Sheet 56Flashcards · 30 cards
STSC flashcards
Cards on the numbers and rules that sit close to a neighboring one: construction against general industry, 6 feet against 10, 90 dBA against 85. Read the front, say the answer, then flip.
- ExamSTSC
- Cards30
- UpdatedOct 12, 2026
Limits, distances and order of operations
Card 1Fall protection trigger height, constructionTap to flip
6 feet to a lower level (29 CFR 1926.501). The 4-foot figure belongs to general industry, 1910.
Card 2Fall protection height on scaffoldsTap to flip
10 feet above a lower level (29 CFR 1926.451).
Card 3Steel erection fall protection heightsTap to flip
15 feet for most steel erection work; connectors above two stories or 30 feet, whichever is less (Subpart R).
Card 4Guardrail top rail: height and strengthTap to flip
42 inches, plus or minus 3, holding 200 pounds. Midrail about halfway, holding 150 pounds.
Card 5Personal fall arrest limitsTap to flip
Free fall no more than 6 feet; deceleration no more than 3.5 feet.
Card 6Body belts in fall arrestTap to flip
Not allowed as part of a personal fall arrest system since 1998 (29 CFR 1926.502).
Card 7Safety netsTap to flip
No more than 30 feet below the working surface (29 CFR 1926.502).
Card 8Asbestos exposure limitTap to flip
0.1 fiber per cubic centimeter, 8-hour TWA (29 CFR 1926.1101).
Card 9Trench protective systems, Subpart PTap to flip
5 feet, unless the excavation is entirely in stable rock. Deeper than 20 feet: designed by a registered professional engineer.
Card 10Ladder or other exit in a trenchTap to flip
Within 25 feet of lateral travel, in trenches 4 feet deep or more.
Card 11Spoil pile setback from the trench edgeTap to flip
At least 2 feet.
Card 12Excavation inspectionsTap to flip
A competent person: daily before work, and again after rain or any event that raises the hazard.
Card 13Crane clearance from power lines, 29 CFR 1926.1408Tap to flip
20 feet planning distance for lines up to 350 kV; Table A: 10 feet for lines up to 50 kV.
Card 14Confined space test orderTap to flip
Oxygen, then flammables, then toxics.
Card 15Acceptable oxygen range for entryTap to flip
19.5% to 23.5%.
Card 16Hot work fire watch, 29 CFR 1926.352Tap to flip
A “sufficient period” after the work ends (29 CFR 1926.352). The 30-minute figure comes from 1910 and NFPA 51B.
Card 17Extinguisher coverage on a construction floorTap to flip
One 2A unit per 3,000 square feet, no more than 100 feet of travel (29 CFR 1926.150). 75 feet is the general-industry number.
Card 18Flammable liquids over 5 gallonsTap to flip
A 10B extinguisher within 50 feet.
Card 19Construction noise limitTap to flip
90 dBA over 8 hours, 5 dB exchange rate (29 CFR 1926.52). The 85 dBA action level is in 1910.95.
Card 20Respirable crystalline silica, constructionTap to flip
PEL 50 µg/m³, action level 25, 8-hour TWA (29 CFR 1926.1153).
Card 21Lead in construction airTap to flip
PEL 50 µg/m³, action level 30.
Card 22Respirator order of eventsTap to flip
Medical evaluation, then fit test, then use. Fit test again every year and with any new model (1910.134, applied by 1926.103).
Card 23Safety Data Sheet layoutTap to flip
16 sections. Section 2 hazards, 4 first aid, 8 exposure controls and PPE, 11 toxicology.
Card 24Hierarchy of controls, top to bottomTap to flip
Elimination, substitution, engineering, administrative, PPE.
Card 25Competent person, two partsTap to flip
Can identify existing and predictable hazards, and has authority to correct them promptly.
Card 26OSHA 300 log timingTap to flip
Record a case within 7 calendar days; keep the records 5 years.
Card 27Reporting deadlines to OSHATap to flip
Fatality: 8 hours. Inpatient hospitalization, amputation or loss of an eye: 24 hours.
Card 28Incident rate formulaTap to flip
Cases × 200,000 ÷ hours worked.
Card 29STSC exam lengthTap to flip
100 items in 2 hours, closed book, at a Pearson VUE center (BCSP Complete Guide, as of October 2026).
Card 30STSC fees paid to BCSPTap to flip
$120 application, $185 exam, $70 a year to renew (BCSP At-A-Glance V.2026.04.01, as of October 2026).
Working the deck
Go through once without stopping and set aside every card you hesitated on. The hesitations are your list. Several have their own mix-up sheets, for example fall protection trigger heights, ladder rules and noise exposure limits; the study guide contents list all of them.
The cards in the practice set put these numbers inside jobsite scenarios, so run it after the deck to use them in context.
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