Means of Egress Exit Routes Subpart E مسالك الهروب

1. Means of EgressExit RoutesSubpart Eمسالك الهروب From 29 CFR 1910.35 To 29 CFR 1910.38

2. This Subpart is about ensuring that when people need to have a safe and efficient means of leaving a building or facility under emergency situations, that means will be there and they will have minimal problems finding it and using it. The entire Subpart E is promulgated from NFPA 101 Life Safety Code. للتأكد من وجود وسائل هروب آمنة و مخارج للطوارىء كافية لإخراج شاغلى المبنى فى حالات الطوارىء المرجع لهذه المواصفات هو: NFPA 101 وهى المواصفات الخاصة بإنقاذ الأرواح المقدمة

3. Means of Egress: It is a continuous and unobstructed way of exit travel from any point in a building or structure to a public way, and consists of three separate and distinct parts: 1- The way of exit access 2- The Exit, 3- The exit discharge. مسالك الهروب: هى مسارات الإنتقال التى يسلكها شاغلو المبنى ولا يوجد بها أية عوائق من أية نقطة بالمبنى إلى الطريق العام وتتكون من ثلاثة أجزاء: مسار الوصول إلى المخرج المخرج منفذ صرف المخرج تعريفات29 CFR 1910.35

4. مسار الوصول إلى المخرج

5. المخرج

6. منفذ صرف المخرج

7. Exit Accessمسار الوصول للمخرج Is that portion of a means of egress which leads to an entrance to an exit

8. Access to Exits • Mirrors must not be placed on or near exit doors • عدم تركيب مرايات بالقرب من مخارج الطوارىء • Routes of exit access must never be toward a high hazard location, unless effectively shielded • الطريق إلى المخرج يجب ألا يكون من خلال أماكن عالية الخطورة ما لم تكن هذه الأماكن قد تم عزلها. • Minimum width of any way of exit access is 28 inches • الطريق إلى المخرج يجب ألا يقل عرضه عن 28 بوصة (70 سم)

10. Exterior Routes of Exit Access • Permanent, reasonably straight route of travel • يجب أن تكون مسارات الحركة للوصول للمخرج مسارات دائمة ويفضل أن تكون مسارات مستقيمة • No obstructions of exterior access route • يجب ألا توجد أية عوائق فى مسارات الحركة للوصول للمخرج • No dead ends longer than 20 feet • المسافة بين النهاية المسدودة ومسار الوصول إلى المخرج أو مدخل المخرج القريب تسمى مسافة النهاية الميتة والتى يجب ألا تزيد عن 20 قدم (6 متر)

11. Unobstructed Access • Maintain exit routes free of obstructions • Exit route cannot require travel to a dead end • Exit route cannot go through a room that might be locked

16. Exit Route Capacityand Dimensions • Must support the maximum permitted occupant load for each floor served • Capacity must not decrease in the direction of exit route travel to the exit discharge • Ceiling must be at least 7-½ ft. high with no projection reaching a point less than 6 ft.-8 in. from floor • An exit access must be at least 28 in. wide at all points

17. Exit routes must have adequate capacity & size • Exit routes must be at least: • 6 feet, 8 inches high • 28 inches wide 7b

18. 7-½ ft. 6 ft.- 8 in. Exit Route Capacity and Dimensions • Ceiling must be at least 7-½ ft. high with no projection reaching a point less than 6 ft.- 8 in. from floor • An exit access must be at least 28 in. wide at all points 1910.36 (g)(1) and (2)

19. ExitالمخرجIs that portion of a means of egress which is separated from all other spaces of the building or structure by construction or equipment to provide a protected way of travel to the exit discharge

20. Means of Egress, General29 CFR 1910.37 • Protective Enclosure of Exits: When an exit is protected by separation from Other parts of the building, the separating Construction shall meet the following: 1- Three Stories or less – 1hr. Fire resistance 2- Four or more stories – 2hrs. Fire resistance

21. Exit enclosure Two - hour fire resistance – rating for four or more stories. Exit Routes:Basic Requirements An exit must be separated by fire resistant materials. One - hour fire resistance - rating:three or fewer stories 1910.36(a)(2)

22. Three Stories or Less

23. Four Stories or More

24. Positive Pressure - Stairs

26. منفذ صرف المخرجExit DischargeIs that portion of a means of egress between the termination of an exit and a public way.

27. Exit discharge . . . must lead directly outside or to a street, walkway, refuge area, public way, or open space with access to the outside . . .(This area) must be large enough . . . Exit Discharge Offices Storage Exit access Discharge Exit Fabricating shop 1910.36 (c)(1) and (2)

28. 29 CFR – 1910.36General Requirements • Requirements that apply to all buildings: • Shall have exits sufficient for prompt and convenient escape of occupants in emergency. • Building structure shall not cause danger to occupants during period necessary for escape.

29. Continued 3- There shall be no locks or devices to prevent emergency egress except in specialized facilities. 4- Means of egress shall be clearly visible and understandable to occupants who are physically and mentally capable to know the direction of escape. 5- Minimum ceiling height of 7 feet, 6 inches 6- Projections from the ceiling (lights, etc.) must be at least 6 feet, 8 inches from the floor

30. Emergency exit locked

36. Continued 7- Any doorway or passageway not constituting an exit or way to occupants to reach an exit, shall be clearly marked “Not an Exit”. 8- Adequate and reliable illumination shall be provided for all exit facilities in every building or structure. 9- Signs clearly visible with the word “EXIT” in plain letters at least 6 inches high and at least a ¾” stroke width

37. Exit Marking • Each exit must be clearly visible and marked with an “Exit” sign • Each exit route door must be free of decorations or signs that obscure the visibility of the door

38. Exit routes must be marked • Each exit must be clearly visible and marked with a sign that says: 9a

40. Not an Exit

41. Exit Markings • Illuminated by a light source at least 5 foot-candles on the illuminated surface • Exit signs are not to be obscured by furnishings, decorations, etc.

42. Requirements for alarm systems • Workplaces must have operable employee alarm systems • Alarms must have distinctive signals to warn employees of fire or other emergencies 10a

43. Maintenance • Maintenance is important to prevent protective device failures or impeded travel during an emergency. • Every required exit, way of approach thereto, and way of travel from the exit into the street or open space shall be continuously maintained free of all obstructions or impediments to full instant use in the case of fire or other emergency.

44. Maintenance • Every automatic sprinkler system, fire detection and alarm system, exit lighting, fire door, and other item or equipment, where provided, shall be continuously in proper operating condition.

45. Maintenance requirements • Keep the following in proper working order: • sprinkler systems • alarm systems • fire doors • exit lighting • other safeguards to protect employees 11b

47. LESSON 2 GENERAL GUIDELINES Width and capacity of means of egress • Level egress components: 100 persons/unit (Including Class A ramps) • Inclined egress components: 60 persons/unit (Including Class B ramps)

48. Exit Routes Width and Capacity • Capacity is a measure of persons per exit width. To understand capacity, it is important to understand the term exit width. • Means of egress shall be measured in exit width units of 22 inches. • Fractions of an exit width unit shall be counted as: • Zero if the fractional unit is less than 12 inches • One-half if the fraction is greater than 12 inches and less than 22 inches.

49. Egress Capacity and Occupant Loadحمل الإشغال • When capacity has been determined for each means of egress, the projected occupant load for the means of egress must be calculated. • Capacity of means of egress shall be sufficient for occupant load of any space served.

50. Continued • Occupant Load is the maximum number of persons that may be in a space at any time. • The occupant load in any building thereof shall not be assumed to be less than the number determined by dividing the floor area assigned to that use by the occupant load factor for individual occupancies.