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Cheat sheet
59 figures that decide questions on the OSHA 10-Hour Construction paper, each with the paragraph it comes from so you can check any of them. Print it, screenshot it, whatever gets it in front of you the night before.
Nobody fails because they never saw a number. They fail because two numbers sit close together and go the wrong way round under time pressure. These are the pairs.
The 24-hour window, which is for hospitalisation, amputation and loss of an eye.
The exemption covers routine recordkeeping only. Every employer still reports fatalities and severe injuries.
Working days, not calendar days, and the clock starts on receipt.
Scaffolds trigger at 10 feet, and general industry at 4 feet. Three different numbers for three different situations.
The 3.5-foot deceleration distance. This is the most confused pair in Subpart M.
Crane work requires 20 feet. Two numbers, two situations, constantly swapped.
Also before first use, after repair, and after any suspected damage. All four triggers apply.
The pressure limit AND chip guarding AND PPE. All three, not any one.
Egress is required at 4 feet. One foot apart, different triggers, and the most common mix-up in Subpart P.
Type B is 1:1 at 45 degrees, Type A is ¾:1 at 53 degrees. Less stable soil needs a flatter slope.
This is why a buried worker cannot be pulled free by hand.
The action level is 25 µg/m³, half the PEL.
Section 4 is first aid, Section 8 is exposure controls and PPE.
Medical evaluation comes first. A respirator adds breathing strain before it adds protection.
Suspension ropes carry a factor of 6, not 4.
General construction triggers at 6 feet. Scaffolds are the exception.
An approved cabinet holds up to 60 gallons of Class I or II.
No penalty amounts appear here. OSHA adjusts them for inflation every year, so any figure we printed would be wrong within twelve months while still looking authoritative. If you need a current penalty figure, take it from OSHA directly.