Welcome to your C-43 Sheet Metal - Practice Exam 1
1.
A contractor is calculating the cost of a copper flashing project. Copper sheet is priced at $8.00 per pound and weighs 1.5 lbs/sq ft (16-oz copper). If the project requires 200 sq ft of copper flashing, what is the raw material cost?
A contractor is calculating the cost of a copper flashing project. Copper sheet is priced at $8.00 per pound and weighs 1.5 lbs/sq ft (16-oz copper). If the project requires 200 sq ft of copper flashing, what is the raw material cost?Deselect Answer
2.
What is the minimum roof slope for a standing seam metal roof per SMACNA and standard industry practice?
What is the minimum roof slope for a standing seam metal roof per SMACNA and standard industry practice?Deselect Answer
3.
When sheet metal workers are exposed to construction noise from air compressors and pneumatic tools, at what noise level does Cal/OSHA require hearing protection?
When sheet metal workers are exposed to construction noise from air compressors and pneumatic tools, at what noise level does Cal/OSHA require hearing protection?Deselect Answer
4.
What type of fastener is MOST appropriate for attaching galvanized steel gutters to a painted wood fascia?
What type of fastener is MOST appropriate for attaching galvanized steel gutters to a painted wood fascia?Deselect Answer
5.
What is the approximate weight per square foot of 24-gauge galvanized steel sheet metal?
What is the approximate weight per square foot of 24-gauge galvanized steel sheet metal?Deselect Answer
6.
A sheet metal contractor is installing aluminum flashing against a masonry chimney. What special preparation is required to protect the aluminum from rapid corrosion?
A sheet metal contractor is installing aluminum flashing against a masonry chimney. What special preparation is required to protect the aluminum from rapid corrosion?Deselect Answer
7.
What is the purpose of 'reglets' in sheet metal flashing work?
What is the purpose of 'reglets' in sheet metal flashing work?Deselect Answer
8.
On a set of construction drawings, specifications for sheet metal gauge, finish, and seam type are typically found in which document?
On a set of construction drawings, specifications for sheet metal gauge, finish, and seam type are typically found in which document?Deselect Answer
9.
When installing a sheet metal roof valley, what is the minimum width of valley metal recommended by SMACNA?
When installing a sheet metal roof valley, what is the minimum width of valley metal recommended by SMACNA?Deselect Answer
10.
When soldering copper sheet metal, which flux is most commonly used?
When soldering copper sheet metal, which flux is most commonly used?Deselect Answer
11.
What Cal/OSHA standard establishes fall protection requirements for sheet metal workers on construction sites?
What Cal/OSHA standard establishes fall protection requirements for sheet metal workers on construction sites?Deselect Answer
12.
What is the purpose of 'caulking' at sheet metal flashing joints?
What is the purpose of 'caulking' at sheet metal flashing joints?Deselect Answer
13.
When evaluating a job site for a sheet metal installation, which condition most directly affects the decision to use galvanized vs. aluminum gutters?
When evaluating a job site for a sheet metal installation, which condition most directly affects the decision to use galvanized vs. aluminum gutters?Deselect Answer
14.
When fabricating and installing custom copper flashing at a complex roof intersection, what is the MINIMUM required overlap (lap) at a horizontal joint between two pieces of copper flashing?
When fabricating and installing custom copper flashing at a complex roof intersection, what is the MINIMUM required overlap (lap) at a horizontal joint between two pieces of copper flashing?Deselect Answer
15.
When using a hand seamer on a gutter, what operation is being performed?
When using a hand seamer on a gutter, what operation is being performed?Deselect Answer
16.
When fabricating a flat-lock seam for copper sheet metal roofing, the edges of adjacent panels are folded and interlocked. What material is applied to the seam before locking to ensure watertightness?
When fabricating a flat-lock seam for copper sheet metal roofing, the edges of adjacent panels are folded and interlocked. What material is applied to the seam before locking to ensure watertightness?Deselect Answer
17.
When reviewing project plans, a sheet metal contractor notices the specifications call for 'Kynar 500' finish on aluminum panels. What does this indicate?
When reviewing project plans, a sheet metal contractor notices the specifications call for 'Kynar 500' finish on aluminum panels. What does this indicate?Deselect Answer
18.
What is a 'snap lock punch' used for in sheet metal work?
19.
A sheet metal contractor is installing a gravel stop at the edge of a built-up (BUR) roofing system. What is the primary function of the gravel stop?
A sheet metal contractor is installing a gravel stop at the edge of a built-up (BUR) roofing system. What is the primary function of the gravel stop?Deselect Answer
20.
When installing a sheet metal drip edge at the eave of a shingled roof, the drip edge is installed:
When installing a sheet metal drip edge at the eave of a shingled roof, the drip edge is installed:Deselect Answer
21.
When installing a Type II (non-grease) exhaust fan hood in a commercial building, which duct material is typically acceptable per the California Mechanical Code?
When installing a Type II (non-grease) exhaust fan hood in a commercial building, which duct material is typically acceptable per the California Mechanical Code?Deselect Answer
22.
When laying out a round elbow pattern by triangulation, the sheet metal worker is dividing the elbow into equal:
When laying out a round elbow pattern by triangulation, the sheet metal worker is dividing the elbow into equal:Deselect Answer
23.
A sheet metal contractor wins a bid for a custom HVAC exhaust hood fabrication. Before ordering materials, what is the FIRST step in the design process?
A sheet metal contractor wins a bid for a custom HVAC exhaust hood fabrication. Before ordering materials, what is the FIRST step in the design process?Deselect Answer
24.
Which California code governs the design and installation of sheet metal ductwork for HVAC systems?
Which California code governs the design and installation of sheet metal ductwork for HVAC systems?Deselect Answer
25.
Which SMACNA publication is the primary reference for architectural sheet metal installation standards, including gutters, flashing, and coping?
Which SMACNA publication is the primary reference for architectural sheet metal installation standards, including gutters, flashing, and coping?Deselect Answer
26.
When cutting sheet metal with power shears, which PPE is MOST critical?
When cutting sheet metal with power shears, which PPE is MOST critical?Deselect Answer
27.
What is the purpose of a 'take-off' in sheet metal estimating?
What is the purpose of a 'take-off' in sheet metal estimating?Deselect Answer
28.
What is the purpose of 'beading' a sheet metal duct panel?
29.
When calculating the number of downspouts needed for a building, what is the primary determining factor?
When calculating the number of downspouts needed for a building, what is the primary determining factor?Deselect Answer
30.
What is the purpose of a 'lock-out/tag-out' (LOTO) procedure before performing sheet metal work on HVAC equipment?
What is the purpose of a 'lock-out/tag-out' (LOTO) procedure before performing sheet metal work on HVAC equipment?Deselect Answer
31.
What is a 'saddle fitting' used for in sheet metal ductwork installation?
What is a 'saddle fitting' used for in sheet metal ductwork installation?Deselect Answer
32.
When soldering copper sheet metal in a shop, what ventilation requirement applies?
When soldering copper sheet metal in a shop, what ventilation requirement applies?Deselect Answer
33.
A sheet metal contractor is installing a 4-inch x 3-inch rectangular downspout. At what interval should downspout straps be installed on a 20-foot-tall building?
A sheet metal contractor is installing a 4-inch x 3-inch rectangular downspout. At what interval should downspout straps be installed on a 20-foot-tall building?Deselect Answer
34.
When fabricating a downspout with a cornice brake, what type of seam should be used?
When fabricating a downspout with a cornice brake, what type of seam should be used?Deselect Answer
35.
When flashing a skylight with a pre-manufactured flashing kit on a steep-slope roof, the apron flashing on the downslope side of the skylight is installed:
When flashing a skylight with a pre-manufactured flashing kit on a steep-slope roof, the apron flashing on the downslope side of the skylight is installed:Deselect Answer
36.
When installing a sheet metal chimney cap (a flat or peaked cap over a masonry chimney), what minimum clearance above the flue liner opening is required to allow proper draft?
When installing a sheet metal chimney cap (a flat or peaked cap over a masonry chimney), what minimum clearance above the flue liner opening is required to allow proper draft?Deselect Answer
37.
What is the purpose of 'breaking' or 'swaging' the end of a round duct section?
What is the purpose of 'breaking' or 'swaging' the end of a round duct section?Deselect Answer
38.
What is the minimum safe working distance from a welding arc to prevent 'arc flash' or 'arc eye' injury to non-welding workers in the shop?
What is the minimum safe working distance from a welding arc to prevent 'arc flash' or 'arc eye' injury to non-welding workers in the shop?Deselect Answer
39.
What is the purpose of 'end dams' (end caps with a flap) on step flashing at a wall-to-roof intersection?
What is the purpose of 'end dams' (end caps with a flap) on step flashing at a wall-to-roof intersection?Deselect Answer
40.
What type of metal flashing is installed at the intersection of a roof and a vertical masonry chimney on the upslope (back) side?
What type of metal flashing is installed at the intersection of a roof and a vertical masonry chimney on the upslope (back) side?Deselect Answer
41.
When a sheet metal worker is using a nibbler to cut through sheet metal overhead (above their head), which safety concern is GREATEST?
When a sheet metal worker is using a nibbler to cut through sheet metal overhead (above their head), which safety concern is GREATEST?Deselect Answer
42.
What is the minimum thickness of copper sheet metal for residential valley flashing per SMACNA?
What is the minimum thickness of copper sheet metal for residential valley flashing per SMACNA?Deselect Answer
43.
Which tool is used to form a Pittsburgh seam on a sheet metal duct?
Which tool is used to form a Pittsburgh seam on a sheet metal duct?Deselect Answer
44.
When laying out a pattern for a 90-degree round elbow using gore sections, how many gores are typically used for a standard shop-fabricated elbow?
When laying out a pattern for a 90-degree round elbow using gore sections, how many gores are typically used for a standard shop-fabricated elbow?Deselect Answer
45.
When installing a standing seam metal roof, the seams run in which direction?
When installing a standing seam metal roof, the seams run in which direction?Deselect Answer
46.
What is the maximum weight a sheet metal worker should attempt to lift alone without mechanical assistance per ergonomic guidelines?
What is the maximum weight a sheet metal worker should attempt to lift alone without mechanical assistance per ergonomic guidelines?Deselect Answer
47.
A sheet metal worker is fabricating a conical cap. Which layout method is MOST appropriate?
A sheet metal worker is fabricating a conical cap. Which layout method is MOST appropriate?Deselect Answer
48.
What is the SMACNA minimum duct velocity for kitchen exhaust ductwork to prevent grease accumulation?
What is the SMACNA minimum duct velocity for kitchen exhaust ductwork to prevent grease accumulation?Deselect Answer
49.
When using a step ladder to install sheet metal in a shop or on a job site, which of the following practices is PROHIBITED by Cal/OSHA?
When using a step ladder to install sheet metal in a shop or on a job site, which of the following practices is PROHIBITED by Cal/OSHA?Deselect Answer
50.
When sheet metal siding panels are installed using concealed fastener clips, what is the PRIMARY advantage over exposed fastener systems?
When sheet metal siding panels are installed using concealed fastener clips, what is the PRIMARY advantage over exposed fastener systems?Deselect Answer
51.
When installing a sheet metal coping cap on a parapet wall, what must be provided to allow for thermal expansion?
When installing a sheet metal coping cap on a parapet wall, what must be provided to allow for thermal expansion?Deselect Answer
52.
When reviewing architectural plans for a sheet metal scope of work, which drawing type shows roof slopes, ridge heights, and valley locations?
When reviewing architectural plans for a sheet metal scope of work, which drawing type shows roof slopes, ridge heights, and valley locations?Deselect Answer
53.
What is the minimum slope (pitch) required for a gutter to ensure proper drainage toward the downspout per standard installation practice?
What is the minimum slope (pitch) required for a gutter to ensure proper drainage toward the downspout per standard installation practice?Deselect Answer
54.
A sheet metal worker accidentally cuts themselves on a sharp sheet metal edge. After immediate first aid, what OSHA-related requirement applies?
A sheet metal worker accidentally cuts themselves on a sharp sheet metal edge. After immediate first aid, what OSHA-related requirement applies?Deselect Answer
55.
What is the primary purpose of installing 'toe boards' on scaffolding used by sheet metal workers?
What is the primary purpose of installing 'toe boards' on scaffolding used by sheet metal workers?Deselect Answer
56.
When installing a sheet metal exhaust hood above a commercial kitchen range, the minimum clearance from the hood to combustible construction above must be maintained per the CMC. Which agency enforces this requirement?
When installing a sheet metal exhaust hood above a commercial kitchen range, the minimum clearance from the hood to combustible construction above must be maintained per the CMC. Which agency enforces this requirement?Deselect Answer
57.
When installing galvanized steel gutters adjacent to a masonry (brick) wall, what must be done to prevent galvanic corrosion?
When installing galvanized steel gutters adjacent to a masonry (brick) wall, what must be done to prevent galvanic corrosion?Deselect Answer
58.
A sheet metal estimator is calculating the number of 26-gauge galvanized steel coils needed for a standing seam roof. The roof has 8,000 square feet of surface area. If the coil covers 200 square feet per 100-pound coil, how many coils are needed?
A sheet metal estimator is calculating the number of 26-gauge galvanized steel coils needed for a standing seam roof. The roof has 8,000 square feet of surface area. If the coil covers 200 square feet per 100-pound coil, how many coils are needed?Deselect Answer
59.
What is a 'reglet cap flashing' and when is it used?
60.
When installing a roof jack (pipe flashing) around a round plumbing vent pipe, the flashing collar must overlap the roofing material by at least how many inches on the upslope side?
When installing a roof jack (pipe flashing) around a round plumbing vent pipe, the flashing collar must overlap the roofing material by at least how many inches on the upslope side?Deselect Answer
61.
What is the minimum distance that must be maintained between a sheet metal worker and an energized overhead power line when using a 20-foot extension ladder?
What is the minimum distance that must be maintained between a sheet metal worker and an energized overhead power line when using a 20-foot extension ladder?Deselect Answer
62.
When installing gutters on a building with multiple downspouts, where is the BEST location to place the downspout outlet in relation to the gutter run?
When installing gutters on a building with multiple downspouts, where is the BEST location to place the downspout outlet in relation to the gutter run?Deselect Answer
63.
What gauge of sheet metal is the HEAVIEST?
64.
Which type of seam is used to join two flat sheet metal panels in a single-lock standing seam roof?
Which type of seam is used to join two flat sheet metal panels in a single-lock standing seam roof?Deselect Answer
65.
Which welding process produces the LEAST distortion on thin-gauge sheet metal?
Which welding process produces the LEAST distortion on thin-gauge sheet metal?Deselect Answer
66.
What is the FIRST action a sheet metal worker should take when a co-worker receives a severe laceration from a sheet metal edge?
What is the FIRST action a sheet metal worker should take when a co-worker receives a severe laceration from a sheet metal edge?Deselect Answer
67.
When sheet metal workers are hoisting a large sheet metal bundle with a crane or forklift, which action is PROHIBITED?
When sheet metal workers are hoisting a large sheet metal bundle with a crane or forklift, which action is PROHIBITED?Deselect Answer
68.
What is the standard minimum clearance between the bottom of a kitchen exhaust hood and the cooking surface for residential applications per the California Mechanical Code?
What is the standard minimum clearance between the bottom of a kitchen exhaust hood and the cooking surface for residential applications per the California Mechanical Code?Deselect Answer
69.
Which of the following is the BEST method for determining the total linear footage of step flashing required for a roofing project?
Which of the following is the BEST method for determining the total linear footage of step flashing required for a roofing project?Deselect Answer
70.
What is the standard overlap for a Pittsburgh seam connection on a rectangular duct?
What is the standard overlap for a Pittsburgh seam connection on a rectangular duct?Deselect Answer
71.
What type of fire extinguisher is required in a sheet metal shop where both electrical equipment and metal chips are present?
What type of fire extinguisher is required in a sheet metal shop where both electrical equipment and metal chips are present?Deselect Answer
72.
When bidding a sheet metal project, labor costs for sheet metal work in California are typically estimated using which unit?
When bidding a sheet metal project, labor costs for sheet metal work in California are typically estimated using which unit?Deselect Answer
73.
What is the purpose of 'hemming' the edge of a sheet metal piece?
What is the purpose of 'hemming' the edge of a sheet metal piece?Deselect Answer
74.
When a sheet metal worker is operating a power brake (press brake) in the shop, what is the MOST important safety practice?
When a sheet metal worker is operating a power brake (press brake) in the shop, what is the MOST important safety practice?Deselect Answer
75.
How many 4' x 10' sheets of metal are needed to fabricate 300 linear feet of gutter with a stretch-out of 13 inches?
How many 4' x 10' sheets of metal are needed to fabricate 300 linear feet of gutter with a stretch-out of 13 inches?Deselect Answer
76.
When designing a sheet metal project, what does the term 'stretch-out' refer to?
When designing a sheet metal project, what does the term 'stretch-out' refer to?Deselect Answer
77.
A sheet metal worker is working on a flat roof without guardrails. The roof edge is 12 feet above the ground. Which fall protection method is REQUIRED?
A sheet metal worker is working on a flat roof without guardrails. The roof edge is 12 feet above the ground. Which fall protection method is REQUIRED?Deselect Answer
78.
Which tool is used to attach an end cap on a 5-inch ogee (K-style) rain gutter?
Which tool is used to attach an end cap on a 5-inch ogee (K-style) rain gutter?Deselect Answer
79.
What is the purpose of a 'crimper' in sheet metal fabrication?
What is the purpose of a 'crimper' in sheet metal fabrication?Deselect Answer
80.
When fabricating a rectangular-to-round transition fitting (a 'cheese wedge' or 'Boston'), which layout method is used?
When fabricating a rectangular-to-round transition fitting (a 'cheese wedge' or 'Boston'), which layout method is used?Deselect Answer
81.
Which process is used to connect sheet metal ductwork sections in the field using a pre-formed S-slip and drive clip?
Which process is used to connect sheet metal ductwork sections in the field using a pre-formed S-slip and drive clip?Deselect Answer
82.
A sheet metal contractor is estimating a job that requires 450 linear feet of 5-inch K-style aluminum gutter. If gutters come in 10-foot sections, how many sections are needed with a 10% waste factor?
A sheet metal contractor is estimating a job that requires 450 linear feet of 5-inch K-style aluminum gutter. If gutters come in 10-foot sections, how many sections are needed with a 10% waste factor?Deselect Answer
83.
A sheet metal worker is MIG welding galvanized steel ductwork. What is the MOST important safety precaution specific to this operation?
A sheet metal worker is MIG welding galvanized steel ductwork. What is the MOST important safety precaution specific to this operation?Deselect Answer
84.
A sheet metal contractor must calculate the developed length (stretch-out) of a 4-inch x 4-inch square downspout. What is the minimum sheet metal width needed to fabricate one section?
A sheet metal contractor must calculate the developed length (stretch-out) of a 4-inch x 4-inch square downspout. What is the minimum sheet metal width needed to fabricate one section?Deselect Answer
85.
When installing a continuous (seamless) aluminum gutter, how are sections joined when the run exceeds the machine's maximum output length?
When installing a continuous (seamless) aluminum gutter, how are sections joined when the run exceeds the machine's maximum output length?Deselect Answer
86.
What is a 'cricket' or 'saddle' in sheet metal roofing terminology?
What is a 'cricket' or 'saddle' in sheet metal roofing terminology?Deselect Answer
87.
A sheet metal worker is using a plasma cutter in the shop. Which PPE is specifically required for this operation that may NOT be required for other sheet metal operations?
A sheet metal worker is using a plasma cutter in the shop. Which PPE is specifically required for this operation that may NOT be required for other sheet metal operations?Deselect Answer
88.
A sheet metal contractor is installing Z-flashing (Z-bar) between two courses of horizontal siding panels. What is the purpose of this flashing?
A sheet metal contractor is installing Z-flashing (Z-bar) between two courses of horizontal siding panels. What is the purpose of this flashing?Deselect Answer
89.
What is the stretch-out (girth) of a 5-inch half-round gutter?
What is the stretch-out (girth) of a 5-inch half-round gutter?Deselect Answer
90.
What is the purpose of 'bonding' sheet metal HVAC ductwork to the building's electrical grounding system?
What is the purpose of 'bonding' sheet metal HVAC ductwork to the building's electrical grounding system?Deselect Answer
91.
When a sheet metal contractor installs a pre-manufactured chimney cap, what is the purpose of the bird screen installed around the perimeter of the cap?
When a sheet metal contractor installs a pre-manufactured chimney cap, what is the purpose of the bird screen installed around the perimeter of the cap?Deselect Answer
92.
A standing seam metal roof panel expands when heated by the sun. Which installation feature accommodates this thermal movement?
A standing seam metal roof panel expands when heated by the sun. Which installation feature accommodates this thermal movement?Deselect Answer
93.
When installing a commercial kitchen Type I grease exhaust hood, the duct must be constructed of what material and gauge?
When installing a commercial kitchen Type I grease exhaust hood, the duct must be constructed of what material and gauge?Deselect Answer
94.
When working in a sheet metal fabrication shop, what hazard is created by 'oil-canning' (random flexing) of large sheet metal panels?
When working in a sheet metal fabrication shop, what hazard is created by 'oil-canning' (random flexing) of large sheet metal panels?Deselect Answer
95.
What is the purpose of 'grounding' sheet metal equipment (brakes, shears, and rollformers) in the shop?
What is the purpose of 'grounding' sheet metal equipment (brakes, shears, and rollformers) in the shop?Deselect Answer
96.
What is the purpose of a 'notch' cut at the corner of a sheet metal piece before bending on a brake?
What is the purpose of a 'notch' cut at the corner of a sheet metal piece before bending on a brake?Deselect Answer
97.
What is the maximum unsupported length for a 4-inch round aluminum downspout between hangers?
What is the maximum unsupported length for a 4-inch round aluminum downspout between hangers?Deselect Answer
98.
What minimum gauge galvanized steel does SMACNA recommend for rectangular duct 13 to 30 inches wide in a low-pressure system?
What minimum gauge galvanized steel does SMACNA recommend for rectangular duct 13 to 30 inches wide in a low-pressure system?Deselect Answer
99.
When a sheet metal worker is working in a confined space (such as a mechanical room or crawl space) to install ductwork, what regulatory requirement applies?
When a sheet metal worker is working in a confined space (such as a mechanical room or crawl space) to install ductwork, what regulatory requirement applies?Deselect Answer
100.
A sheet metal project requires 120 linear feet of 4-inch x 4-inch rectangular duct. Sheet metal is sold in 4' x 10' sheets. How many sheets are needed for the straight duct sections (ignoring fittings and seam allowances)?
A sheet metal project requires 120 linear feet of 4-inch x 4-inch rectangular duct. Sheet metal is sold in 4' x 10' sheets. How many sheets are needed for the straight duct sections (ignoring fittings and seam allowances)?Deselect Answer
