CSLB C-15 Flooring and Floor Covering (Trade Exam) — All Questions

Under Cal/OSHA's construction silica standard, when may compressed air be used to clean concrete dust from surfaces?

• a.At the end of each shift
• b.When the work is outdoors
• c.With dust capture, or if unavoidable✓
• d.When workers wear dust masks

The standard bars compressed air for cleaning clothing or surfaces where it could add to silica exposure, unless used with a ventilation system that captures the dust cloud or no alternative is feasible. Masks do not make it permitted. Outdoor work is not an exception. Timing does not change the rule.Cal. Code Regs., tit. 8, §1532.3(f)

Under the silica standard's written exposure control plan, what must the employer designate?

• a.A union steward to sign each day's plan
• b.A competent person to inspect and implement it✓
• c.A Cal/OSHA inspector for each job
• d.A licensed physician to approve every task

The employer must designate a competent person to make frequent and regular inspections of job sites, materials and equipment to implement the plan. A physician's role is medical surveillance, not plan approval. A steward's signature is not required. Cal/OSHA does not assign an inspector to each job.Cal. Code Regs., tit. 8, §1532.3(g)

At what material temperature does the federal epoxy topping specification require mixing?

• a.65 to 85°F✓
• b.At least 50°F
• c.40 to 60°F
• d.90 to 110°F

The specification requires materials at mixing to be between 65 and 85°F. Forty to sixty degrees is too cold for proper cure. Ninety to 110 degrees shortens working life. Fifty degrees as a floor allows material below the required range.UFGS 09 67 23.13 §3.1.5

Shot blasting a broom-finished slab can produce what profile, according to the federal resinous flooring specification?

• a.CSP 1
• b.CSP 9
• c.CSP 5✓
• d.CSP 3 at most

The specification notes that shot blasting coarse or broom-finished concrete can produce CSP 5, coarser than its CSP 3 target. CSP 1 is nearly flat. Capping it at CSP 3 ignores the warning. CSP 9 is the roughest end of the scale, not the stated result.UFGS 09 67 23.16 §3.6