CSLB C-6 Cabinet, Millwork and Finish Carpentry (Trade Exam) — All Questions
24 questions
Which statement about hardwoods and softwoods is supported by the Wood Handbook?
- a.The names are botanical✓
- b.Hardwoods are evergreen trees
- c.Hardwoods are harder than softwoods
- d.Softwoods contain vessels; hardwoods do not
The Wood Handbook explains that hardwoods are angiosperms and softwoods gymnosperms, and that some softwoods, such as longleaf pine and Douglas-fir, are harder than some hardwoods. Hardwoods, not softwoods, contain vessels, and temperate hardwoods are usually deciduous, not evergreen.Wood Handbook (FPL-GTR-282), hardwoods and softwoods
In a cherry board, which part is the band of lighter-colored wood next to the bark?
- a.Latewood
- b.Pith
- c.Sapwood✓
- d.Heartwood
The Wood Handbook describes sapwood as the band of lighter-colored wood adjacent to the bark, and heartwood as the darker wood inside it. The pith is the center of the stem, and latewood is the denser part of each growth ring, not a band next to the bark.Wood Handbook (FPL-GTR-282), sapwood and heartwood
In commercial practice, lumber whose growth rings meet the wide face at 60 degrees is classed as what?
- a.Rotary cut
- b.Plainsawn
- c.Flat-grain
- d.Quartersawn✓
The Wood Handbook says lumber with rings at 45 to 90 degrees to the wide face is called quartersawn, and 0 to 45 degrees is plainsawn. Rotary cut describes peeled veneer, and flat-grain is another name for flatsawn or plainsawn lumber.Wood Handbook (FPL-GTR-282), plainsawn and quartersawn
What is wood's equilibrium moisture content?
- a.The moisture content at which the cell cavities are full of water
- b.The moisture content at which it neither gains nor loses moisture✓
- c.The moisture content listed on the grade stamp
- d.The moisture content at which wood is oven-dry
The Wood Handbook defines equilibrium moisture content as the moisture content at which wood is neither gaining nor losing moisture, which depends on the surrounding humidity and temperature. Full cell cavities describe wood above fiber saturation; oven-dry wood is at zero; and a grade stamp is not an equilibrium value.Wood Handbook (FPL-GTR-282), equilibrium moisture content
A sample weighs 110 grams when cut and 100 grams after oven-drying. What is its moisture content?
- a.11 percent
- b.9.1 percent
- c.110 percent
- d.10 percent✓
Moisture content equals the weight of water divided by the oven-dry weight, times 100: (110 − 100) ÷ 100 × 100 = 10 percent. Dividing by the wet weight gives 9.1 percent, which uses the wrong base; 11 and 110 percent misplace the numbers.Wood Handbook (FPL-GTR-282), moisture content formula
Above about what moisture content does the Wood Handbook say meter readings should be considered only qualitative?
- a.20 percent
- b.12 percent
- c.30 percent✓
- d.6 percent
The Handbook says readings greater than 30 percent must be considered only qualitative; resistance meters read reliably from about 6 to 30 percent. Twelve and 20 percent are within the reliable range, and 6 percent is its lower end.Wood Handbook (FPL-GTR-282), electric moisture meters
A wide plainsawn board cups as it dries. Which property of wood explains this?
- a.It shrinks equally in each direction
- b.It shrinks more along the grain than across it
- c.It swells as it dries below 30 percent
- d.It shrinks more tangentially than radially✓
Wood shrinks about twice as much tangentially as radially, so the face nearer the bark shrinks more and the board cups. Shrinkage along the grain is very small; shrinkage is not equal in each direction; and wood shrinks, not swells, as it dries below fiber saturation.Wood Handbook (FPL-GTR-282), dimensional stability
In plywood, what is a crossband?
- a.The outer face veneer on the best side
- b.A ply running parallel to the faces in the center
- c.The edge banding applied to exposed edges
- d.An inner ply crossing the face grain✓
The Wood Handbook calls inner plies whose grain runs perpendicular to the faces crossbands, and inner plies parallel to the faces centers. The outer plies are the face and back, and edge banding is a separate applied material.Wood Handbook (FPL-GTR-282), plywood
Which veneer is made by rotating a log against a knife to produce continuous sheets of flat-grain veneer?
- a.Rotary-cut veneer✓
- b.Sawn veneer
- c.Book-matched veneer
- d.Sliced veneer
The Wood Handbook describes rotary-cut veneer as produced by rotating a log against a knife, giving continuous flat-grain sheets. Sliced veneer is cut from a flitch moved against a knife; sawn veneer is sawn from flitches; and book-matching is a way of arranging leaves, not a cutting method.Wood Handbook (FPL-GTR-282), veneer cutting
Why is particleboard usually made with fine particles on the faces and coarser particles in the core?
- a.To raise the panel's moisture resistance
- b.For a smoother surface to laminate or paint✓
- c.To allow screws to hold better in the edges
- d.To make the panel stronger along its edges
The Wood Handbook says the fine-particle faces give a smoother surface for laminating, overlaying, painting or veneering. The layering is not described as strengthening edges, improving edge screw holding, or adding moisture resistance.Wood Handbook (FPL-GTR-282), particleboard
Which laminate grade is intended for light-duty, semi-exposed cabinet interiors under the federal casework guide specification?
- a.VGS, vertical general purpose
- b.HGS, horizontal general purpose
- c.HGP, horizontal postformable
- d.CLS, cabinet liner standard✓
The guide specification describes cabinet liner standard grade, 0.020 inch, as intended for light-duty semi-exposed interior surfaces. HGS is for horizontal surfaces, VGS for exposed vertical surfaces, and HGP for postformed horizontal surfaces.UFGS 06 41 16.00 10 (laminate grades)
What mainly gives high-pressure decorative laminate its stain and abrasion resistance?
- a.The contact adhesive
- b.Melamine overlay sheets✓
- c.The particleboard substrate
- d.Phenolic kraft core sheets
The Wood Handbook explains that thin overlay sheets with more melamine resin provide stain and abrasion resistance, while phenolic kraft sheets make up most of the thickness. The substrate and the adhesive are not the source of surface resistance.Wood Handbook (FPL-GTR-282), decorative laminates
When is a spreader not required on a hand-fed table saw under Section 4300.1?
- a.When ripping stock thicker than 1 inch
- b.When dadoing, grooving or crosscutting✓
- c.When the operator uses a push stick
- d.When ripping hardwood with a sharp blade
Section 4300.1 requires a spreader except when crosscutting, grooving, dadoing or rabbeting. Ripping is exactly when the spreader is needed, regardless of thickness, species or blade sharpness, and a push stick does not replace it.Cal. Code Regs. tit. 8 §4300.1 (table saws)
What does Cal/OSHA call a work-guiding, hold-down device with angled spring-like fingers that keeps stock against the fence?
- a.A riving hood
- b.Featherboard✓
- c.A push block
- d.A spreader
Section 4297 defines a comb or featherboard as a work-guiding and hold-down device with spring-like fingers angled in the direction of travel. A spreader keeps the kerf open; a push block pushes stock over cutters; and a riving hood is not the defined term.Cal. Code Regs. tit. 8 §4297 (definitions)
A radial arm saw is used for ripping. In which direction must the stock be fed?
- a.Against the direction the blade turns✓
- b.With the direction the blade turns
- c.From either end, if the guard is down
- d.From the end marked for crosscutting
Section 4309 requires ripping against the direction in which the blade turns, with a label at the rear reading DO NOT RIP FROM THIS END. Feeding with the rotation pulls the stock through; neither end is acceptable at will; and crosscut markings do not govern ripping.Cal. Code Regs. tit. 8 §4309 (radial arm saws)
What is the maximum space allowed between a disc sander's revolving disc and the edge of its table?
- a.1/2 inch
- b.1/4 inch✓
- c.1/8 inch
- d.1 inch
Section 4313 limits the space between the revolving disc and the table edge to 1/4 inch and requires the periphery and back of the disc to be guarded. One-half and 1 inch exceed the limit, and 1/8 inch is the jointer's rear-table clearance, not this rule.Cal. Code Regs. tit. 8 §4313 (disc sanders)
What does Cal/OSHA require for the boring bits on a boring machine?
- a.A guard over the bit and chuck✓
- b.A guard below the table
- c.No guard, because bits turn slowly
- d.A guard when boring hardwood
Section 4316 requires boring bits to have a guard that encloses all portions of the bit and chuck above the material. Guarding only below the table misses the exposed bit; there is no speed or species exception.Cal. Code Regs. tit. 8 §4316 (boring machines)
Glue is spread on two cabinet parts, which then sit apart for several minutes before assembly. What does the Wood Handbook call this period, and what is its risk?
- a.Clamp time; the glue may squeeze out
- b.Pot life; the glue may freeze
- c.Closed assembly; the glue may cure too fast
- d.Open assembly; glue may dry out✓
The Handbook says that during open assembly the adhesive loses solvent to the air and the wood and can become too dry to form a useful bond. Closed assembly begins when the surfaces are joined; pot life refers to mixed adhesive in the container; and clamp time follows assembly.Wood Handbook (FPL-GTR-282), adhesives
A shop glues panels from wood at 4 percent moisture content in a very dry winter shop. What does the Wood Handbook warn about bonding very dry wood with waterborne glue?
- a.The glue cures stronger than normal
- b.Moisture content has no effect on bonding
- c.The wood absorbs the glue's water too fast✓
- d.The glue foams and expands in the joint
The Handbook says aqueous adhesives dry out prematurely on wood below 6 percent moisture content because the wood absorbs their water so quickly that flow and penetration suffer. The bond is not stronger, the glue does not foam, and moisture content strongly affects bonding.Wood Handbook (FPL-GTR-282), bonding and moisture content
Compared with screws in side grain, about how much withdrawal resistance do screws in end grain average when splitting is avoided?
- a.About 75 percent✓
- b.About 50 percent
- c.About the same
- d.About 25 percent
The Wood Handbook says screws in end grain average about 75 percent of the withdrawal load of screws in side grain. Twenty-five and 50 percent understate it, and end grain holds less than side grain, not the same.Wood Handbook (FPL-GTR-282), fastenings
Under the federal casework guide specification, what is the minimum ANSI/BHMA A156.9 grade for cabinet hardware, outside schools and hospitals?
- a.No grade is specified
- b.Grade 2✓
- c.Grade 3
- d.Grade 1
The guide specification requires cabinet hardware to meet ANSI/BHMA A156.9 Grade 2 at a minimum, with Grade 1 for school and hospital applications. Grade 3 is below the stated minimum, and a grade is specified.UFGS 06 41 16.00 10 (cabinet hardware)
Which information must appear on a TSCA Title VI label for a bundle of composite wood panels?
- a.The panel's measured emission in ppm
- b.The buyer's name and the job location
- c.Fabricator name, month and year of manufacture
- d.Producer, lot, certifier number, statement✓
Panel labels must show the panel producer's name, the lot number, the EPA TSCA Title VI certifier's number and a statement that the products are certified. Fabricator name and month/year belong on finished-goods labels; buyer and job details and a ppm value are not label requirements.40 CFR §770.45 (labeling)
Kiln-dried exterior trim is stored in a closed shed with an unpaved floor. How high above the floor should the supports hold it, per the Wood Handbook?
- a.At least 6 inches
- b.At least 12 inches✓
- c.At least 2 inches
- d.At least 24 inches
The Handbook recommends supports at least 6 inches high on a paved floor and 12 inches if the floor is not paved. Six inches is the paved-floor figure; 2 inches is too low; and 24 inches is more than the recommendation.Wood Handbook (FPL-GTR-282), storage of finish and factory lumber
Stair handrail stock overhangs the rear of a commercial delivery truck by 5 feet. What does the federal rule require?
- a.A white cloth tied to the load
- b.No flags until the overhang reaches 10 feet
- c.Red or orange flags on the load's end✓
- d.Hazard lights on the cab
A load extending more than 4 feet beyond the rear of a commercial motor vehicle must have its extremities marked with red or orange fluorescent warning flags at least 18 inches square. Ten feet is not the threshold; a white cloth does not meet the rule; and cab hazard lights do not mark the load.49 CFR §393.87 (warning flags on projecting loads)