________.*
angle iron riveted or welded to duct
Knocked-down delivery costs less for transportation ________________.*
because more pieces can be loaded on the truck
6. __________________ is expressed as three or four numbers (such as 816 or 1016) and refers to mild steel.*
brake capacity
The coil line ________________.*
can cut notch and form duct
14. A __________________ can be used to form drive cleats after duct has been cut, notched, or formed. *
cleat bender
S and drives ___________________.*
connect transverse joints of ductwork
Dovetail seams are practical for ________________.*
connecting round pipe or a collar to flat matels
The first step in shop work is _________________.*
creating the shop drawing
13. A hydraulic brake uses an electric pump, hydraulic lines, fluid, and ______________ to operate the ram.*
cylinders
7. On a mechanical powered press brake, a __________________ sets the ram in motion.*
foot switch
5. When working on a(n) _____________________ by yourself, be sure no one is near the balance weight on the other end of the brake.*
hand brake
Keep cords and hoses away from ________________.*
heat oil and sharp edges
2. A box and pan brake can make ____________________ bends.*
inside and out
When using a power tool, the first thing to do is ______________.*
inspect it
When setting up or threading a coil line, you should always operate in ________________.*
jog mode
The blank produced from the cut list should be _________________.*
just big enough to make one part
15. The cutting blades of the shear are called ___________________.*
knives
Computerized cutting of sheet metal ____________________. *
lays out a series of patterns on a single sheet
3. A hand brake is used to bend ___________________. *
light gauge sheet metal
23. A flat seam is ________________.*
like a standing seam that has been bent flat
12. It is best to ___________________ the press brake when changing dies.*
lock out and tag out
The layout person ______________.*
marks the inside of each blank
A pattern strip _______________.*
marks the location of bend lines
A clinch lock is based on two folded edges hooked together.*
no
A riveting hammer has a flat face at right angles to its sides.*
no