Exit routes and floor loading

0:00 Intro

Exit routes and floor loading, for the CSP exam. Every rule and number here is cited to its primary source, on screen. In this lesson, you'll learn to: state exit route number, height and width rules, apply the exit door rules for locking, hinges and swing, recall exit sign lighting and size requirements, and explain the load and repair duties for walking-working surfaces.

0:32 1910.36(b) · Number of exit routes

Start with exit route counts. At least two must be available, as far apart as practical, so one blocked by fire or smoke leaves the other. One route is allowed only when everyone could still evacuate safely, given employees, building size, occupancy and arrangement.

0:54 1910.36(g), (h)(4) · Height, width, dead ends

Dimensions are exam favorites. The ceiling must be at least 7 feet 6 inches high. Ceiling projections may not reach a point lower than 6 feet 8 inches from the floor. An exit access must be at least 28 inches wide at all points.

1:16 1910.36(a) · Exit separation

An outdoor route may not have a dead end longer than 20 feet. An exit must be separated from the rest of the workplace by fire resistant construction. One hour if the exit connects three or fewer stories. Two hours if four or more stories.

1:40 1910.36(d)-(e) · Exit doors

For every exit, openings are limited to those needed, each with a self-closing fire door, NRTL listed or approved. Four door rules recur. Employees must be able to open an exit route door from the inside at all times without keys, tools or special knowledge. Inside locking is allowed only in mental, penal or correctional facilities, with supervisory personnel continuously on duty and a plan to remove occupants.

2:18 1910.37(b) · Lighting and marking

A side-hinged door must be used to connect any room to an exit route. It must swing out in the direction of exit travel if the room is designed for more than 50 people or is a high hazard area. ” Letters must be not less than 6 inches high, with principal strokes not less than three-fourths of an inch wide.

2:45 1910.37(a) · Maintenance

Light it at 5 foot-candles minimum, distinctive in color. 06 footlamberts minimum. Maintenance: what to keep out, what to keep working. No materials or equipment in the exit route, permanently or temporarily. Exit access must not go through a lockable room like a bathroom, nor lead into a dead-end corridor. Routes must not require travel toward a high hazard area unless the path is effectively shielded by partitions or other physical barriers.

3:21 1910.36(c), (f) · Capacity and discharge

All emergency safeguards, such as sprinklers, alarms, fire doors and exit lighting, must work at all times. Capacity is judged against occupant load. Routes must support the maximum permitted occupant load for each floor served, and capacity may not decrease toward the exit discharge.

3:48 1910.22 · Walking-working surfaces

Each discharge leads directly outside, or to a street, walkway, refuge area, public way or open space with access to the outside, large enough for likely occupants. 22. The employer must ensure each walking-working surface can support the maximum intended load for that surface. Surfaces are inspected regularly and as necessary, and maintained in a safe condition.

4:22 Common exam traps

Hazards are corrected before reuse; if that can't be done immediately, they're guarded until fixed. If a repair involves structural integrity, a qualified person performs or supervises it. Now, five traps that catch people on exam day. One: exit signs need at least 5 foot-candles and 6-inch letters. Two: out-swing applies if the room is designed for over 50 people, or is a high hazard area.

4:59 Recap quiz

Three: exit doors open from inside at all times, without keys, tools or special knowledge. Four: temporary storage in a route is still prohibited. Five: exit access is 28 inches wide minimum; ceiling is at least 7 feet 6 inches. Question 1. A room is designed for 75 people. How must its door to an exit route be arranged? A: side-hinged, swinging in. B: sliding. C: side-hinged, swinging out in the direction of exit travel. D: either direction. C. A room designed to be occupied by more than 50 people needs a side-hinged door swinging out in the direction of exit travel. Question 2. An exit connects five stories. What fire resistance rating must separate it? A: half-hour. B: one-hour. C: two-hour. D: three-hour. C. Four or more stories requires a two-hour rating. Question 3. A floor defect threatens structural integrity. Who performs or supervises the repair? A: a qualified person. B: any employee. C: a competent person. D: the supervisor on duty. A. Structural repairs are performed or supervised by a qualified person, not a competent person. Want to see where you stand on every CSP domain? com.

25 questions, free, no card. You get a readiness score for each CSP domain.