Level 3 Sheet Metal HW Questions
with Correct Verified Answers 2026-
2027. Graded A
1 pound lol - ANSHow much does one pound of
Standard Air Weigh?
1:1 - ANSThe best duct for airflow is one with an aspect ratio of
1:1 - ANSWhich duct aspect ratio presents the least
inside surface to the airflow?
1.5 - ANSWhat is the minimum hour rating for a fire damper that is installed
in a 2-hour rated wall?
1.5' - ANSHow far from the edge of the duct or joint should an access door
be located?
1.5/3 - ANSWhat are the two different hour ratings of fire dampers?
1.5x material thickness - ANSWhat is the minimum setback for the nose
bar when bending stainless in the
handbrake?
1
,1.5x1.5 - 16ga - ANSWhat is the minimum size and gage for retaining
angles?
1" - ANSHow much of the structure minimum do retaining angles need to
cover?
1" Spacers - ANSWhat should be done to a backsplash where it contacts
the wall?
1" thick min 22Ga c/w 1" mineral wool and non-combustible spacers -
ANSDescribe a clearance reduction panel that can reduce the clearance to
combustibles to 3"
1/4" rivets, #10 screws, 1/4" bolts on 8" center - ANSList four ways to
attach the retaining angles to the damper sleeve.
10 - ANSWhat is the best welding lens number to use for SMAW?
10' - ANSWhat is the minimum distance from a property line that an
exhaust fan may discharge?
10' - ANSWhat is the minimum distance from an outside air intake that a
grease duct exhaust fan may be
located?
100 BTU/LBS=Change in temp - ANSWhat would be the resulting
temperature if 4000 Btu are added to 100 lbs of water at
2
, 60°F?
100% argon - ANSWhat is a common shielding gas for GTAW stainless?
100% Argon - brown tank - ANSWhat gas is most commonly used to
GTAW stainless steel?
100% tin - ANSWhat type of solder is recommended for food service
items?
11 - ANSWhat division of the specifications is to be referenced for food
service equipment?
12.5" (1/4" per foot) - ANSWhat is the total required slope in inches of a
horizontal run of duct that is 50 feet in length?
12' - ANSWhat is the maximum interval spacing between access doors in
grease ducting?
12x10 - ANSA rectangular duct must deliver 700 CFM at
0.1 " w.g per 100 ft. The best rectangular duct size
is:
13.33 - ANS. How many cubic feet of standard air is
required to make one pound of air.
135 - ANSWhat is the included angle of a twist drill for stainless steel?
3
with Correct Verified Answers 2026-
2027. Graded A
1 pound lol - ANSHow much does one pound of
Standard Air Weigh?
1:1 - ANSThe best duct for airflow is one with an aspect ratio of
1:1 - ANSWhich duct aspect ratio presents the least
inside surface to the airflow?
1.5 - ANSWhat is the minimum hour rating for a fire damper that is installed
in a 2-hour rated wall?
1.5' - ANSHow far from the edge of the duct or joint should an access door
be located?
1.5/3 - ANSWhat are the two different hour ratings of fire dampers?
1.5x material thickness - ANSWhat is the minimum setback for the nose
bar when bending stainless in the
handbrake?
1
,1.5x1.5 - 16ga - ANSWhat is the minimum size and gage for retaining
angles?
1" - ANSHow much of the structure minimum do retaining angles need to
cover?
1" Spacers - ANSWhat should be done to a backsplash where it contacts
the wall?
1" thick min 22Ga c/w 1" mineral wool and non-combustible spacers -
ANSDescribe a clearance reduction panel that can reduce the clearance to
combustibles to 3"
1/4" rivets, #10 screws, 1/4" bolts on 8" center - ANSList four ways to
attach the retaining angles to the damper sleeve.
10 - ANSWhat is the best welding lens number to use for SMAW?
10' - ANSWhat is the minimum distance from a property line that an
exhaust fan may discharge?
10' - ANSWhat is the minimum distance from an outside air intake that a
grease duct exhaust fan may be
located?
100 BTU/LBS=Change in temp - ANSWhat would be the resulting
temperature if 4000 Btu are added to 100 lbs of water at
2
, 60°F?
100% argon - ANSWhat is a common shielding gas for GTAW stainless?
100% Argon - brown tank - ANSWhat gas is most commonly used to
GTAW stainless steel?
100% tin - ANSWhat type of solder is recommended for food service
items?
11 - ANSWhat division of the specifications is to be referenced for food
service equipment?
12.5" (1/4" per foot) - ANSWhat is the total required slope in inches of a
horizontal run of duct that is 50 feet in length?
12' - ANSWhat is the maximum interval spacing between access doors in
grease ducting?
12x10 - ANSA rectangular duct must deliver 700 CFM at
0.1 " w.g per 100 ft. The best rectangular duct size
is:
13.33 - ANS. How many cubic feet of standard air is
required to make one pound of air.
135 - ANSWhat is the included angle of a twist drill for stainless steel?
3
