Configuring Egress

Question 1

Egress separation distance

Answer 1

• Two of the ways out must be separated by a distance not less than one half the diagonal distance between the areas served
  ○ 1/3 if sprinklered
  ○ 1 hr rated corridor is measured along travel path, all others measured in straight line
  200-400 feet max travel measured along travel path

Question 2

Dead end limitations

Answer 2

20-50 ft

Question 3

Egress doors

Answer 3

• Any door other than swing is only allowed for limited occupant dwellings - see code
  
  • Swing in direction of egress travel
    Limit encroachment to no more than 7 in when fully open @ 180 deg, no more than half egress width @ 90

Question 4

Egress exits

Answer 4

• 0-500 two exits
  
  • 500-1000 3 exits
  • 1000+ 4 exits
    Exit doors directly from room do not need fire rating

Question 5

Stair enclosure

Answer 5

• 4+ floors have 2hr rating with 1.5 hr door
  
  • <4 has 1 hr rating with 1 hr self closing door
    Unless floor has 2hr rating then enclosure also needs 2 hr rating

Question 6

Smokeproof enclosure

Answer 6

• Usually for highrises or buildings way underground
  
  • Naturally or mechanically vented vestibules or balconies
    Not needed if building is sprinklered

Question 7

Exit passageway

Answer 7

• Horizontal means of egress that is protected from fire the same as enclosed stair
  ○ Preserve continuity of shifted stair
  ○ Eliminate excessive travel on a floor
  Connect stair to outside

Question 8

Accessible routes

Answer 8

• From site to building
  
  • 60% of entries accessible
  • Accessible units
    ○ Accessible units:fully accessible
    ○ Type a: wheel chair clear space accessible, height surfaces not accessible
    Type b: wheel chair clear space less stringent,not all parts of space have to be accessible